Muscles
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(1) Astronauts have trouble standing and walking when they return to Earth because their muscles have weakened in the low-gravity environment of space. (2) Without gravity, astronauts use their muscles less, causing their muscles to thin (atrophy) over time. (3) Two experiments showed that people weigh less when lying down compared to standing up, demonstrating how gravity affects muscle usage and strength.
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The document summarizes an experiment conducted by Belgian and French students to understand why astronauts have trouble standing and walking when they return to Earth. The students measured their own weight while standing and then lying down to push against a vertical scale with their legs. They found their weight was lower when lying down due to gravity pulling less on their muscles in that position. The conclusion is that in space, astronauts' muscles don't need to work as hard against gravity and become weak, so when back on Earth they have trouble standing and walking until their muscles re-adapt to Earth's stronger gravity.
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This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, joint mobility, and stretching. It also details the student's performance in track and field events like the 800m, 1500m, and throwing events. Further worksheets provide results from jumping events and sprint times for the 200m, 100m, and 50m. The documents record the student's personal best times and marks.
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1) The document summarizes a biology experiment about balance and space sickness conducted by students in Belgium and Italy.
2) The experiments involved spinning participants and then having them try to stand or walk in a straight line. The Belgian students found it was difficult but not impossible to stand straight after spinning with eyes open or closed.
3) The Italian students observed that one participant stumbled a little after spinning with eyes closed but was able to walk straight after opening his eyes. He felt nausea when spinning with head tilted and eyes closed.
4) Both groups concluded that space sickness occurs because of a mismatch between what the eyes see and what the inner ear senses, as the body searches for a way to adapt to the
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The document discusses the origins and development of the scientific method. It notes that Aristotle made observations and conclusions without testing his ideas experimentally. Galileo is considered the first true scientist because he tested Aristotle's idea that heavier objects fall faster by dropping balls of different weights from the same height, discovering they hit the ground at the same time. This showed the importance of experimentation over just thinking about ideas. The document then defines key aspects of experiments like variables and controls.
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Back Safety
The document discusses back safety and injury prevention. It provides statistics on back injuries, explains common causes like poor posture and lifting techniques, and recommends ways to prevent injuries through proper lifting techniques, conditioning exercises, and ergonomic practices. The document emphasizes using safe lifting practices like getting close to loads and lifting with the legs rather than the back to reduce back strain and injury risks.
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The document summarizes an experiment conducted by Belgian and French students to understand why astronauts have trouble standing and walking when they return to Earth. The students measured their own weight while standing and then lying down to push against a vertical scale with their legs. They found their weight was lower when lying down due to gravity pulling less on their muscles in that position. The conclusion is that in space, astronauts' muscles don't need to work as hard against gravity and become weak, so when back on Earth they have trouble standing and walking until their muscles re-adapt to Earth's stronger gravity.
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This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, joint mobility, and stretching. It also details the student's performance in track and field events like the 800m, 1500m, and throwing events. Further worksheets provide results from jumping events and sprint times for the 200m, 100m, and 50m. The documents record the student's personal best times and marks.
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3) The Italian students observed that one participant stumbled a little after spinning with eyes closed but was able to walk straight after opening his eyes. He felt nausea when spinning with head tilted and eyes closed.
4) Both groups concluded that space sickness occurs because of a mismatch between what the eyes see and what the inner ear senses, as the body searches for a way to adapt to the
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This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, stretching, and joint mobility. It also lists specific exercises that target different muscle groups. Additional worksheets track students' performance in track and field events like the 800m, 1500m, 200m, 100m, and 50m runs as well as throwing and jumping events. Times and distances are recorded for each attempt.
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eTwinning biology muscles 3WETc
1) The document describes an experiment measuring muscle force standing up versus lying down. Students measured their weight standing and then pushing against a wall-mounted scale while lying on their backs.
2) The results showed students could exert less force on the scale when lying down compared to standing. One student pushed with 7kg of force lying down versus 55kg standing.
3) The conclusion is that it is more difficult to exert force while lying down due to muscles being used less in that position. The explanation discusses how astronauts' muscles atrophy in space due to less gravity usage.
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2) Their results showed that body length increased slightly when lying down compared to standing up, with the percentage difference in length being lower for students with higher mass.
3) Comparing their results to those of students in Italy, they found that the percentage difference in body length was generally lower for students with higher mass, and that lying down makes one "taller" due to the effects of gravity.
