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Graduate Why doesn't a 100W laser produce recoil like a 100W water hose?

  • meemoe_uk
  • · Replies 15 ·
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15

Undergrad Source of light in Michelson-Morley experiment

  • nikolafmf
  • · Replies 6 ·
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6

High School Why don't clouds refract light?

  • Frank-95
  • · Replies 15 ·
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15

Graduate Is polar coordinate system non inertial?

  • Soren4
  • · Replies 7 ·
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7

Undergrad Why does cladding with lower refractive index prevent light loss in fiber optics?

  • Gajan1234
  • · Replies 1 ·
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1

Graduate Calculating copper mirror thickness for 41% reflectance at 1521nm

  • Ngineer
  • · Replies 4 ·
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4

Undergrad Why Does CFL Lighting Cause a Violet Line in Laundry Detergent?

  • JFS321
  • · Replies 2 ·
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2

Undergrad Refraction, wavelength and frequency

  • Gajan1234
  • · Replies 11 ·
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11

High School Why Does Snell's Law Give Incorrect Results When Using Certain Formulas?

  • Gajan1234
  • · Replies 3 ·
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3

Graduate How much detail can reflected light encode about an object?

  • DavidReishi
  • · Replies 63 ·
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63

Undergrad Do we use optics in other branches of physics ?

  • Peter25samaha
  • · Replies 2 ·
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2

Undergrad I don't get the Slowly Varying Envelope Approximation

  • carllacan
  • · Replies 2 ·
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2

Undergrad Why do eyes only see in straight lines? (Light Physics)

  • NaukowiecGirl
  • · Replies 4 ·
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4

Graduate Recoil on mirrors and conservation of momentum

  • Danyon
  • · Replies 12 ·
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12

Graduate Laser frequency doubling range for nonlinear crystals

  • K_Mitchell
  • · Replies 1 ·
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1

Graduate Diffraction, Amplitude and Phase

  • LmdL
  • · Replies 5 ·
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5

Graduate How Does Specular Reflection Support the Particle Theory of Light?

  • vin300
  • · Replies 13 ·
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13

Graduate Why Does Light Have No Mass If It's Made of Particles?

  • Anithadhruvbud
  • · Replies 25 ·
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25

High School About light -- why when I look at a star I see rays around it?

  • CollinsArg
  • · Replies 20 ·
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20

Graduate Direction or angle independent image formation in lens

  • deval vyas
  • · Replies 1 ·
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1

Undergrad Disparity about Near-Infared rays' penetration of the body

  • DavidReishi
  • · Replies 1 ·
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1

Undergrad Energy from cosmic microwave background

  • chris1969
  • · Replies 6 ·
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6

Graduate How would moving at the speed of light be perceived?

  • hewiiitt-
  • · Replies 1 ·
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1

Graduate Physics of noise picked up by a radio when home lights are switched off

  • nikos adamopoulos
  • · Replies 2 ·
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2

Undergrad Light: same frequency=different wavelength?

  • LLT71
  • · Replies 5 ·
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5

High School Alternative to bifocal and varifocal spectacle lenses?

  • tim1608
  • · Replies 18 ·
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18

High School Why Does Wave Interference Alter Intensity Distribution?

  • physics user1
  • · Replies 2 ·
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2

Undergrad Color of Light: Frequency vs Wavelength.

  • Stella.Physics
  • · Replies 5 ·
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5

High School What is the Effect of Normal Lines on Glass Surfaces?

  • ExperimentingStudent
  • · Replies 4 ·
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4

Undergrad Relationship between wavelength and refraction

  • 58545256
  • · Replies 22 ·
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22

Undergrad Optical instruments: Microscope and Telescope

  • D. Wani
  • · Replies 3 ·
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3

Graduate How do massless photons reflect off mirrors?

  • StanEvans
  • · Replies 3 ·
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3

High School Why plastic eyeglasses have less clarity than glass?

