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Graduate X-rays produced by Solar Flares/CMEs

  • Dr Wu
  • · Replies 1 ·
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1

High School Can light generate propulsion?

  • RandyD123
  • · Replies 9 ·
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9

High School Can someone explain this projection distortion effect

  • jwilliams77
  • · Replies 5 ·
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5

Undergrad Why are large solid objects colored if scattering depends on size?

  • Remixex
  • · Replies 12 ·
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12

Graduate Intuition for Rayleigh Scattering

  • bananabandana
  • · Replies 3 ·
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3

Undergrad Would a one light-year chain of mirrors show the past?

  • BretN
  • · Replies 3 ·
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3

Undergrad Can light be polarised by total internal reflection?

  • Ankush GK
  • · Replies 8 ·
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8

Undergrad How to focus and direct microwaves?

  • SummerFuse
  • · Replies 2 ·
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2

Undergrad Why don't two incoherent point sources create an interference pattern?

  • Philip Wood
  • · Replies 8 ·
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8

High School Why Use a Photodetector in Interferometry?

  • Silviu
  • · Replies 13 ·
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13

Undergrad Why does the Beer-Lambert transmission equation have (1-R)²?

  • Carlos de Meo
  • · Replies 5 ·
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5

Graduate How Do Polar Coordinates Explain a Bead's Velocity on a Rotating Wheel?

  • Precipitation
  • · Replies 2 ·
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2

Graduate Can Low Energy Photons Cause Box Explosions?

  • tionis
  • · Replies 2 ·
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2

Graduate Optics - Re-aligning P Polarization with Brewster Windows

  • SteveeGeorge
  • · Replies 1 ·
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1

Undergrad Why does blue Sharpie ink appear orange on black plastic?

  • pixel
  • · Replies 6 ·
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6

Undergrad Maximum light intensity underwater during seasons?

  • Alfreds9
  • · Replies 4 ·
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4

Undergrad Do solar panels or reflective surfaces better reduce global heating?

  • Patrick Pihl
  • · Replies 3 ·
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3

Undergrad Hi, how to find the magnitude of a rotating vector?

  • rashida564
  • · Replies 17 ·
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17

Graduate Can a Rotating Coherent Laser Beam Create a Persistent Light Dot for Holography?

  • hackhard
  • · Replies 6 ·
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6

Graduate Why do transmission and reflection add to 110% in this optics experiment?

  • erisedk
  • · Replies 3 ·
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3

Graduate Fresnel transmission coefficient for second harmonic generation in GaN

  • Jose Antonio
  • · Replies 4 ·
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4

Undergrad Drop in power in a directed microwave beam?

  • Patrick Pihl
  • · Replies 3 ·
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3

Undergrad Does Destructive Interference Cancel Energy?

  • Chris Frisella
  • · Replies 49 ·
2
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49

Undergrad Horizontal Noise Stripes in an Image

  • ecastro
  • · Replies 15 ·
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15

Graduate Circularly polarized light through a polarimeter

  • lcr2139
  • · Replies 10 ·
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10

Graduate How long for voltage to propagate through a light-year long rod?

  • Bullington
  • · Replies 17 ·
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17

Undergrad Logarithmic scale for the Laser Intensity.

  • Amany Gouda
  • · Replies 4 ·
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4

Graduate X-ray emission from a klystron tube

  • rpayne88
  • · Replies 7 ·
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7

Undergrad How can I correlate the light intensity and energy?

  • _Gandalf_
  • · Replies 8 ·
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8

High School Laser beam in oil/water, why is it easier to see beam in oil

  • Petra de Ruyter
  • · Replies 2 ·
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2

Undergrad Maximum angle of acceptance - optical fibre

  • Petra de Ruyter
  • · Replies 9 ·
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9

Graduate Intuitive reasoning for frequency remaining constant during refraction

  • Frank Castle
  • · Replies 10 ·
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10

High School Why does Lightning create Bright Bands on a Camera?