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This document describes an experiment about how astronauts have trouble standing and walking when they return to Earth from space. The experiment involves measuring a person's mass when standing and lying down to show that muscles are needed to apply force against gravity. When astronauts spend time in space's microgravity, their muscles weaken from disuse and have trouble supporting their body weight on Earth, causing them to collapse initially until their muscles regain strength.
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The presentation drafts some of the basic variations of a squat which can be trained productively and efficiently by a Physiotherapist, A Trainer or a Coach.
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The document summarizes an experiment conducted by students in Belgium and Italy to understand why astronauts experience space sickness, also known as space adaptation syndrome. The students in each country performed experiments spinning themselves and then trying to walk or stand in various conditions with their eyes open or closed. Both groups found it was difficult to balance after spinning. The Belgian students concluded that space sickness occurs because the balance system and eyes provide different signals to the brain. The Italian students concluded that the body experiences nausea to find a way to improve its condition and throw up any potential poisons.
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The document discusses the lunge exercise and how to perform it. It describes the lunge as an exercise that strengthens the quadriceps, glutes, and hamstrings. It can be performed with a barbell, dumbbells, or cables. The document provides instructions for performing the lunge, including standing with feet shoulder-width apart, taking a step forward and lowering into a lunge position until the front knee forms a 90-degree angle, then pushing back to the starting position.
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The document provides guidelines for proper lifting technique to avoid injury. It recommends checking that the load is not too heavy, warming up muscles first, keeping feet shoulder-width apart with one foot ahead of the load for balance. When lifting, bend the knees and keep the back straight using leg muscles rather than the back. Maintain a firm grip, keep the load close to the body, and move feet rather than twisting when changing direction. Lower the load slowly using leg muscles while keeping it close, and push loads onto shelves rather than lifting them overhead.
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The document discusses how to diversify exercise routines by expanding one's exercise menu. It recommends thinking in terms of full-body movements and categories like upper body pushes and pulls, lower body squats and bends, and total body combinations. It provides examples of basic full-body, upper body, and lower body exercises that can be varied by changing factors like stance, grip, equipment, or limb involvement to prevent boredom and keep the body challenged.
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Kyle Netter is a physical therapist with 18 years of experience who provides guidance on proper lifting techniques and back injury prevention. Micro trauma from minor injuries to joints and muscles can accumulate over time and be the underlying cause of many back injuries. Improper lifting techniques can lead to low job performance, job dissatisfaction, reduced career longevity, lost work time, and a lowered quality of life. Kyle provides examples of proper lifting techniques which include starting in the best position, keeping your back straight, using your strong leg muscles to do the lifting, squatting instead of kneeling, letting your legs do the work of lifting and avoiding twisting motions.
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This document contains worksheets from a physical education class focusing on athletics. It includes exercises for warm up, stretching, and joint mobility. It also lists specific exercises that target different muscle groups. Additional worksheets track students' performance in track and field events like the 800m, 1500m, 200m, 100m, and 50m runs as well as throwing and jumping events. Times and distances are recorded for each attempt.
Multi Planar Training
This document discusses the importance of multi-planar training by addressing all three planes of movement: sagittal, frontal, and transverse. It provides examples of exercises that target each plane as well as circuits and progressions to incorporate multi-planar movements, especially important for the transverse plane which sees much sport movement but is often neglected. Plyometric training is also covered, emphasizing proper progression and technique to reduce injury risk while training multi-directional jumps and hops.
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This document outlines the warm-up, fundamental skills, and cool-down exercises for Arnis training. The warm-up includes jogging, shuffling, kicking exercises. Fundamental Arnis skills taught are proper grip, basic stance, salutation, fighting stance, forward stance, and backward stance. Cool-down involves static stretching of the wrists, fingers, overhead, chest, triceps, elbows, and back. Participants are instructed to practice these warm-up, skills, and cool-down exercises in groups.
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2) The results showed students could exert less force on the scale when lying down compared to standing. One student pushed with 7kg of force lying down versus 55kg standing.
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Tension
Soreness
Headaches
Back pain
Fatigue
Bad posture can also diminish our breathing capacity by as much as 30%.
Law of Inertia and Running Starts
1. The document discusses frames of reference and how an object's motion depends on the chosen reference frame.
2. It gives examples of how the speed of a ball shot from a toy cannon on a moving skateboard or train depends on whether it is measured relative to the moving object or a stationary observer.
