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Graduate What is a Diffraction Limited Spot in Fluorescent Molecule Imaging?

  • Alice Jin
  • · Replies 4 ·
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4

Graduate (distance)(speed of light)^2 = speed of time with units

  • dranseth
  • · Replies 2 ·
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2

High School Why can't we see the image in perpendicular light?

  • LegolasTheElf
  • · Replies 7 ·
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7

Graduate Can you build a gun that shoots one photon at a time?

  • student85
  • · Replies 8 ·
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8

High School Materials that exhibit total internal reflection

  • baba786
  • · Replies 1 ·
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1

Undergrad Understanding Path Difference in Convex Lenses

  • sp1408
  • · Replies 6 ·
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6

Undergrad Optics - combination of thin lenses

  • jakey
  • · Replies 13 ·
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13

Undergrad Photon momentum without rest mass and light as electromagnetic wave

  • jalalmalo
  • · Replies 5 ·
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5

Undergrad Do candle flames and ambient IR have different wavelengths?

  • aruna1
  • · Replies 5 ·
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5

Undergrad Can water droplets in grass start bush fires?

  • jollytime
  • · Replies 5 ·
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5

Graduate Lighting up a fluorescent lamp with a Van De Graaf generator

  • klng
  • · Replies 1 ·
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1

Graduate Is It Possible for Anything to Truly Move at the Speed of Light?

  • Fragment
  • · Replies 7 ·
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7

High School Can we travel over light speed?

  • RunToFreeForFly
  • · Replies 8 ·
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8

Undergrad Why Is Huygens Construction Not Used for Double Slit Diffraction?

  • SimonB
  • · Replies 1 ·
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1

Graduate What is the y n u ray tracing method for optical systems?

  • eschiesser
  • · Replies 8 ·
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8

Undergrad How can RGB reproduce all (most) colours?

  • jodyflorian
  • · Replies 4 ·
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4

Undergrad Why Are Visible Light Waves So Puny?

  • MadmanMurray
  • · Replies 4 ·
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4

High School Can a plane land on an aircraft carrier plane both in flight?

  • mohlam12
  • · Replies 4 ·
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4

Graduate How Does Energy Flow Differ from Light Propagation in Anisotropic Media?

  • sanjibghosh
  • · Replies 1 ·
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1

Graduate Does Ruby Emit Red When Illuminated with Green Light?

  • Topher925
  • · Replies 1 ·
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1

Undergrad Focal Length experiment readings

  • bishshoy007
  • · Replies 1 ·
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1

High School Constant Light without a source?

  • Kazza
  • · Replies 5 ·
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5

Undergrad Do photons from a point source become spaced far enough apart to create gaps?

  • KevinMWHM
  • · Replies 2 ·
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2

Undergrad Understanding Light Slowing in a Medium

  • math_04
  • · Replies 3 ·
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3

Undergrad How do electrons in red LEDs create photons with 1.9 electron volts?

  • Cyrus80772
  • · Replies 21 ·
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21

Graduate Why does wavefront direction change when wave speed changes at a boundary?

  • ryansuchocki
  • · Replies 15 ·
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15

Undergrad How does a photon actually carry an image

  • matt_crouch
  • · Replies 18 ·
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18

High School Are there commercially bought materials to make a laser?

  • Kazza
  • · Replies 11 ·
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11

Graduate What is the role of photons in the weight and force of the universe?

  • CHUMISER
  • · Replies 4 ·
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4

Undergrad Spectrograph with loose receiver for spectral analysis

  • johnintheuk
  • · Replies 3 ·
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3

Undergrad How can I accurately measure irradiance for my UV sanitization device design?

  • tihort
  • · Replies 2 ·
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2

High School Can Lightning Travel Through a Vacuum?

  • jobyts
  • · Replies 1 ·
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1

Undergrad Why Does a Polarizing Filter Transmit 50% of Unpolarized Light Intensity?