  • greswd
  • · Replies 12 ·
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12

High School Why do convex lenses magnify, and why don't concave lenses?

  • yosimba2000
  • · Replies 14 ·
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14

Graduate Can you predict spot diagram when reversing an optical system?

  • Emperor42
  • · Replies 5 ·
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5

Undergrad Where do photons *Actually* come from?

  • Ontophobe
  • · Replies 7 ·
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7

Undergrad Why does a mirror diffuse converging sunlight instead of reflecting it?

  • RaamGeneral
  • · Replies 8 ·
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8

Undergrad Why did Michelson and Morley expect different light speeds in different directions?

  • avito009
  • · Replies 14 ·
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14

High School Why do farther away objects appear smaller

  • member 529879
  • · Replies 11 ·
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11

Graduate Resolution when not diffraction limited

  • Emperor42
  • · Replies 7 ·
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7

Graduate Which properties of photons carry info on size,width,height?

  • Tareq Naushad
  • · Replies 1 ·
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1

Graduate When I lit a laser ray for 10 seconds from a distant planet

  • Tareq Naushad
  • · Replies 7 ·
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7

Undergrad Can illuminance be converted to luminance or vice versa?

  • Howlin
  • · Replies 14 ·
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14

Undergrad How mirror/camera/tv work without human eye like system?

  • Tareq Naushad
  • · Replies 2 ·
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2

High School Understanding In-Phase and Definite-Phase Relationships

  • Icy98
  • · Replies 2 ·
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2

Undergrad Energy fighting in combat flight sims

  • VMP
  • · Replies 3 ·
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3

Graduate TEA laser from Wimshurst machine: spatial and temporal coherence questions

  • whitsona
  • · Replies 8 ·
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8

Graduate Absolute Relativity (who needs virtual photons anyhow?)

  • Jlister
  • · Replies 8 ·
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8

High School Does Earth's atmosphere delay sunlight by an appreciable amount?

  • Prasun-rick
  • · Replies 4 ·
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4

Graduate Can a Ring Laser Interferometer Measure Earth's Spin and Determine Latitude?

  • aladinlamp
  • · Replies 12 ·
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12

Graduate Creating a Holographic Projecting Lens: Ideas and Procedures

  • Souvik Bhattacharya
  • · Replies 5 ·
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5

Undergrad Change in energy as light passes through air/water

  • tkyoung75
  • · Replies 31 ·
2
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31

Undergrad What is the resolution of light?

  • DBBPhysics
  • · Replies 8 ·
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8

Undergrad Why Does Light Penetrate to a Certain Depth?

  • nmsurobert
  • · Replies 12 ·
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12

Graduate Achieving q-switching through cavity stability manipulation

  • ppedro
  • · Replies 3 ·
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3

Undergrad What´s the optical effect happening in this picture?

  • lennon
  • · Replies 12 ·
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12

Graduate Penetration depth of a microwave

  • PTlusitano1143
  • · Replies 1 ·
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1

Graduate Could the speed of light be different in different universes?

  • Sebastiaan
  • · Replies 9 ·
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9

Graduate Can photons with wavelength smaller than 0.1 nm interfere?

  • tionis
  • · Replies 3 ·
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3

High School Are UV Films for Windows Really Effective in Blocking UV Rays?

  • Solid Snake
  • · Replies 2 ·
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2

Undergrad Is it possible to create artificial lightning?

  • Manoj Sahu
  • · Replies 14 ·
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14

Graduate Thick Lens focal length and surface facing the object

  • fog37
  • · Replies 10 ·
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10

High School Irradiance at a point on a surface

  • Pilpellon
  • · Replies 1 ·
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1

Undergrad Practical scenario: NIR laser, black light marker and lamp.

  • MATT F
  • · Replies 1 ·
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1

Graduate Infrared Light passing though Atmpshere

  • Sebastiaan
  • · Replies 2 ·
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2

Graduate Do the Relative Permittivity and Refractive Index of Water Match Up?

  • DaMasta345
  • · Replies 1 ·
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1

Undergrad Regarding the wavevector spread.

