1) Light reflects off surfaces according to the laws of reflection. The angle of incidence equals the angle of reflection and both rays lie in the same plane as the normal.
2) Spherical mirrors come in two types - concave and convex. Concave mirrors converge parallel rays to a focal point while convex mirrors diverge them, making the image appear behind the mirror.
3) Reflection by concave mirrors follows specific rules - parallel rays passing through the focal point reflect parallel to the axis, rays through the center reflect back along themselves, and oblique rays reflect at equal angles. Concave mirrors can focus light beams.
Reflection of light
Spherical mirrors
Images formation by spherical mirrors
Representation of images formed by spherical mirrors using ray diagrams
Mirror formula and magnification
Reflection of light
Spherical mirrors
Images formation by spherical mirrors
Representation of images formed by spherical mirrors using ray diagrams
Mirror formula and magnification
Class 10 Light Reflection and Refraction 1.ppsxAlphinJohnson3
Light Reflection and Refraction
This presentation has complete information about the NCERT Science Chapter 'Light - Reflection and Refraction'.
Don't forget to like if you likr it!!
Most of the times this study confused me...so, i just put some important points in one place to easily keep them in mind..hope it will help other students as well..and inform me, if a reader find anything new to improve it further.
Class 10 Light Reflection and Refraction 1.ppsxAlphinJohnson3
Light Reflection and Refraction
This presentation has complete information about the NCERT Science Chapter 'Light - Reflection and Refraction'.
Don't forget to like if you likr it!!
Most of the times this study confused me...so, i just put some important points in one place to easily keep them in mind..hope it will help other students as well..and inform me, if a reader find anything new to improve it further.
The increased availability of biomedical data, particularly in the public domain, offers the opportunity to better understand human health and to develop effective therapeutics for a wide range of unmet medical needs. However, data scientists remain stymied by the fact that data remain hard to find and to productively reuse because data and their metadata i) are wholly inaccessible, ii) are in non-standard or incompatible representations, iii) do not conform to community standards, and iv) have unclear or highly restricted terms and conditions that preclude legitimate reuse. These limitations require a rethink on data can be made machine and AI-ready - the key motivation behind the FAIR Guiding Principles. Concurrently, while recent efforts have explored the use of deep learning to fuse disparate data into predictive models for a wide range of biomedical applications, these models often fail even when the correct answer is already known, and fail to explain individual predictions in terms that data scientists can appreciate. These limitations suggest that new methods to produce practical artificial intelligence are still needed.
In this talk, I will discuss our work in (1) building an integrative knowledge infrastructure to prepare FAIR and "AI-ready" data and services along with (2) neurosymbolic AI methods to improve the quality of predictions and to generate plausible explanations. Attention is given to standards, platforms, and methods to wrangle knowledge into simple, but effective semantic and latent representations, and to make these available into standards-compliant and discoverable interfaces that can be used in model building, validation, and explanation. Our work, and those of others in the field, creates a baseline for building trustworthy and easy to deploy AI models in biomedicine.
Bio
Dr. Michel Dumontier is the Distinguished Professor of Data Science at Maastricht University, founder and executive director of the Institute of Data Science, and co-founder of the FAIR (Findable, Accessible, Interoperable and Reusable) data principles. His research explores socio-technological approaches for responsible discovery science, which includes collaborative multi-modal knowledge graphs, privacy-preserving distributed data mining, and AI methods for drug discovery and personalized medicine. His work is supported through the Dutch National Research Agenda, the Netherlands Organisation for Scientific Research, Horizon Europe, the European Open Science Cloud, the US National Institutes of Health, and a Marie-Curie Innovative Training Network. He is the editor-in-chief for the journal Data Science and is internationally recognized for his contributions in bioinformatics, biomedical informatics, and semantic technologies including ontologies and linked data.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
3. The Law of Reflection
• Law of Reflection-When a light ray
strikes a surface and is reflected
• Normal-Imaginary line that is drawn
perpendicular to the surface where the light
ray strikes.
4. The Law of Reflection
• The incident ray and the normal form an
angle called the angle of incidence.
• The reflected
light ray forms
an angle with
the normal
called the angle
of reflection.
5. The Law of Reflection
• law of reflection states that the angle of
incidence is equal to the angle of reflection.
6. Smooth Surface Reflection
• uneven reflection of light
waves from a rough surface
• Causes light waves to reflect
in all directions
Rough Surface Reflection
• Even/parallel reflection of
light waves from and even
surface
Reflection from Surfaces—
RegularVS Diffuse Reflection
7. ConcaveVS Convex Mirrors
Convex Mirror
• has a surface that curves
outward, like the back of a
spoon
• Convex mirrors cause light
waves to spread out, or
diverge.
Concave Mirror
• a surface that is curved
inward, like the bowl of a
spoon.
• Unlike plane mirrors, concave
mirrors cause light rays to
come together, or converge
8. Scattering of Light
• When diffuse reflection occurs, light waves
that were traveling in a single direction are
reflected, and then travel in many different
directions.
