Optics Forum

Undergrad Circuit with superconducting wire 1 light year in length

Undergrad Infrared Laser spinning a small paper

Undergrad Can refractive index matching make a solid invisible in a liquid?

Undergrad Polarization of a Guitar String

High School Why do mirrors reverse left and right but not up and down?

Undergrad Calculating Number of Images in Mirrors

Undergrad Calculating Refractive Index of Liquid Mixtures: Is There a General Formula?

Undergrad Why do DVDs scatter blue light and CDs scatter white light?

Graduate Moving faster than the speed of light

Undergrad Polished surface of metal as a mirror

High School Speed of Light: Get Answers to Your Questions

High School Can Non-Microwave Safe Plates Cause Explosions in a Microwave Oven?

Undergrad Why do equal-amplitude waves exchange properties on collision?

Graduate How wide is a photon in the double-slit experiment?

Graduate Invisibility cloaks using metamaterials to bend light

Graduate Michelson Interferometer and white light fringes

High School Settle my dispute- Can you see more of yourself in a mirror?

Graduate Quantifying Photons: How Many in a Given Space?

Graduate Conceptual problem on Polarization

Undergrad Chromatic Aberration: Lens & Mirror Effects

Undergrad How Can an Object Emit Light/Radiation Without Energy Source?

Graduate How does a converging lens create the Fourier transform of an aperture?

Undergrad Why does a mechanical wave reflect with a phase change of pi at a fixed support?

Graduate Will the Room Stay Illuminated in Einstein's Photon Box?

High School Do black surfaces absorb all photons and convert light to heat?

High School What would you see if a red light was the only thing in existence?

Graduate Can Pauli exclusion principle enable faster-than-light communication?

Graduate Does Integration Imply Superposition in Field Calculations but Not in Energy?

High School Light double slit interference - at home

Undergrad Sky colour explanation by scattering

High School What other properties does light have besides particle and wave behavior?

High School Why is the intensity of polarised light equal to half of the incident light?

High School Incident light angle brightness

Undergrad Why do different colors of light have different speeds in a prism?

Undergrad Will intensity of this light become infinity?

Undergrad Question on the original Michelson-Morley Experiment

High School Why does a fluorescent light burn out?

Undergrad Regarding the 1light year pole question

High School How long would it take to move a pole one light year long one foot?

Undergrad Can two light waves 180 degrees out of phase cancel out completely?

Undergrad Superposition Of Transverse Waves.

Graduate What Causes the Diffraction Pattern When Looking at a Lamp Through a Slit?

High School Do laser pointer photons travel millions of miles into space?

Undergrad How does one measure the index of refraction of a liquid, and .?

Undergrad Why does wave theory say light energy is independent of frequency?

Undergrad Why do microwave ovens emit more energy than cell phones at similar frequencies?

Undergrad How does a microwave oven generate and contain radiation for cooking?

High School Why do mirrors show reversed images of people?

Graduate Photons and physical interpretation of Fourier transform

Undergrad In optics experiments we assume that the sun rays are parallel

Undergrad Why is light from a single slit coherent but not from a lamp?

Graduate Cross section for scattering of gauge bosons and Majorana neutrinos

Graduate Laser Interference: Why No Alternating Bright and Dark Light?

Undergrad Do water molecules keep oscillating after removing food from a microwave?

High School Why do microwave ovens use 2.45 GHz instead of other electromagnetic frequencies?

High School Materials for Dispersing Laser Beams

High School Why does a ping pong ball look bigger when half submerged in water?

Graduate Appearence with negative index of refraction

Graduate Are wavelengths well defined or vague?

Graduate Window screen focuses bricks beyond?

Graduate Is there a relationship between the energy and mass of photons?

• Poll

Undergrad Is black a colour or an absence of light?

High School The Possibility of Making Objects Invisible Using Sound and Light

High School Why does a camera always focus but myopic eyes cannot?

High School What happens when these two waves meet?

Undergrad Doppler Effect of Light Waves at Half Speed?

Undergrad Why Does Camera Zoom In When Lens Expands?

High School How does wavelength affect diffraction?

Undergrad Understanding Angular Magnification for Objects at Different Distances

Undergrad What Do You See When Replacing a Screen with Your Eyes for a Real Image?

High School Power Plant Types: Learn About Microwave Power Plants

Graduate Why Does Light Travel at Different Speeds in Various Media?

High School Is Ball Lightning Just a Slow-Burning Gas Phenomenon?

Undergrad Light entering a right-angle prism at a non-perpendicular angle

Graduate Ray Optics: Angular Magnification

Graduate Capturing Light with a Theoretical Mirror Sphere: Observable? Possible?

Undergrad Lightning bolt power and Back to the Future

High School Why flash of light in a digital camera?

Undergrad Do photons experience time dilation at light speed?

Undergrad Single Slit Diffraction and Huygen's Principle

Undergrad Can a Laser Affect Water? Solutions Needed

High School Where is the principle focus of a plain mirror?

High School Is Light Composed of Electrons or Protons?

Graduate Where does linear superposition hold in electromagnetism and quantum mechanics?

High School About how to prevent being struck by lightning

Undergrad Refraction of light through ice crystals

Undergrad Single Slit diffraction question

Undergrad Photons are produced at random?

Undergrad How Do Sundogs Form?

Undergrad Where to buy an off-axis collimating lens

Undergrad How does Gravity travel the speed of light

High School Could be a daft question but needs asking

High School What main wavelengths are within sunlight (p.s. not a hw problem)

Graduate What is the best material for my desired reflectivity?

High School Physical explanation for camera DOF (depth of field)

High School Can a glass filter produce black and white images?

Graduate Negative diffraction and Poynting's vector in EM waves

Graduate Optics: polarisation alignment