  • otaKu
  • · Replies 8 ·
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8

Undergrad Fermat's principle of least time

  • LLT71
  • · Replies 4 ·
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4

Undergrad Blu-Ray Disc: Shorter Wavelength, Bigger Storage?

  • avito009
  • · Replies 5 ·
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5

Undergrad Why does speckle size decrease with higher concentration of polybeads?

  • Daymare
  • · Replies 7 ·
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7

Undergrad Why doesn't white light separate into stacked colors in a prism?

  • yosimba2000
  • · Replies 12 ·
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12

Graduate Is interstellar travel impossible due to kinetic energy magnitude?

  • BitWiz
  • · Replies 80 ·
3
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80

Undergrad Why and How of the schuster's method.

  • x3qt0r
  • · Replies 1 ·
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1

High School Understanding Starlight: White Light, Double Slit Experiment, and Color Emission

  • Zack K
  • · Replies 5 ·
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5

High School What image forms on a rotating mirror?

  • ayushkawad1
  • · Replies 1 ·
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1

Graduate Planck time at the speed of light

  • Adgorn
  • · Replies 3 ·
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3

High School Can amplifiers boost radio waves for stronger signal?

  • GameActuator
  • · Replies 9 ·
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9

Undergrad What happens if multiple paths satisfy Fermat's principle?

  • Joyal Babu
  • · Replies 8 ·
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8

Undergrad Why does a photon have momentum if it has no rest mass?

  • Deepak K Kapur
  • · Replies 45 ·
2
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45

High School Green laser on pink highlighter shows yellow dot but green reflection

  • thetexan
  • · Replies 23 ·
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23

Undergrad Huygens principle introduction

  • abhinavjeet
  • · Replies 3 ·
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3

Undergrad Why is a lens used in Fraunhofer diffraction?

  • abhinavjeet
  • · Replies 5 ·
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5

Graduate Lens aligning various angle of incidence light striking it?

  • shane2
  • · Replies 9 ·
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9

High School Lighter equals faster acceleration

  • Mohd Abdullah
  • · Replies 12 ·
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12

Undergrad Is the photon energy formula E=hf an axiom?

  • AyoubEd
  • · Replies 4 ·
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4

Undergrad Any sunlight band pass filter for 400-700nm of EM Spectrum?

  • shane2
  • · Replies 10 ·
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10

High School Showing light to be a particle question

  • cruxx
  • · Replies 2 ·
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2

Undergrad How does radiant intensity increase with a parabolic reflector?

  • eng3
  • · Replies 2 ·
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2

High School Found something odd while procrastinating, fan/computer

  • Rainbrew
  • · Replies 5 ·
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5

High School Limit of Focal Spot Size for Lensing EM Radiation Across Frequencies

  • houlahound
  • · Replies 5 ·
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5

Graduate Distance based opaque to transparent behaviour

  • deval vyas
  • · Replies 4 ·
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4

High School Do photons from a flashlight keep traveling through space indefinitely?

  • terryds
  • · Replies 6 ·
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6

Undergrad Does reflective interior lining cool a greenhouse more than black absorptive surfaces?

  • shane2
  • · Replies 1 ·
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1

Graduate How is Circularly polarized light changed upon refraction?

  • Latempe
  • · Replies 2 ·
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2

Undergrad Is a Photon the Smallest Particle Known?

  • Keiran OConnor
  • · Replies 25 ·
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25

Graduate FLP Vol. I Ch.33: reflection coefficient perpendicular polarization

  • duffing
  • · Replies 1 ·
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1

Graduate Photon size and classical fields

  • phyzguy
  • · Replies 4 ·
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4

High School Proving to someone the speed of light is real

  • kolleamm
  • · Replies 19 ·
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19

Undergrad Why does absorbed radiation get re-emitted at a different frequency?

  • ViolentCorpse
  • · Replies 4 ·
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4

High School How are polarization filters made from aligned organic molecules?

  • Catch22meifucan
  • · Replies 3 ·
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3