5.6M
XI凸透镜成像（抽象版）
#物理 #猫咪 #可爱 #萌宠 #cat #catlover #catlife #catlovers #貓 #cats #catvideos
@ximu_cat
#Define Refraction
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25.9M
PHReflection and refraction of light. Basics of geometrical optics #physicist #physik #physique #optics #lens #reflection #refraction #nyc #washington #california #colorado #mit #school #europe #student #illustration @physclubuz
@physclubuz
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CLOBJECTIVE REFRACTION – RETINOSCOPY👁️
👉🏻 Retinoscopy is an important clinical technique used to determine a patient’s refractive error without relying on patient responses.
👉🏻 In this post, I’ve explained:
✔ Principle of retinoscopy
✔ Types of reflex (with-motion / against-motion)
✔ Neutralization concept
✔ Importance in detecting myopia, hyperopia & astigmatism
📌 A fundamental skill in optometry and ophthalmic examinations.
💾 Save this post for revision
🔁 Share with your classmates
❤️ Follow @clari_vision for more optometry notes & eye health content
📩 DM for lectures, notes & presentation
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#clarivision #optometry #medical #ophthalmology #retinoscopy
@clari_vision
173
PH🌈 Refraction of Light
Refraction of light is the bending of light when it passes from one medium to another due to a change in its speed.
📌 Definition
Refraction is the change in direction of light when it travels from one transparent medium to another (like air to water).
🔬 Why Does Refraction Happen?
Light changes speed in different materials:
Fast in air
Slower in water
Even slower in glass
When speed changes → direction changes → light bends.
📏 Laws of Refraction (Snell’s Law)
The incident ray, refracted ray, and normal all lie in the same plane.
This constant is called the refractive index.
📊 Refractive Index (n)
Higher refractive index → more bending.
🌊 Example
A pencil placed in water appears bent.
A swimming pool looks shallower than it really is.
🔁 Types of Refraction
Towards the normal → When light enters a denser medium (air → glass).
Away from the normal → When light enters a rarer medium (glass → air).
#refractionoflight #refraction #snellslaw #refractiveindex #physicsvibespk
@physicsvibespk
3.1M
ABWhen light bends, science begins! 💡
Refraction isn’t just a trick - it’s the reason we see rainbows, bent pencils in water, and the magic of lenses.
Swipe into the world where light changes direction and minds light up!
Credits: Storywise
#ScienceMadeSimple #RefractionMagic #PhysicsInMotion #BendingLight #OpticsExplained #MindBendingScience #ScienceReel #LearnWithFun #ViralScience #ReelScience #AbstractKnowledge #StudentReels #ExploreWithLight #STEMReels #IGScience
@abstractknowledge_bhawnaarora
70.7K
INBreaking down refraction basics for all my fellow eye care learners! Whether you’re an Optometry student or an Ophthalmology resident, here’s your 101 guide to mastering the art of the refraction!
By @interesting_retinal_cases
#optometry #ophthalmology #optometrist #ophthalmologist #oftalmologia #optometrystudent #oftalmologista #optometria #refraction #optician
@interesting_retinal_cases
120.9K
ASHow Normal, Hypermetropic & Myopic Eyes Focus Far and Near Objects
#physics #light #reflection #refraction #cbse #icse #convex #concave #hypermetropia #myopia #longsightedness #shortsightedness #refractionerrors
Long-sightedness (Hyperopia): Near objects appear blurred because the image forms behind the retina.
Short-sightedness (Myopia): Distant objects appear blurred because the image forms in front of the retina.
@asifkhanmd27
36.2K
RADay 254/365 of sharing my teaching practices Topic : Introducing Reflection and Refraction in ray optics . a green laser through a cylindrical cold drink bottle (filled with water + few drops of Dettol for scattering) and incense smoke on top shows the hidden path of light 🌫️
( In single medium → light travels in straight line )
( At boundary → two things happen together )
{ Reflection → part of light bounces back }
{ Refraction → part of light bends and enters new medium }
And the most magical part → you can actually see both at once. In the demo , light
[Physics,VisiblePhysics,LightMagic, school , stem , reflection , refraction] #teachingideas #teachersofinstagram #learnwithmr #physics #jee #neet #school #reels #trending #reelkarofeelkaro #stem #learningbydoing #activity
@rathimukul
886
SM🚨 STOP! 90% Students Draw These Diagrams WRONG! 😳👁️
Convex? Concave? Mirror? Lens?
Let’s fix ALL in 30 seconds! 🔥
💾 SAVE before board exams
📤 SHARE with Class 10 friends
❤️ Like if diagrams feel easy now
You don’t need fear.
You need clarity. 🔥
#reflection #refraction #raydiagrams #class10science #cbse
@smartlearninghub__
6.0M
OLLight rays refract when they traverse through different transparent mediums, bending due to changes in speed when moving through different optical densities. If you've ever went swimming, you would've noticed that a person's lower torso that is submerged in water always seems shorter! Well its because of refraction.🔦💡⤵️
Notably, when light passes from a denser to a less dense medium, it refracts away from the normal, and this happens as long as the angle of incidence is less than the critical angle. In this video, the critical angle of the glass block is 41.8°, given that the refractive index of the glass block is 1.5
n = sin r / sin i
(in this case, the angle of refraction (90°) > angle of incidence, so r is placed on top. sin90 = 1)
n = 1 / sin C
n is the refractive index
C is the critical angle
Total internal reflection occurs under specific conditions when the angle of incidence is more than the critical angle🪞🪞🔦
This principle is critical in applications such as fiber optic communication (in wifi systems) and checking the authenticity of gemstones (whether a diamond is real or not).📶📶💎💍💍
Video credit: https://youtu.be/NAaHPRsveJk?si=D83Sakk7_aBdU1-2
#light #physics #sciencesimplified #science #singapore #learninginprogress #cool #refraction
#refection #bedok #ongandlow
@olsciencehub
9.5M
SChow different types of mirrors interact with a beam of parallel light rays, demonstrating their distinct reflective properties. Plane Mirror: A plane mirror has a flat reflecting surface. When parallel light rays strike it, they reflect in a parallel manner, following the laws of reflection (angle of incidence equals angle of reflection at each point). This results in a virtual, upright image of the same size as the object. Concave Mirror: A concave mirror curves inward, like the inside of a spoon, and is also called a converging mirror. It focuses the parallel light rays to a single point called the principal focus after reflection. This property is used in applications like solar furnaces and car headlights to concentrate light. Convex Mirror: A convex mirror bulges outward, and is known as a diverging mirror. It causes the parallel light rays to spread out or diverge after reflection. The reflected rays appear to originate from a virtual focal point behind the mirror. This wide field of view makes them ideal for use as rear-view mirrors in vehicles and for security purposes.source ›@explainingscience_
@sciencex_pedia
5.9M
SCA ray changes its direction when it goes from one refractive index media to another refractive index medium in order to take the shortest path across a system. Whenever a light ray is bounced back by some angle across a barrier along its course.
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#physics #facts #science
@scienceindies
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