3. Key ideas are that an object can have different speeds depending on the reference frame used, and its total velocity is the sum of speeds relative to different frames of reference.
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Which Posture Are You Presentation M Oolderversions
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Pp udl inroduction
- Universal design (UD) in architecture aims to make buildings and environments accessible to all by removing barriers rather than designing for the average user.
- UDL applies these UD principles to education by ensuring the learning environment (curriculum, materials, teaching) is accessible and beneficial to all students by considering diversity from the start of lesson planning rather than retrofitting afterwards.
- The UDL Guidelines provide a framework to help apply the three UDL principles of engagement, representation, and action and expression to educational practice through multiple means of representation, engagement, and expression.
Slope c
1. Students measured the weight of objects on horizontal surfaces and on slopes of varying degrees of inclination using kitchen and person balances.
2. They found that as the inclination of the slope increased, the measured weight decreased, with steeper slopes showing smaller weights.
3. The conclusion is that placing an object on a sloped surface decreases the measured weight, and weight decreases more with increased slope inclination as the force of gravity has more of a parallel component to the slope.
Spacesuit c
Two groups of students, one in Italy and one in Belgium, conducted experiments with space suits and aluminum foil. They tested how aluminum foil affects electromagnetic signals by calling phones with and without foil. They also dropped balls on surfaces with and without aluminum protection to see how foil reduces impact. The results showed that aluminum foil can stop electromagnetic radiation and lessen the size and depth of impacts when enough layers are used.
Elevator c
An experiment was conducted with people standing on a scale in an elevator to measure changes in weight as the elevator moved up and down. When the elevator went up, participants' weight increased, and when it went down, their weight decreased. This is because as the elevator moves up, it pushes the person up, increasing the force they exert on the scale, while moving down does not provide that additional pushing force, so the measured weight is less.
Magnet ab
1) The document describes an experiment to investigate how the weight of a magnet changes when another magnet is brought near it.
2) When the magnets attract each other, the weight of the lower magnet decreases, and when they repel each other, the weight increases.
3) The Belgian and Italian schools that performed the experiment found similar results, though they used different distances.
Buoyancy c
1. The experiment measured how the buoyant force of different liquids affected the weight of objects by submerging a cube and nuts in distilled water, salt water, and oil and measuring the resultant force.
2. The results showed that the resultant force was always smaller than gravity, with salt water producing the greatest reduction in weight.
3. This demonstrated that salt water best simulates the lower gravity conditions on Mars out of the three liquids, as it most reduced the apparent weight of the objects.
Generating gravity ab
This document summarizes a student experiment to simulate gravity on a spacecraft. The experiment involved spinning glass tubes with attached masses to measure the time taken to make 10 revolutions. Heavier masses took less time to complete 10 revolutions than lighter masses. The results supported the theory that centrifugal force from spinning a spacecraft can generate artificial gravity for astronauts by pushing them towards the outer hull. The document also explained how circular motion and centripetal acceleration relate to creating gravity in space.
Elevator ab
1) Students conducted an experiment to measure changes in weight when riding in an elevator.
2) They used a balance, elevator, camera, and chronometer to record weight while the elevator moved up and down.
3) The results showed that weight increased when the elevator moved down due to gravitational acceleration, and weight decreased when moving up due to deceleration.
Astronauts suit ab
The document summarizes two experiments conducted by Belgian and Italian students to test whether aluminum can protect astronauts from solar radiation and micrometeorites.
The first experiment tested whether aluminum foil could block electromagnetic waves by making phone calls to phones with and without aluminum wrapping. The second experiment dropped balls made of different materials into containers of sand with and without overlying aluminum foil to compare impact sizes.
Both groups found that aluminum blocked electromagnetic waves like solar radiation. They agreed aluminum reduced impact size but the Italians concluded it could fully protect against micrometeorites while the Belgians weren't certain it provided full protection.
Slope ab
Two groups of students - one from Belgium and one from Italy - conducted an experiment to measure the effect of slope on measured weight. They used kitchen scales and a balance scale to measure the weight of objects and people on slopes of varying angles. Both groups found that measured weight decreased with increased slope steepness. However, the Italian group found a greater change in measured weight over different slopes compared to the Belgian group, indicating the slopes in the Italian school were generally steeper.
