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Undergrad Why does green laser have wider output than red and violet?

  • TRB8985
  • · Replies 6 ·
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6

High School How do non-luminous objects form images if they need scattered light to be seen?

  • UchihaClan13
  • · Replies 19 ·
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19

Undergrad Why does 2slit interference depend on wavelength?

  • toesockshoe
  • · Replies 3 ·
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3

Undergrad What Determines the Size of an Image Formed at Infinity in Magnifiers?

  • kent davidge
  • · Replies 5 ·
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5

Undergrad How to calculate phase difference for spherical waves?

  • vijayramakrishnan
  • · Replies 10 ·
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10

Undergrad What is phase difference and how to visualize it?

  • vijayramakrishnan
  • · Replies 21 ·
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21

Undergrad Interaction of light with a shockwave

  • Jstuff
  • · Replies 3 ·
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3

Undergrad What is the need to find the speed of light ?

  • aaeushsingh
  • · Replies 7 ·
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7

Undergrad How do focal lengths and focal planes work in telescope ray diagrams?

  • Jimmy87
  • · Replies 16 ·
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16

Graduate Destructive interference at a surface

  • God Plays Dice
  • · Replies 13 ·
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13

Undergrad Can light accelerate in vacuum?

  • Likith D
  • · Replies 46 ·
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Undergrad Is starlight a TEM00 gaussian beam or plane wave?

  • Robin Lee
  • · Replies 4 ·
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4

Undergrad Why does a Lever arm magnify force?

  • krazy0
  • · Replies 12 ·
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12

High School Could mirrors on the Moon illuminate Earth during night?

  • Saleh0003
  • · Replies 36 ·
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36

Undergrad Why should i=e for minimum deviation in a triangular prism?

  • kay
  • · Replies 2 ·
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2

Graduate Why do black materials not transmit or reflect specific colors?

  • adgalati
  • · Replies 7 ·
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7

Undergrad How does a banana change the color of light?

  • Lucas23
  • · Replies 7 ·
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7

Graduate How does a Resonator enhance coherence? (LASER)

  • Anton Alice
  • · Replies 2 ·
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2

Undergrad Why Does a Single Polarizer Reduce Light Intensity by Half?

  • kent davidge
  • · Replies 9 ·
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9

Graduate Understanding Jones Matrixes for Linear Polarization

  • strange_quark
  • · Replies 2 ·
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2

Undergrad Observing wavelength at an angle

  • TheCanadian
  • · Replies 4 ·
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4

Graduate Damped vs Undamped Driven Springs and superposition?

  • kostoglotov
  • · Replies 1 ·
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1

Graduate Does p-polarization perpendicular to a surface enhance laser cutting?

  • Amany Gouda
  • · Replies 10 ·
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10

High School Why did my 6300 lumen tungsten bulb burn out in hours?

  • CookieSalesman
  • · Replies 52 ·
2
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52

Graduate Radiant power of a series of light waves

  • Ngineer
  • · Replies 6 ·
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6

High School Why do rainbows curve in nature but not in lab experiments?

  • Likith D
  • · Replies 19 ·
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19

High School What is lightning proportional to?

  • Likith D
  • · Replies 5 ·
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5

Undergrad Why Does Light Change Direction When Passing Through a Lens?

  • physics user1
  • · Replies 9 ·
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9

High School Why Infrared Light Can't Travel Easily Through Air

  • Drizzy
  • · Replies 2 ·
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2

Graduate Fraunhofer Lines: Absorption & Re-emission in Solar Atmosphere

  • Anton Alice
  • · Replies 3 ·
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3

Graduate Average number of photons in a cubic meter

  • ellipsis
  • · Replies 6 ·
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6

Graduate How hot does Gaseous H2O need to be to emit IR Photons?