• This is known as scattering.
• Scattering also can occur when light waves
strike small particles, such as dust.
9. Reflection by Plane Mirrors
• These light rays
bounce off the
person according to
the law of reflection,
and some of them
strike the mirror.
Reflection and Mirrors
2
• Light waves from the Sun or another source
of light strike each
part of the person.
10. Reflection by Plane Mirrors
Reflection and Mirrors
2
• The rays that strike
the mirror also are
reflected according
to the law of
reflection.
11. The Image in a Plane Mirror
• Although the light rays bounced off the
mirror’s surface, your brain interprets
them as having followed straight lines.
• This makes the
reflected light
rays look as if
they are coming
from behind the
mirror.
Reflection and Mirrors
2
12. 2a) Reflection of light :-
When light falls on a highly polished surface like a mirror most of
the light is sent back into the same medium. This process is called
reflection of light.
a) Laws of reflection of light :-
i) The angle of incidence is equal to the angle of reflection.
ii) The incident ray, the reflected ray and the normal to the mirror at
the point of incidence all lie in the same plane.
13. i) The image is erect.
ii) The image is same size as the object.
iii) The image is at the same distance from the mirror as the object is in
front of it.
iv) The image is virtual (cannot be obtained on a screen).
v) The image is laterally inverted.
14. 3) Spherical mirrors :-
Spherical mirror is a curved mirror which is a part of a hollow
sphere. Spherical mirrors are of two types. They are concave mirror
and convex mirror.
i) Concave mirror :- is a spherical mirror whose reflecting surface is
curved inwards. Rays of light parallel to the principal axis after
reflection from a concave mirror meet at a point (converge) on the
principal axis.
ii) Convex mirror :- is a spherical mirror whose reflecting surface is
curved inwards. Rays of light parallel to the principal axis after
reflection from a convex mirror get diverged and appear to come from a
point behind the mirror.
F
F
15. 4) Terms used in the study of spherical mirrors :-
i) Center of curvature :- is the centre of the sphere of which the mirror
is a part (C).
ii) Radius of curvature :- is the radius of the sphere of which the mirror
is a part (CP).
iii) Pole :- is the centre of the spherical mirror (P).
iv) Principal axis :- is the straight line passing through the centre of
curvature and the pole (X-Y).
v) Principal focus :-
In a concave mirror, rays of light parallel to the principal axis after
reflection meet at a point on the principal axis called principal
focus(F).
In a convex mirror, rays of light parallel to the principal axis after
reflection get diverged and appear to come from a point on the
principal axis behind the mirror called principal focus (F).
vi) Focal length :- is the distance between the pole and principal focus
(f). In a spherical mirror the radius of curvature is twice the focal
length.
R = 2f or f = R
2
16. X C F P Y
C – centre of curvature CP – radius of curvature
P – pole XY – principal axis
F – principal focus PF – focal length
17. 5) Reflection by spherical mirrors :-
i) In a concave mirror a ray of light parallel to the principal
axis after reflection passes through the focus.
In a convex mirror a ray of light parallel to the principal
axis after reflection appears to diverge from the focus.
C F P P F C
18. ii) In a concave mirror a ray of light passing through the
focus after reflection goes parallel to the principal axis.
In a convex mirror a ray of light directed towards the
focus after reflection goes parallel to the principal axis.
C F P P F C
19. iii) In a concave mirror a ray of light passing through the
centre of curvature after reflection is reflected back along
the same direction.
In a convex mirror a ray of light directed towards the
centre of curvature after reflection is reflected back along
the same direction.
C F P P F C
20. iv) In a concave or a convex mirror a ray of light directed
obliquely at the pole is reflected obliquely making equal
angles with the principal axis.
C F i P i P F C
r r
21.
22. Concave Mirrors
• A straight line drawn perpendicular to the
center of a concave or convex mirror is
called the optical axis.
• Light rays that travel parallel to the optical
axis and strike the mirror are reflected so
that they pass through a single point of the
optical axis called the focal point.
Reflection and Mirrors
2
• The distance along the optical axis from the
center of the mirror to the focal point is
called the focal length.
23. Concave Mirrors
• If the object is farther from the mirror than
the focal point, the image appears to be
upside down, or inverted.
• The size of the image decreases as the object
is moved farther away from the mirror.
Reflection and Mirrors
2
• If the object is closer to the mirror than
one focal length, the image is upright and
gets smaller as the object moves closer to
the mirror.
24. Concave Mirrors
• A concave mirror can
produce a focused beam of
light if a source of light is
placed at the mirror’s focal
point.
• Flashlights and automobile
headlights use concave
mirrors to produce directed
beams of light.
Reflection and Mirrors
2
25. Convex Mirrors
• A convex mirror causes light rays to spread
apart, or diverge.
Reflection and Mirrors
2
26. Convex Mirrors
Reflection and Mirrors
2
• Like the image formed by a plane mirror, the
image formed by a convex mirror seems to
be behind the mirror. The image always
is upright
and smaller
than the
object.