  • cube137
  • · Replies 3 ·
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3

Undergrad A source's effect on diffraction pattern

  • Aldnoahz
  • · Replies 2 ·
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2

Undergrad Determine emission spectrum of an LED

  • Lotic7
  • · Replies 50 ·
2
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50

Graduate Can a high-index layer shift infrared toward 700nm to boost silicon solar cells?

  • Physicist50
  • · Replies 16 ·
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16

High School Why do diffraction rings around a misty light always appear flat?

  • Naturestan
  • · Replies 1 ·
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1

Graduate Fermat's Principle, Snell's Law, and the Prism

  • Roger Dodger
  • · Replies 8 ·
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8

Undergrad Can you find lens magnification from focal length?

  • Kavorka
  • · Replies 13 ·
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13

Graduate Mechanism for extinction by scattering?

  • damosuz
  • · Replies 9 ·
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9

Undergrad Why waves of light don't hit each other?

  • aiop
  • · Replies 14 ·
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14

Graduate Frequency dependence of propagation angle in optical waveguides

  • EmilyRuck
  • · Replies 5 ·
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5

Undergrad How do photons emit different types of radiation?

  • smartypants123
  • · Replies 6 ·
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6

Undergrad Identifying the length of the object on the image

  • Erol2
  • · Replies 2 ·
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2

Graduate How to Calculate d(theta0)/d(theta1) in Snell's Law?

  • ytht100
  • · Replies 2 ·
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2

Undergrad What is light composed of beyond being energy?

  • aiop
  • · Replies 1 ·
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1

High School 10% energy loss glass special structure ?

  • aiop
  • · Replies 2 ·
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2

Graduate How does light interact, and travel through Solid matter as

  • memoryerasure1
  • · Replies 1 ·
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1

Undergrad Why does a banana appear yellow under RGB light from a TV?

  • Anand Sivaram
  • · Replies 21 ·
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21

Undergrad Binoculars and light amplification

  • cube137
  • · Replies 77 ·
3
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77

High School Why doesn't air resistance stop a moving shelf?

  • harvey1999
  • · Replies 14 ·
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14

High School Image formation by convex lens

  • Shrish
  • · Replies 5 ·
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5

Graduate Beam of Light Exerts a Force, Why?

  • Sturk200
  • · Replies 6 ·
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6

Undergrad Thin Film Interference: Can You Have a Phase Difference>2pi

  • Riley Yakel
  • · Replies 4 ·
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4

High School Can laser rangefinders work on non-reflective objects?

  • cube137
  • · Replies 22 ·
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22

High School What Is the Difference Between Interference and Diffraction?

  • Santosh Acharya
  • · Replies 6 ·
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6

High School Shadow pattern from light through a cracked door

  • Chrono_13
  • · Replies 7 ·
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7

Undergrad Can yellow photons be shifted to shorter wavelengths?

  • JG Questions
  • · Replies 42 ·
2
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42

Graduate Determining the light intensity in a double convex lens

  • 01baftb
  • · Replies 7 ·
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7

Undergrad Why doesn't the eye lens converge parallel rays from a distant object?

  • nightsparkling
  • · Replies 13 ·
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13

Graduate What happens after exceeding the speed of light?

  • hubot
  • · Replies 15 ·
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15

Graduate Finding laser power and beam radius as a function of distance

  • MiddleVision
  • · Replies 8 ·
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8

Undergrad Sign convention for real and virtual rays in lenses and mirrors

  • physics user1
  • · Replies 1 ·
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1

Graduate What Happens to Photons and Particles in Our Universe?

  • cave man
  • · Replies 1 ·
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1

High School Can You Trust Your Sunglasses for Total UV Protection?

  • Wolfenden
  • · Replies 14 ·
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14

Undergrad How does optical density relate to mass density and refractive index?