  • Michael Thornton
  • · Replies 6 ·
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6

Graduate CCD pixel size trade-off between sampling and light sensitivity

  • Paffin
  • · Replies 3 ·
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3

Graduate Can a light ray be redshifted so that it contains no info

  • Einstein's Cat
  • · Replies 7 ·
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7

Undergrad Mixing 400 sine waves produces muffled sound with vibration

  • mmphs
  • · Replies 6 ·
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6

Graduate Why Does Light Intensity Decrease with x^4 in 2D Fraunhofer Diffraction?

  • Tibo123
  • · Replies 11 ·
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11

Graduate Do stimulated emissions preserve image through transparent media?

  • David Waller
  • · Replies 17 ·
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17

Undergrad How Does a Michelson Interferometer Measure the Thickness of a Piece of Plastic?

  • whatisreality
  • · Replies 1 ·
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1

Undergrad Why does n = √(εrμr) not show wavelength dependence?

  • physics user1
  • · Replies 1 ·
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1

Undergrad Material that reflects and transmits light in 3D

  • Hornbein
  • · Replies 2 ·
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2

Graduate Why is reflected light 90° out of phase, not 180°?

  • damosuz
  • · Replies 2 ·
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2

Undergrad How is light affected by the gravity of a black hole?

  • Oliver3.141
  • · Replies 3 ·
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3

Graduate Are diffraction patterns additive?

  • izzor
  • · Replies 2 ·
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2

Undergrad Why Does My Snell's Law Demonstration Fail Using a Linear Function Approach?

  • physics user1
  • · Replies 4 ·
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4

Graduate How Do Lenses Exhibit Fourier Transforming Properties in Optics?

  • wellorderingp
  • · Replies 3 ·
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3

Undergrad Optical lasers to photograph space

  • Brian Smith
  • · Replies 8 ·
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8

Graduate Fourier optics with concave (diverging) lenses

  • Qiao
  • · Replies 6 ·
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6

Graduate Visual Fire: An Analysis of the Greek Belief in Eye Emission and Its Flaws

  • Vinay080
  • · Replies 5 ·
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5

High School Why brown sunglasses filter blue light?

  • jlcd
  • · Replies 7 ·
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7

Graduate Does a laser beam spread when passing through doped fiber?

  • God Plays Dice
  • · Replies 1 ·
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1

Graduate Optics: Center of Fizeau Fringe? Michelson Interferometer

  • lechris
  • · Replies 4 ·
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4

Graduate Phase plus Antiphase radio waves

  • Nickelodeon
  • · Replies 1 ·
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1

Undergrad Can refractive index of a material be less than unity?

  • Anithadhruvbud
  • · Replies 20 ·
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20

Undergrad Confusion in Doppler shift equation?

  • Tim541541
  • · Replies 4 ·
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4

High School How does light travel faster in optically rarer medium?

  • Anithadhruvbud
  • · Replies 2 ·
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2

Undergrad Optics : interference and diffraction

  • Abishek Balaji
  • · Replies 5 ·
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5

Undergrad Why is a laser's focus limited by diffraction?

  • God Plays Dice
  • · Replies 2 ·
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2

High School What happens at the boundary with light refraction?

  • JDMuir
  • · Replies 3 ·
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3

Graduate Can Slowing Light Lead to Revolutionary Advances in Science?

  • zAbso
  • · Replies 1 ·
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1

High School What is the best way to measure the sensitivity of photosensors?

  • akzo
  • · Replies 9 ·
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9

Undergrad Can Faster-than-Light Travel Ever Be Possible?

  • Arthurwerbrouck
  • · Replies 9 ·
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9

High School Moon with 22° halo and paraselenic circle

  • Andy Resnick
  • · Replies 1 ·
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1

Undergrad Finding Degree of Linear Polarization

  • pyroartist
  • · Replies 5 ·
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5

Undergrad Why does powder form a dust cloud when dropped in a vacuum chamber?

  • ravindrar
  • · Replies 9 ·
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9

Graduate Michelson Interferometer ring contraction

  • epsilon
  • · Replies 2 ·
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2

High School Can We Reduce the Speed of Light?