  • jdstokes
  • · Replies 4 ·
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4

Graduate Do photons always travel at light speed when they escape a material?

  • leroyjenkens
  • · Replies 7 ·
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7

Can lightning be captured in different colors through photography techniques?

  • justDVL
  • · Replies 4 ·
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4

Undergrad What Determines the Transparency of Materials to Light?

  • Tomtom
  • · Replies 6 ·
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6

Undergrad Diffraction pattern and Fourier Transform

  • transform
  • · Replies 3 ·
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3

Undergrad How do LCD displays darken when turned on?

  • vickyc
  • · Replies 1 ·
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1

Undergrad Does white light exist as a physical phenomenon or only in perception?

  • Tomtom
  • · Replies 4 ·
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4

High School Does light refract between air pressure or temperature zones?

  • addison8019
  • · Replies 19 ·
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19

High School Is the Inside of the Eye Filled with Oxygen or Something Else?

  • jobyts
  • · Replies 6 ·
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6

High School Create Laser Line Effect Using Prisms and a Torch

  • clubturbo
  • · Replies 2 ·
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2

Undergrad Geometric optics - why pinhole bends rays like lens

  • Mårten
  • · Replies 12 ·
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12

Graduate Transmittance of absorbing multilayer thin-films on an absorbing substrate

  • DivGradCurl
  • · Replies 3 ·
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3

Graduate Depolarizing and source linewidths

  • lichen
  • · Replies 6 ·
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6

Undergrad Can Diffraction Occur with Significantly Narrower Apertures?

  • Ahmed Abdullah
  • · Replies 2 ·
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2

Undergrad Geometric optics - why inverted image from thin lens

  • Mårten
  • · Replies 25 ·
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25

Graduate Why is the PSF visible only for bright stars in astronomical images?

  • cepheid
  • · Replies 5 ·
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5

Why don't bugs get killed in the microwave?

  • leroyjenkens
  • · Replies 1 ·
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1

High School How long to turn off fluorescent lights?

  • Loren Booda
  • · Replies 10 ·
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10

Undergrad Can a Raser Amplify Radioactive Rays Like a Laser?

  • desert fox
  • · Replies 12 ·
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12

Graduate Can microwave cloaking be modified to work with visible light?

  • tormund
  • · Replies 2 ·
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2

Graduate Speed of force > speed of light.

  • Chuck St. Lou
  • · Replies 16 ·
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16

Graduate Photon absorbing cloaking device

  • wizekat
  • · Replies 13 ·
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13

Graduate Does Lambert's cosine law apply to a single reflected ray?

  • Ja4Coltrane
  • · Replies 1 ·
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1

Undergrad How big an area can a lens image onto a CCD?

  • Almost
  • · Replies 2 ·
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2

Undergrad Why Are Only He Atoms Excited in He-Ne Lasers?

  • djef
  • · Replies 2 ·
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2

Graduate How do the intensities change when using a polarization beam splitter?

  • kingdomoff
  • · Replies 4 ·
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4

Graduate Does gravity bend light with any mass, and can photons have negligible mass?

  • jobyts
  • · Replies 3 ·
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3

High School Can You Survive Traveling at the Speed of Light?

  • RiseAgainst
  • · Replies 4 ·
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4

Graduate Can light be trapped forever between two perfect mirrors?

  • maniaciswicke
  • · Replies 5 ·
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5

High School Can You See Torch Light in Space?

  • jobyts
  • · Replies 11 ·
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11

High School Does Fire Produce Shadows?

  • lidstrompl
  • · Replies 14 ·
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14

High School Light a light bulb with no contact?

  • BlackKnight
  • · Replies 6 ·
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6

Undergrad What Are the Best Resources to Learn About UV Sanitization?

  • tihort
  • · Replies 2 ·
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2

Graduate Can Gravity Travel Faster Than Light?

  • wolram
  • · Replies 25 ·
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25

Undergrad Do photons build up between two mirrors in a vacuum?

