Optics Forum

Post thread
Graduate Lightspeed - Spaceship on a lever theory.
  • · Replies 9 ·
Replies
9
Views
4K
High School Does the single diffraction work for sound wave
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Optic lens to collimate/focus light from a LED.
  • · Replies 3 ·
Replies
3
Views
3K
Graduate What happens when light hits light?
  • · Replies 43 ·
2
Replies
43
Views
14K
Undergrad Why doesn't a tungsten light bulb have discrete spectral lines?
  • · Replies 8 ·
Replies
8
Views
6K
Undergrad Eyepiece - Huygens versus Ramsden
  • · Replies 3 ·
Replies
3
Views
19K
Undergrad Understanding the Single Slit Diffraction Pattern
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Infrared Remote Controls & Red Light: How Fast Does It Need To Go?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Confusion about light exerting a force
  • · Replies 3 ·
Replies
3
Views
2K
High School Why if a ray pass though different materials its direction changes?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate How to Calculate Dimensions for a Magnifier and Thin Prism Working Together?
  • · Replies 1 ·
Replies
1
Views
2K
High School Light reflection without a surface
  • · Replies 10 ·
Replies
10
Views
2K
Graduate How Does Light Move Through Space-Time If It Experiences No Time?
  • · Replies 15 ·
Replies
15
Views
2K
Undergrad How Do You Calculate the Percentage Transmission Using the Beer-Lambert Law?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Plotting the polarization ellipse
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Does the Transmission Coefficient Affect Phase Relationships in Optics?
  • · Replies 2 ·
Replies
2
Views
2K
High School Teeth double reflection in mirrors
  • · Replies 2 ·
Replies
2
Views
8K
Graduate Interference/Difraction wrong consideration
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Reverse calculation of radius and principal planes of thick lens
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Handwaving to match orders of magnitude
  • · Replies 11 ·
Replies
11
Views
4K
Graduate Speed of light - causality - etc
  • · Replies 2 ·
Replies
2
Views
3K
High School Lens - What physical features makes a lens thin?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Are the photons we interact with actually anti photons?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad How can scientists measure the speed of light?
  • · Replies 20 ·
Replies
20
Views
4K
Undergrad Build a Home Laser Engraver for Aluminum w/ LasersTEA
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Power in beam of light given amplitude
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Where does interference occur in light waves?
  • · Replies 87 ·
3
Replies
87
Views
13K
Light decomposing when moving your eyes
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad So when i see white light, is it really just seven different photons?
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Can 2 light sources of different wavelenghts interfere one in another?
  • · Replies 11 ·
Replies
11
Views
3K
Undergrad Functioning of a compound microscope
  • · Replies 16 ·
Replies
16
Views
4K
Undergrad Proof That {sin i/sin r} = Refractive Index
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Relative Abundance of Light Frequencies?
  • · Replies 10 ·
Replies
10
Views
2K
Graduate Dodgy step in the Far field approximation
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Can an electron emit a single photon without violating conservation laws?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How Does an Astronomical Telescope Form an Image at Infinity?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Formation of spectrum of colors when light passes through a flat pane of glass
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad Focusing at infinity for a camera and circles of confusion
  • · Replies 7 ·
Replies
7
Views
3K
Undergrad Why are Clouds White? Raman Effect & Rayleigh Scattering
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Why is magnification only defined for small angles?
  • · Replies 14 ·
Replies
14
Views
3K
Graduate What happens to the bandpass of a dichroic filter when it is tilted?
  • · Replies 7 ·
Replies
7
Views
6K
Undergrad Focal Point Purpose in Optics: Human Eye
  • · Replies 1 ·
Replies
1
Views
3K
High School The sky's red color during sunset and sunrise
  • · Replies 3 ·
Replies
3
Views
2K
High School Does dispersion of light occur in reflection?
  • · Replies 2 ·
Replies
2
Views
4K
Undergrad Physical significance of Refractive index
  • · Replies 9 ·
Replies
9
Views
17K
Undergrad Representing violet with an RGB display
  • · Replies 8 ·
Replies
8
Views
4K
Graduate MICROSCOPY: Imaging a field of radiated light and it's source
  • · Replies 5 ·
Replies
5
Views
3K
Undergrad Understanding Wider Viewing Angles: 96 Degrees & Critical Angle
  • · Replies 5 ·
Replies
5
Views
2K
Undergrad What is the correct sign convention for the lens and mirror formula?