  • Passionate Eng
  • · Replies 7 ·
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7

Graduate Fresnel zones in classical reflection from solid surfaces

  • damosuz
  • · Replies 5 ·
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5

Graduate Diffraction of Light with Moving Slit

  • greswd
  • · Replies 18 ·
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18

Undergrad Mechanically, what does light intensity mean?

  • jlyu002@ucr.e
  • · Replies 2 ·
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2

Graduate Why do photons behave differently than particles in scattering processes?

  • CassiopeiaA
  • · Replies 4 ·
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4

Graduate Redshift and blueshift of photons reflecting off a moving mirror

  • God Plays Dice
  • · Replies 1 ·
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1

Undergrad Polarized Glasses plus Windshield Tint = Rainbows

  • jlcd
  • · Replies 1 ·
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1

Graduate Gaussian Beam Focusing: Find A(0) at Beam Waist

  • Lemenks
  • · Replies 3 ·
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3

Undergrad Why is diffused light captured through V-shaped grooves?

  • arthurmani
  • · Replies 9 ·
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9

Undergrad Why does an object near the focal point of a lens create an infinite magnification?

  • adjacent
  • · Replies 20 ·
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20

Graduate What causes the photon to move at different frequencies?

  • netqwe
  • · Replies 12 ·
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12

Undergrad What causes the green penumbra in this picture?

  • Adel Makram
  • · Replies 23 ·
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23

Graduate Interference requires countable wavefields

  • Anton Alice
  • · Replies 13 ·
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13

Graduate Mass increase due to received photon

  • intervoxel
  • · Replies 10 ·
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10

Undergrad I dont understand homopolar motors

  • pkc111
  • · Replies 1 ·
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1

Graduate Arm length tolerance in Michelson-Morley interferometer

  • exmarine
  • · Replies 2 ·
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2

Undergrad Destructive Interference of 2 Lasers?

  • greswd
  • · Replies 7 ·
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7

Undergrad Laser triangulation / Range finder

  • Anton Alice
  • · Replies 5 ·
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5

High School Finding a Class I Laser Pointer for a Science Fair Experiment

  • Dembara
  • · Replies 8 ·
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8

Graduate Exact solutions for r, t, A from reflectance and transmittance equations

  • M_1
  • · Replies 5 ·
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5

Graduate Laser technique for seeing around corners developed at Heriot-Watt

  • diogenesNY
  • · Replies 1 ·
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1

Graduate Acceleration in Plance Polar Coordinates

  • Gbox
  • · Replies 4 ·
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4

Graduate Relation between cross section, scattering angle and KE?

  • says
  • · Replies 3 ·
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3

Graduate What is the maximum amount of light that can fit inside a mirrored sphere?

  • Uhh
  • · Replies 9 ·
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9

Undergrad Why do arctic animals have white fur if snow reflects 80% of UV light?

  • davon806
  • · Replies 8 ·
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8

Graduate Two slit diffraction and energy conservation

  • LmdL
  • · Replies 3 ·
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3

High School Can you measure the amplitude of a specific light wave?

  • NoemMijJakob
  • · Replies 8 ·
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8

Graduate How to calculate birefringence in lithium niobate LiNbO3

  • Lensmonkey
  • · Replies 7 ·
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7

Undergrad Why does sound intensity increase with a gap between speaker and absorbing material?

  • ft92
  • · Replies 2 ·
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2

High School (Question) Monochromatic light on refraction

  • Prajwal77
  • · Replies 3 ·
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3

Graduate Question regarding published value for physical constant re photon density

  • Buzz Bloom
  • · Replies 9 ·
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9

Graduate Why don't we see interference in thick films?

  • Joker93
  • · Replies 5 ·
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5

High School What are radio waves and cosmic waves made of?

  • tom riddle
  • · Replies 5 ·
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5

Undergrad Why Don't Spherical Waves Interfere According to Huygens Principle?

  • alikazemi7
  • · Replies 18 ·
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18

High School Why Do Tiny Objects Appear Brighter When Backlit?

  • Cato
  • · Replies 1 ·
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1