  • Gmanme
  • · Replies 4 ·
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4

Undergrad How does a refractometer work?

  • parthenope
  • · Replies 1 ·
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1

Undergrad Radius of curvature experiment

  • lynsey
  • · Replies 3 ·
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3

Undergrad How could an object (not aerodynamic shaped) achieve flight?

  • lpbug
  • · Replies 2 ·
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2

Graduate Superposition: Does EM Radiation Require an EM Field Everywhere?

  • Psycopathak
  • · Replies 2 ·
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2

Graduate Mathematical shape for a lens with no spherical aberration

  • Hobnob
  • · Replies 41 ·
2
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41

Graduate Are there three velocities of light: phase, group, and signal?

  • LarryS
  • · Replies 2 ·
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2

High School Two way mirror on the side where you can see through it

  • x G r E e D
  • · Replies 5 ·
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5

High School Why Shouldn't You Put Metal Pots in a Microwave?

  • tgt
  • · Replies 1 ·
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1

High School Light trapped in a perfectly reflective box: would it gain mass or burst?

  • mrpeach32
  • · Replies 71 ·
3
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Undergrad Light, refelection, transparency, direction?

  • wdoe999
  • · Replies 2 ·
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2

Graduate How does laser dissipation in air affect power and intensity?

  • Energize
  • · Replies 3 ·
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3

Graduate Interferometer Experiment: Rules for Adding Half Wavelength

  • KFC
  • · Replies 3 ·
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3

Undergrad Can a photon and its reflection in a mirror both hit the same particle?

  • Crazy Tosser
  • · Replies 5 ·
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5

Graduate Does slit width determine which wavelengths can pass through?

  • Gear300
  • · Replies 6 ·
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6

Graduate Can Fresnel Equations Be Generalized for Arbitrary Polarization of Light?

  • Savant13
  • · Replies 7 ·
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7

High School Gps, Mobile phones microwaves and radiowaves

  • SciencePF
  • · Replies 5 ·
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5

Graduate How do photons interact with atoms in X-ray diffraction?

  • matt_crouch
  • · Replies 1 ·
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1

Undergrad When does the photon get captured?

  • Mentia
  • · Replies 1 ·
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1

High School Can a Red Laser Create Beautiful Diffraction Patterns with Limited Materials?

  • p.tryon
  • · Replies 7 ·
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7

Graduate What are saturable absorbers and how do they impact the behavior of lasers?

  • AmyJ
  • · Replies 3 ·
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3

Graduate Does a photon propogate faster than c ?

  • thaddeus
  • · Replies 16 ·
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16

Undergrad Light bouncing in a mirrored box and recoil of the box

  • curiouschris
  • · Replies 12 ·
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12

Undergrad Where Can I Find a Tutorial for Simple Optical System Design Using Zemax?

  • makeendsmeet
  • · Replies 4 ·
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4

Graduate Plane Wave Expansion: Solving Issues with Bohren and Huffman

  • falcao
  • · Replies 2 ·
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2

High School What is the maximum path that lightning can travel?

  • Loren Booda
  • · Replies 2 ·
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2

Graduate Galilean beam expander and spherical aberration

  • Shaddyab
  • · Replies 5 ·
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5

Undergrad Distance traveled by X-rays in air

  • Lambduh
  • · Replies 1 ·
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1

Undergrad Any experimental evidence of Doppler shift in light?

  • Crazy Tosser
  • · Replies 7 ·
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7

Graduate Light Speed Consistency: Puzzling Questions

  • squeeky100
  • · Replies 3 ·
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3

High School Do fiber optic cables use lasers or regular light?

  • DieCommie
  • · Replies 3 ·
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3

High School What is the physics behind this circular rainbow in the sky?

  • D3mon
  • · Replies 2 ·
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2

Undergrad How can photons have momentum without mass?

  • matt_crouch
  • · Replies 4 ·
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4

Graduate Einzel Lens Operating Principle

  • craq
  • · Replies 6 ·
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6