  • · Replies 3 ·
Replies
3
Views
5K
High School Refraction: Reflection after passing the critical angle
  • · Replies 3 ·
Replies
3
Views
2K
High School Polarization of white light beam
  • · Replies 13 ·
Replies
13
Views
4K
Graduate Polarized light and refraction
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Best attempts at measuring photon mass?
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Cutting a polarized conductor in half
  • · Replies 9 ·
Replies
9
Views
3K
Hellowhat is the lenticular lenses?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Efficiently calculating the magnitude of gravitational force
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Stoke's model of the luminiferous aether
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Question about light emission.
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How Do Laser Designators Work in Military Targeting?
  • · Replies 22 ·
Replies
22
Views
7K
Graduate Finding B-Field Of Solenoid Slightly Off Axis?
  • · Replies 5 ·
Replies
5
Views
5K
Undergrad Can Laser Amplification Be Achieved with an External Light Source?
  • · Replies 2 ·
Replies
2
Views
1K
Undergrad Confusion about Fraunhofer Diffraction
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Luminance and illuminance of multiple point light sources
  • · Replies 5 ·
Replies
5
Views
5K
Undergrad Why an object has the color complementary to the color absorbed?
  • · Replies 2 ·
Replies
2
Views
7K
High School Why is the speed of light different when traveling in different materials?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate How does the Zeeman Effect contribute to laser cooling of atoms?
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Boundary conditions for an antinode?
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Why Does Light Not Refract at a Convex Lens's Optical Center?
  • · Replies 6 ·
Replies
6
Views
3K
High School Image formation in concave mirrors
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Quick question on interference of light
  • · Replies 5 ·
Replies
5
Views
3K
High School Sound Diffraction Explained: What Is It & How Does It Work?
  • · Replies 7 ·
Replies
7
Views
3K
High School How do I test for UV light in colored LEDs?
  • · Replies 16 ·
Replies
16
Views
10K
Undergrad Phenomenon of Light Refraction
  • · Replies 11 ·
Replies
11
Views
5K
What are some amazing discoveries made in the field of optics?
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Confusion abt relation betwn time travel and speed of light
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Is a Flat Mirror Capable of Producing a Real Image?
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Measuring the Speed of Light (Foucault Method)
  • · Replies 3 ·
Replies
3
Views
4K
High School Lateral inversion up-left and down-right confusion
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Different wavelenghts one photon.
  • · Replies 12 ·
Replies
12
Views
3K
High School A Puzzling Question: Why Isn't Everything Bluer?
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Ray tracing - how to numerically integrate the equation of the ray
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad How quickily does a photon reach c?
  • · Replies 27 ·
Replies
27
Views
5K
Graduate Spectral transmittance measurement
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Why Does the Image in a Plane Mirror Appear to Move at a Different Speed?
  • · Replies 7 ·
Replies
7
Views
8K
Graduate Nanoantennas refractive-index sensing
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad Can materials act as a low pass filter for laser beams?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate How do I calculate the illuminated spot on specimen in optical microscope?
  • · Replies 4 ·
Replies
4
Views
5K
Undergrad Are Both Angles in Young's Double Slit Experiment Equal?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad A strange optics (or math) problem
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Could a man hold sustained flight using sound?
  • · Replies 3 ·
Replies
3
Views
6K
Undergrad Light Explained: Photons, EM Radiation & Frequencies
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Is it possible for the index of refraction to be zero in Snell's law?
  • · Replies 2 ·
Replies
2
Views
3K
High School Visible light wavelength discrepancy on the EM spectrum?
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Principles of Flight - Heavy aircraft vs Light aircraft
  • · Replies 5 ·
Replies
5
Views
9K
Graduate Collimating incoherent light emitted by a LED
  • · Replies 7 ·
Replies
7
Views
8K
High School The diffrence between refraction of sound and light
  • · Replies 9 ·
Replies
9
Views
9K
High School Is there any relation between wavelength and brightness?
  • · Replies 111 ·
4
Replies
111
Views
46K
Graduate Help for understand of spontaneous polarization in piezo
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Snell's Law - complex angle of refraction (need complement )
  • · Replies 11 ·
Replies
11
Views
8K
Graduate How to use interferometer for surface roughness calculations?
  • · Replies 3 ·
Replies
3
Views
3K