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Undergrad Does a parabolic mirror preserve linear laser polarization at the focal point?

  • lvb884
  • · Replies 15 ·
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15

Graduate Are reflection and refraction the same at the atomic level?

  • AcesHigh
  • · Replies 5 ·
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5

High School Is the speed of light constant for all observers?

  • TT0
  • · Replies 7 ·
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7

Undergrad When is a Numerical Aperture considered High?

  • ecastro
  • · Replies 6 ·
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6

High School Thick convex mirror or a thin one for the anti-theft mirror?

  • heavystray
  • · Replies 35 ·
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35

Undergrad Slit sizes needed for light diffraction

  • genxium
  • · Replies 11 ·
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11

Graduate Light is an oscillating elec field, But with respect to what

  • SBNY444
  • · Replies 14 ·
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14

Graduate Why do waves reflect at open and closed ends differently?

  • Joker93
  • · Replies 5 ·
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5

Graduate Question on beamsplitter when light is backward-incident

  • swengzju
  • · Replies 3 ·
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3

High School What about a material causes it to be shiny

  • gilishaky
  • · Replies 2 ·
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2

Undergrad How incandescent light bulbs create light

  • Yaus Man
  • · Replies 5 ·
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5

Graduate Why does an incandescent solid produce a continuous spectrum rather than emission lines?

  • TheExibo
  • · Replies 1 ·
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1

Undergrad Is white light superposition or a mixture of different wavelengths?

  • Raman Choudhary
  • · Replies 6 ·
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6

Undergrad Realistic air velocties regarding a wing while in flight

  • Bill_Nye_Fan
  • · Replies 3 ·
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3

Undergrad Why does wavelength affect diffraction?

  • atyy
  • · Replies 1 ·
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1

Undergrad Low-cost low threshold optical beam limiter?

  • flux!
  • · Replies 9 ·
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9

Undergrad How to calculate obscuration of the light by small particles

  • A-Noza
  • · Replies 3 ·
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3

Undergrad What is Hamiltonian optics?

  • UchihaClan13
  • · Replies 2 ·
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2

Undergrad Can a ray at 60° to the normal make triangle CAF equilateral?

  • UchihaClan13
  • · Replies 11 ·
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11

Graduate Light: Refraction, Diffraction, Slits, and Energy Law.

  • Prannoy Mehta
  • · Replies 2 ·
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2

Graduate Is it possible for photons to display in the center of room?

  • Malaxus
  • · Replies 13 ·
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13

High School Is light a wave or a straight line before it hits something?

  • Heretoignore
  • · Replies 40 ·
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40

High School Time for radio waves to reach moon?

  • Chatito
  • · Replies 2 ·
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2

Undergrad What are the problems with using light to transmit data

  • asathor
  • · Replies 4 ·
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4

High School Why does a dark window reflect light like a mirror?

  • aiop
  • · Replies 3 ·
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3

Graduate How do you use Fermat's principle of least time to explain concepts in geometrical optics?

  • isnainidiah
  • · Replies 13 ·
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13

High School Does mirror thickness affect focal length and image sharpness?

  • heavystray
  • · Replies 16 ·
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16

Graduate Physics equations used in real world photonics problem?

  • flux!
  • · Replies 5 ·
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5

Undergrad Best material for reflecting 35GHz RF energy

  • PhysicBob
  • · Replies 9 ·
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9

Graduate Light and Doppler effect paradox?

  • Boorglar
  • · Replies 13 ·
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13

Graduate Fermat's Principle to explain lenses and mirrors

  • isnainidiah
  • · Replies 4 ·
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4

Undergrad What Is Negative Absorption Coefficient in Lasers?

  • Rahul Manavalan
  • · Replies 1 ·
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1

Undergrad Why are you safe in a struck car if not from rubber tires?

  • IAmDOW
  • · Replies 4 ·
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4

Undergrad Image formed from object at focal point of concave mirror

  • Max Matiauda
  • · Replies 1 ·
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1

Graduate Infrared Waves in Optical Fibres

  • modulus
  • · Replies 7 ·
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7

High School How can wave energy and photon energy both be correct?

  • UncertaintyAjay
  • · Replies 7 ·
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7

Undergrad What is the trough in destructive interference of EM?

  • student34
  • · Replies 4 ·
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4

High School Why do angle of incidence and refraction sum to 60 degrees at a prism surface?

  • Alameen Damer
  • · Replies 5 ·
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5

High School Why does light travel in straight lines in a vacuum?

  • thecosmos123456
  • · Replies 4 ·
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4

Undergrad If light transmitting without media, then

  • Steven2007
  • · Replies 2 ·
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2

High School How Does Light Intensity Affect Perceived Darkness and Color?

  • aiop
  • · Replies 7 ·
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7

High School Light contain of what substance?

  • jianshing
  • · Replies 3 ·
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3

High School Why the sky is blue and not violet

  • sunmoon
  • · Replies 2 ·
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2

Undergrad Why an array of telescopes is used?

  • kelvin490
  • · Replies 16 ·
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16

Graduate Why is impossible measurement of the magnitudes when his val

  • Garrulo
  • · Replies 2 ·
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2

Undergrad How does a microwave receiver convert intensity to voltage and current?

  • SataSata
  • · Replies 5 ·
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5

Graduate Which photons pass through a circular annulus?

  • jimgraber
  • · Replies 3 ·
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3

Graduate Can Photons Have a Born Date?

  • Berettaspeed
  • · Replies 13 ·
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13

Graduate Nd:YAG laser optical system setup

  • HAYAO
  • · Replies 4 ·
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4

Graduate Light is a transverse oscillitating wave (can't conceptualize)

  • hongiddong
  • · Replies 2 ·
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2

Graduate How does x-ray diffraction in crystals differ from slit diffraction?

