Waves can interfere when they overlap in space. Constructive interference occurs when wave amplitudes add, increasing the overall amplitude. Destructive interference occurs when wave amplitudes subtract, decreasing the overall amplitude. When a wave encounters a boundary, it can be reflected. The angle of reflection is equal to the angle of incidence. Refraction occurs when a wave passes from one medium to another of different density, changing the wave's direction. Standing waves occur when a traveling wave is reflected back on itself, forming areas of maximum and minimum displacement.
Waves (Grade 7, Quarter 3) Suggested Guide for DiscussionRachel Espino
A suggested powerpoint presentation guide for discussion for Gr.7 teachers on the characteristics and categories of waves. It also includes a simple quiz (under knowledge category) as an assessment
Waves (Grade 7, Quarter 3) Suggested Guide for DiscussionRachel Espino
A suggested powerpoint presentation guide for discussion for Gr.7 teachers on the characteristics and categories of waves. It also includes a simple quiz (under knowledge category) as an assessment
P1.5 Presentation.
Useful for revision for exams as it contains accurate information.
It includes:
- What are Waves
- Waves Definitions
- Energy Transfer
- Wave Speed
- Frequency & Time Period
- Light & Sound
- Reflection
- Refraction
- Diffraction
- Measuring Waves
- Oscilloscopes
- Ray Diagrams
- Using Light
- Red Shift
- The Big Bang Theory
This final presentation completes the whole of Physics (P1). This'll hopefully become part of a bigger collection of other science topics, soon to be uploaded.
Thank You. To all of you out there who may find my presentation helpful in any way, shape or form.I pleased to now be able to say the P1 Collection is now complete. Soon I'll be uploading other presentation on Physics, such as; P2 & P3 Hope you find these presentations useful and helpful for exams or just general revision. More presentation coming soon on this channel, JaskiratK.
See You Soon,
Jaskirat
Created By: JaskiratK
Uploaded By: JaskiratK
Information By: BBC Bitesize
Pictures/Images/Diagram: Google, BBC Bitesize
Slideshare: http://www.slideshare.net/JaskiratK
Prezi: https://prezi.com/user/mrnfvgaamzxe/
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
2. Wave Interference
Two different material objects can never occupy the same
space at the same time.
Because mechanical waves are not matter but rather are
displacements of matter, two waves can occupy the same
space at the same time.
The combination of two overlapping waves is called
superposition.
Superposition Principle : When two waves interfere, the
resulting displacement of the medium at any location is the
algebraic sum of the displacements of the individual waves
at that same location.
Works for both longitudinal waves and for transverse waves
3. Wave Interference
To determine the amount of interference:
Simplyalign the waves in time and add the
amplitudes
Amplitudes can be either positive (above
equilibrium) or negative (below equilibrium)
4. Wave Interference
Constructive Interference:
If the amplitudes are of the same sign, the
wave is reinforced and grows bigger
Destructive Interference:
If the amplitudes are of opposite sign, the
wave is diminished and grows smaller
6. Wave Interference
Examples:
Sound – creates beats
• Constructive = Louder sound
• Destructive = Softer or no sound
Light
• Constructive = Brighter Light; change in color
• Destructive = Dark or no light
Water
• Constructive = Larger crests
• Destructive = No visible wave
7. Wave Interference
Examples:
Interference of two circular
waves. Absolute value
The colors seen in a soap bubble or an oil film snapshots of the (real-
on water are a common example of interference. valued, scalar) wave field.
Light reflecting off the front and back surfaces of Wavelength increasing from
the thin soap film interferes, resulting in different top to bottom, distance
colors being enhanced. between wave centers
increasing from left to right.
The dark regions indicate
destructive interference.
8. Wave Reflection
Reflection-A wave will bounce off an object
Wave reflection from surfaces depends on
the characteristics of the surface
Smooth hard surfaces reflect best
Rough soft surfaces reflect poorly
Energy not reflected is absorbed or
transmitted through the material
9. Wave Reflection
Law of Reflection- A wave bounces off at
the same angle it hits. (angle measured
with respect to the normalline
Think of arrows pointing in the direction of
the wave motion
Angles Equal
10. Wave Reflection
What happens to the
motion of a wave when
it reaches a boundary?
At a free boundary,
waves are reflected.
At a fixed boundary,
waves are reflected
and inverted.
11. Wave Reflection - Sound
Echoes are produced
when sound is reflected.
An echo can only be
heard by the human ear
when the time interval
b/w the echo and the
original sound is greater
than 0.1 s and the
distance b/w the person
and the reflecting surface
is greater than 17 m.
If smaller than 17 m, then
called Reverberation.
15. Wave Refraction
If there is a change in the characteristics
of a medium, waves are bent
This occurs because different parts of the
wave front travel at different speeds
Think of a marching around a curved track
The inside people have to move more
slowly than the outside people to keep the
lines straight
19. Wave Reflection & Refraction
The combination of reflection and
refraction enables imaging
Ultrasonic medical imaging
Naval SONAR for detecting submarines
Bats catch mosquitoes
20. Standing Waves
A standing wave is produced
when a wave that is
traveling is reflected back
upon itself.
Appear to stand still
There are two main parts to
a standing wave:
Antinodes – Areas of
MAXIMUM AMPLITUDE
Nodes – Areas of ZERO
AMPLITUDE.
23. Natural Frequency
Objects have ―natural‖ frequencies
The frequency that they vibrate at when
disturbed
Based on their size and structure
Guitar strings are an example
24. Resonance
Reinforcing of an object’s natural frequency so that
the amplitude increases quickly
If you have ever been talking in a bathroom and
notice that certain notes are very loud—that’s
resonance: that loud note is the natural frequency
of that room.
Think about a swing on a playground - You go high
when you pump the swing at its natural vibration
frequency
Resonance is how a soprano can break a glass
with her voice.
25. Resonance
Tacoma Bridge
7, 1940, one of the most famous incidents
involving the collapse of a bridge occurred.
The Tacoma Narrows Bridge (formerly the
Tacoma Suspension Bridge) was a mile-long
bridge on Route 16 in Washington State. The
original bridge was built with faulty
construction which yielded a potentially
tragic situation when four months after its
completion, the bridge collapsed in the face of
what many recall as a light breeze.
Fortunately, there were no cars on the bridge
at the time of the collapse, hence no human
lives lost. A dog walking on the bridge during
the incident, did in fact lose his life as a result
of the collapse – the light breeze caused the
bridge to “resonate” until the amplitude
became to great for the infrastructure