Magnet on balance c
The students conducted an experiment to determine how the weight of a magnet is affected when another magnet is held above it. They found that if two magnets of the same polarity are held above each other, they repel and the weight increases, while if two magnets of opposite polarity are held above each other, they attract and the weight decreases. The results were the same in both Belgium and Italy because they can be explained by the Law of Universal Gravitation.
Generating gravity c
- Students conducted an experiment to investigate how to generate artificial gravity by spinning a spacecraft. They measured how the time it took to spin rubber caps attached to different masses changed when the mass or spin velocity was altered.
- The Belgian group found that heavier masses required faster spin speeds to remain attached to the rubber caps. The Italian group found that increasing the spin velocity allowed heavier masses to be elevated and that larger spin radii required lighter masses to remain attached.
- The experiment demonstrated that artificial gravity can be generated on a spacecraft by spinning and that both spin speed and radius impact the amount of gravity generated.
Buoyancy ab
The document describes an experiment to measure the effect of different liquids on the apparent weight of objects. Cubes and nuts were measured in distilled water, salt water, and oil. The results showed weight decreased most in oil due to its lower density, similar to how gravity is lower on Mars. While results matched theory, some differences occurred in practice between salt water and oil. The pulling up force from liquids causes apparent weight to decrease as buoyancy increases.
Summary physics
This document discusses several physics experiments related to weight and gravity. It describes experiments to determine how weight is affected by an elevator's movement, slope, nearby magnets, and different liquid environments. The document also explores how centrifugal force from a spinning mass can generate gravity and how aluminum foil can block electromagnetic signals and reduce impact. Key conclusions are that weight increases in an upward elevator, decreases on slopes and near attracting magnets, and is lowest in salt water due to buoyancy.
Buoyancy italy
This physics experiment tested how buoyancy changes with different liquids using a force sensor to measure the weight of objects submerged in distilled water, salt water, and oil. The experiment measured the weight of a cube and nuts in air and then in each liquid. As the density of the liquid increased from distilled water to salt water to oil, the measured weight of the submerged objects decreased, showing that buoyancy increases with the density of the surrounding liquid.
Question 5 group 12
1) The document discusses Newton's third law of motion and how it applies to Brand escaping the black hole in the movie Interstellar.
2) It explains that Cooper detaches his ship, applying a force, which by Newton's third law pushes Brand's ship in the opposite direction, allowing her to escape in a slingshot motion.
3) However, the third law requires equal and opposite forces, and escaping the black hole's strong gravity would require a large force from fuel, which they had already used up. Therefore, the third law alone could not be used to escape the black hole without an additional energy source like fuel.
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快速办理(UAM毕业证书)马德里自治大学毕业证学位证一模一样
学校原件一模一样【微信：741003700 】《(UAM毕业证书)马德里自治大学毕业证学位证》【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
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◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
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◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Summary Of transcription and Translation.pdf
Hello Everyone Here We are Sharing You with The process of protien Synthesis in very short points you will be Able to understand It Very well
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.CLASS 12th CHEMISTRY SOLID STATE ppt (Animated)
Description:
Dive into the fascinating realm of solid-state physics with our meticulously crafted online PowerPoint presentation. This immersive educational resource offers a comprehensive exploration of the fundamental concepts, theories, and applications within the realm of solid-state physics.
From crystalline structures to semiconductor devices, this presentation delves into the intricate principles governing the behavior of solids, providing clear explanations and illustrative examples to enhance understanding. Whether you're a student delving into the subject for the first time or a seasoned researcher seeking to deepen your knowledge, our presentation offers valuable insights and in-depth analyses to cater to various levels of expertise.
Key topics covered include:
Crystal Structures: Unravel the mysteries of crystalline arrangements and their significance in determining material properties.
Band Theory: Explore the electronic band structure of solids and understand how it influences their conductive properties.
Semiconductor Physics: Delve into the behavior of semiconductors, including doping, carrier transport, and device applications.
Magnetic Properties: Investigate the magnetic behavior of solids, including ferromagnetism, antiferromagnetism, and ferrimagnetism.
Optical Properties: Examine the interaction of light with solids, including absorption, reflection, and transmission phenomena.