  • kelvin490
  • · Replies 3 ·
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3

Graduate Question about dark fringe in diffraction

  • kelvin490
  • · Replies 1 ·
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1

Graduate Will all matter be converted to photons?

  • bcrowell
  • · Replies 36 ·
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Graduate Do Photons have Mass? - Comments

  • ZapperZ
  • · Replies 5 ·
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5

Graduate Laser TEM Modes - What Determines Output?

  • Goodver
  • · Replies 2 ·
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2

High School Distance between two objects traveling at light speed

  • nirky
  • · Replies 1 ·
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1

Undergrad What produces the photons in light bulb filament?

  • Barry Bonobo
  • · Replies 5 ·
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5

Undergrad Laser focusing over great distances

  • GTOM
  • · Replies 29 ·
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29

Graduate Pressure Impulses during Supersonic Flight

  • 8eou8elisi
  • · Replies 8 ·
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8

Graduate Mathematical descriptions of opacity

  • alikazemi7
  • · Replies 1 ·
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1

Graduate Can two lasers crossing create light of a different wavelength?

  • Petr Kazda
  • · Replies 6 ·
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6

High School Why is the Center of My Microscope Image Lacking Contrast?

  • remorris44
  • · Replies 10 ·
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10

Graduate Does refractive index vary for different wavelengths like X-rays?

  • alikazemi7
  • · Replies 4 ·
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4

Undergrad How to estimate the power of a laser pointer

  • CookieSalesman
  • · Replies 8 ·
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8

High School Can context and culture influence how we see colors?

  • tutankhamun
  • · Replies 9 ·
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9

High School Problem understanding magnification

  • ViolentCorpse
  • · Replies 12 ·
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12

High School How do I create a liquid that generates constant UV light ?

  • Brian de Cruz
  • · Replies 4 ·
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4

Graduate Why superpose two spherical surfaces for lens maker's formula

  • kelvin490
  • · Replies 3 ·
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3

High School Why can't we see colors in moonlight?

  • kapoor_kapoor
  • · Replies 3 ·
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3

High School What causes light to bend toward the normal in refraction?

  • thecosmos123456
  • · Replies 4 ·
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4

High School Direction of Light to our Eyes

  • at94official
  • · Replies 1 ·
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1

Undergrad Why are X-rays and gamma rays classified differently if they overlap in the spectrum?

  • mrbearing
  • · Replies 9 ·
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9

Graduate Quesitons about scattering of light

  • kelvin490
  • · Replies 1 ·
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1

Light line moving across pool from deep to shallow end

  • Abby4761
  • · Replies 8 ·
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8

Graduate How to get to this Surface slope formula?

  • Ornit
  • · Replies 12 ·
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12

Undergrad Polarized light from any suface?

  • kelvin490
  • · Replies 1 ·
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1

Instantanious communication (faster than light)

  • Gaz
  • · Replies 4 ·
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4

Undergrad Optics - focused vs. defocused image

  • gmoose2
  • · Replies 7 ·
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7

Undergrad Why does Snell's law derivation set dT/dx to zero instead of 1/v?

  • Prannoy Mehta
  • · Replies 6 ·
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6

Undergrad Understanding the Wavelength of Light: Explained Simply | 750 nm Explanation

  • alikazemi7
  • · Replies 7 ·
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7

Graduate Recoil of a hydrogen atom emitting Lyman alpha photon

  • Geoff Simmons
  • · Replies 14 ·
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14

Graduate Why can't diffraction happen if wavelength>slit size

  • BriO111
  • · Replies 17 ·
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17

Graduate Refractive index in the ultraviolet region

  • Gruxg
  • · Replies 3 ·
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3

Graduate Membrane Polarization: Best Source for Understanding Effect in Rocks

  • nedallica
  • · Replies 1 ·
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1

High School Light travels in water and not through opaque objects?

  • Christian Grey
  • · Replies 5 ·
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5

Graduate How is radio wave propagation modelled in seawater?

  • H Smith 94
  • · Replies 12 ·
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12

Undergrad Picture of Bragg's diffraction sounds confusing

  • kasha
  • · Replies 2 ·
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2

Heating Sand, Oil, Paraffin, and Salt Water in a Microwave

  • Garyt
  • · Replies 6 ·
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6

Undergrad Optical microscopes and white light / laser light

  • Steve Drake
  • · Replies 4 ·
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4

What is the safest way to focus a powerful laser for a homemade laser gun?

  • Noctua
  • · Replies 4 ·
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4

High School Why there is no rain when clouds are scattered?

  • Muthumanimaran
  • · Replies 7 ·
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7

High School Halogen light bulb filament thicknesses?

  • MRunknown
  • · Replies 16 ·
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16

Undergrad Why does Zn absorb fewer X-rays than Ni if Zn has higher atomic number?

  • Aseth
  • · Replies 7 ·
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7

Graduate Index of Refraction Measurement Uncertainty

  • C. C.
  • · Replies 3 ·
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3

Undergrad Focal length of magnifying glass for VR?

  • dwaring28720
  • · Replies 1 ·
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1

Graduate Does diffraction change the wave vector of a plane wave?

  • ecastro
  • · Replies 11 ·
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11

Graduate Goldstein Central Force Repulsive Scattering

  • decerto
  • · Replies 1 ·
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1

Undergrad Superposition of SHM: Adding Two Equations for Understanding

  • andyrk
  • · Replies 2 ·
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2

Graduate Can Beamed Propulsion be a Viable Method to Reach Pluto?

  • RobertGC
  • · Replies 2 ·
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2

Undergrad Calculating thin film thickness from wavelength and phase shift

  • Marvin94
  • · Replies 3 ·
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3