  • SUDOnym
  • · Replies 7 ·
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7

Graduate Transmission of polarized light

  • Kavorka
  • · Replies 1 ·
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1

Undergrad Why Do Narrower Slits Produce More Fringes in Young's Experiment?

  • Priyadarshini
  • · Replies 5 ·
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5

Graduate Why does wavenumber increase linearly with frequency in non-dispersive media?

  • EmilyRuck
  • · Replies 9 ·
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9

Undergrad How does space-time curvature affect light?

  • lynchmob72
  • · Replies 5 ·
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5

Undergrad Young's equation and longitudinal waves

  • Eta
  • · Replies 1 ·
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1

High School Why light can't penetrate the prism with 45 degree angle

  • Gazi
  • · Replies 13 ·
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13

Graduate Thomson scattering and radiating power

  • Shinji83
  • · Replies 5 ·
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5

Graduate Presumed mass content of photon as gravitational source

  • DaTario
  • · Replies 3 ·
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3

Undergrad Destructive Interference of two waves

  • SDewan
  • · Replies 6 ·
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6

Undergrad Faster than light travel in a vacuum chamber

  • Fraser MacDonald
  • · Replies 4 ·
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4

High School Will I be able to see a monochromatic ray of light in space?

  • Fiona Rozario
  • · Replies 9 ·
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9

Graduate Single photon absorbed by single atom antenna

  • jaydnul
  • · Replies 2 ·
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2

Graduate Can you see a light beam trapped between parallel mirrors?

  • Raiden60
  • · Replies 1 ·
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1

High School Light waves traveling through air

  • Ajay.makhecha
  • · Replies 2 ·
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2

Undergrad Precision Measurements with a Michelson Interferometer

  • whatisreality
  • · Replies 4 ·
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4

High School Do All Forms of Light Travel at the Same Speed?

  • EndlessMuyo
  • · Replies 5 ·
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5

Undergrad Speed of light of different wavelengths in medium

  • LmdL
  • · Replies 8 ·
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8

Graduate Overlaying optical field with Zernike aberration

  • lechris
  • · Replies 2 ·
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2

High School How polarized test image cards work

  • jlcd
  • · Replies 20 ·
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20

Graduate Could we "catch" the light from prehistoric Earth and see dinosaurs?

  • smsaks2000
  • · Replies 4 ·
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4

Graduate Effect of a distant cold object in focus of concave mirro.

  • Andrew1955
  • · Replies 14 ·
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14

Graduate Can we observe particles without photons or using entanglement?

  • SireJoe
  • · Replies 11 ·
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11

Undergrad Why does a horizontal wire produce a vertical diffraction pattern?

  • Anupama
  • · Replies 15 ·
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15

Undergrad Image formation when object is at focal point of concave mirror

  • DaTario
  • · Replies 14 ·
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14

Undergrad Why doesn't diffraction from a wall create visible fringes?

  • toesockshoe
  • · Replies 2 ·
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2

Graduate Revolving light source and creation of angular momentum

  • jartsa
  • · Replies 12 ·
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12

Graduate Compact driver and temperature control for superluminescent diode in rocket

  • Nicholas moore
  • · Replies 3 ·
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3

High School Why does light refract toward the thicker part of a lens?

  • brian.green
  • · Replies 4 ·
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4

Undergrad How Do Homopolar Motors Work Without Current Flow?

  • brian.green
  • · Replies 16 ·
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16

Graduate Hidden non-linearity in interference from energy equations vs wave equations

  • Charles Link
  • · Replies 9 ·
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9

Graduate Intensity-wavelength graph for X-ray

  • Titan97
  • · Replies 1 ·
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1

Graduate Is There a Commercially Available Filter for Collimation by Filtering?

  • stg
  • · Replies 6 ·
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6

Undergrad Explain the value of refractive index of water?

  • Yen Pham
  • · Replies 2 ·
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2

High School Why can't light be in black color?

  • Anithadhruvbud
  • · Replies 67 ·
3
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67