With visually engaging slides, informative content, and interactive elements, our online PowerPoint presentation serves as a valuable resource for students, educators, and enthusiasts alike, facilitating a deeper understanding of the captivating world of solid-state physics. Explore the intricacies of solid-state materials and unlock the secrets behind their remarkable properties with our comprehensive presentation.
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
We present the JWST discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS
+
53.13485
−
27.82088
with a host spectroscopic redshift of
2.903
±
0.007
. The transient was identified in deep James Webb Space Telescope (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic followup with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red (
�
(
�
−
�
)
∼
0.9
) despite a host galaxy with low-extinction and has a high Ca II velocity (
19
,
000
±
2
,
000
km/s) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low-
�
Ca-rich population. Although such an object is too red for any low-
�
cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (
≲
1
�
) with
Λ
CDM. Therefore unlike low-
�
Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high-
�
truly diverge from their low-
�
counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
Current descriptions of immersive learning cases are often difficult or impossible to compare. This is due to a myriad of different options on what details to include, which aspects are relevant, and on the descriptive approaches employed. Also, these aspects often combine very specific details with more general guidelines or indicate intents and rationales without clarifying their implementation. In this paper we provide a method to describe immersive learning cases that is structured to enable comparisons, yet flexible enough to allow researchers and practitioners to decide which aspects to include. This method leverages a taxonomy that classifies educational aspects at three levels (uses, practices, and strategies) and then utilizes two frameworks, the Immersive Learning Brain and the Immersion Cube, to enable a structured description and interpretation of immersive learning cases. The method is then demonstrated on a published immersive learning case on training for wind turbine maintenance using virtual reality. Applying the method results in a structured artifact, the Immersive Learning Case Sheet, that tags the case with its proximal uses, practices, and strategies, and refines the free text case description to ensure that matching details are included. This contribution is thus a case description method in support of future comparative research of immersive learning cases. We then discuss how the resulting description and interpretation can be leveraged to change immersion learning cases, by enriching them (considering low-effort changes or additions) or innovating (exploring more challenging avenues of transformation). The method holds significant promise to support better-grounded research in immersive learning.
Direct Seeded Rice - Climate Smart Agriculture
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ESA/ACT Science Coffee: Diego Blas - Gravitational wave detection with orbita...
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Speaker: Diego Blas (IFAE/ICREA)
Title: Gravitational wave detection with orbital motion of Moon and artificial
Abstract:
In this talk I will describe some recent ideas to find gravitational waves from supermassive black holes or of primordial origin by studying their secular effect on the orbital motion of the Moon or satellites that are laser ranged.Compexometric titration/Chelatorphy titration/chelating titration
Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
The cost of acquiring information by natural selection
This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome.
It's based on the first part of this research paper:
The cost of information acquisition by natural selection
Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom
bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
Signatures of wave erosion in Titan’s coasts
The shorelines of Titan’s hydrocarbon seas trace flooded erosional landforms such as river valleys; however, it isunclear whether coastal erosion has subsequently altered these shorelines. Spacecraft observations and theo-retical models suggest that wind may cause waves to form on Titan’s seas, potentially driving coastal erosion,but the observational evidence of waves is indirect, and the processes affecting shoreline evolution on Titanremain unknown. No widely accepted framework exists for using shoreline morphology to quantitatively dis-cern coastal erosion mechanisms, even on Earth, where the dominant mechanisms are known. We combinelandscape evolution models with measurements of shoreline shape on Earth to characterize how differentcoastal erosion mechanisms affect shoreline morphology. Applying this framework to Titan, we find that theshorelines of Titan’s seas are most consistent with flooded landscapes that subsequently have been eroded bywaves, rather than a uniform erosional process or no coastal erosion, particularly if wave growth saturates atfetch lengths of tens of kilometers.
Alternate Wetting and Drying - Climate Smart Agriculture
Alternate Wetting and Drying - Climate Smart AgricultureInternational Food Policy Research Institute- South Asia Office
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Class 10 human eye notes physics
Handwritten best quality
SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆
Context. The early-type galaxy SDSS J133519.91+072807.4 (hereafter SDSS1335+0728), which had exhibited no prior optical variations during the preceding two decades, began showing significant nuclear variability in the Zwicky Transient Facility (ZTF) alert stream from December 2019 (as ZTF19acnskyy). This variability behaviour, coupled with the host-galaxy properties, suggests that SDSS1335+0728 hosts a ∼ 106M⊙ black hole (BH) that is currently in the process of ‘turning on’. Aims. We present a multi-wavelength photometric analysis and spectroscopic follow-up performed with the aim of better understanding the origin of the nuclear variations detected in SDSS1335+0728. Methods. We used archival photometry (from WISE, 2MASS, SDSS, GALEX, eROSITA) and spectroscopic data (from SDSS and LAMOST) to study the state of SDSS1335+0728 prior to December 2019, and new observations from Swift, SOAR/Goodman, VLT/X-shooter, and Keck/LRIS taken after its turn-on to characterise its current state. We analysed the variability of SDSS1335+0728 in the X-ray/UV/optical/mid-infrared range, modelled its spectral energy distribution prior to and after December 2019, and studied the evolution of its UV/optical spectra. Results. From our multi-wavelength photometric analysis, we find that: (a) since 2021, the UV flux (from Swift/UVOT observations) is four times brighter than the flux reported by GALEX in 2004; (b) since June 2022, the mid-infrared flux has risen more than two times, and the W1−W2 WISE colour has become redder; and (c) since February 2024, the source has begun showing X-ray emission. From our spectroscopic follow-up, we see that (i) the narrow emission line ratios are now consistent with a more energetic ionising continuum; (ii) broad emission lines are not detected; and (iii) the [OIII] line increased its flux ∼ 3.6 years after the first ZTF alert, which implies a relatively compact narrow-line-emitting region. Conclusions. We conclude that the variations observed in SDSS1335+0728 could be either explained by a ∼ 106M⊙ AGN that is just turning on or by an exotic tidal disruption event (TDE). If the former is true, SDSS1335+0728 is one of the strongest cases of an AGNobserved in the process of activating. If the latter were found to be the case, it would correspond to the longest and faintest TDE ever observed (or another class of still unknown nuclear transient). Future observations of SDSS1335+0728 are crucial to further understand its behaviour. Key words. galaxies: active– accretion, accretion discs– galaxies: individual: SDSS J133519.91+072807.4
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(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
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Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...
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Describing and Interpreting an Immersive Learning Case with the Immersion Cub...
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Compexometric titration/Chelatorphy titration/chelating titration
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The cost of acquiring information by natural selection
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Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
Alternate Wetting and Drying - Climate Smart Agriculture
Alternate Wetting and Drying - Climate Smart Agriculture
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
HUMAN EYE By-R.M Class 10 phy best digital notes.pdf
SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆
SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆
Muscles
- 1. Biology Effects of weightlessness on the muscles
- 2. participants Belgium France Julie Vanthournout Jakob Vermeulen Imen Talsi Dahmane Carla Terraillon
- 3. When astronauts arrive back on earth they have trouble standing up and walking. Why? The human muscle gets thinner since there’s no effort made because of the absence of gravity and so we lose weight.
- 4. Hypothesis During their stay in space astronauts have to use their muscles less/more cause there's is less/more gravity. This causes atrophy of the muscles. When they arrive back on Earth the amount of muscles is so small they can't stand up or walk very well.
- 5. Protocol Belgium Measure your weight standing up straight on a scale. Put the scale vertical against the wall. Lie down on your back with your feet against the scale. Push your legs against the scale. What's your weight now? Describe the difference (you feel) in your leggs standing up or lying down.
- 6. Protocol France Measure your weight Lie on the skateboard Put pressure on the balance still lying on the skateboard Take note of the weight marked on the scale
- 7. Materials Belgium 1. Scale France 1. Scale 2. Skateboard
- 8. The results standing up The weight is 72kg
- 9. The resluts lying down The weight is 5kg
- 10. The Results explanation When you stand up the gravity is pulling you down and the muscles of your legs are working and that makes you weight more. When you laying down these muscles you don't need so much because the gravity pulls to whole your body and not allone to your legs.
- 11. The results France Our weight is 2 times see 3 times lighter than our initial weight when we put pressure on the scale while lying on the skateboard.
- 12. conclusion In the space there is less gravity than on earth. So the muscles become atrophy. The gravity makes the bones strong, when there is no gravity your bones become less strong. When astronauts get back on earth they need there muscles but the muscles aren't strong enough so that's why it's hard for astronauts to arrive back on earth.
- 13. reflection Did you expect this answer? Yes, because there is no gravity in space that is pulling you down. Compare your results with the results in the other school. Did you make the same conclusion? We had the same conclusion.