Optics Forum

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High School Where Does Electromagnetic Energy Go?
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Undergrad A question about mirrors and images
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High School Why Do Sunglasses Have Zero Power?
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Undergrad Mirrors & Photons: More Light in 6' x 6' Room w/Mirror?
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Amazed by the Sight: One Fan, Two Colors
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Undergrad Light: Electron Deflection Q&A
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Graduate Can black lines on a mirror cause diffraction of light?
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High School Why I can burn a paper with magnifying glass and sun?
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Graduate Lots of questions on wave optics
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Graduate Polarization states of light in 2D
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Undergrad Violet light produced from green He-Ne laser?
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Undergrad Please, can someone explain me spatial coherence?
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Graduate How Does Temporal Coherence Relate to Spectral Width in Absorption Features?
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Graduate Do E and B Fields Distort When Focusing Photons with a Lens?
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Undergrad Diffraction, refraction & reflection
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High School Interference occurs, if two waves are said to be coherent
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Undergrad What is the Cutoff Wavelength for a Photon Passing Through a Waveguide?
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High School Greetings, how does light travel through the glass?
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Graduate How Do Coherent Waves Maintain Identity in RF Systems?
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Graduate Scientist makes radio waves travel faster than light
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Graduate Do lasers suffer R^2 propagation loss
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Undergrad Understanding Brewster Angle & Polarised Beams
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Graduate Wavelength Function and Diffraction Orders Explained
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Graduate How do compensating Amici prisms work?
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Undergrad What color would a door painted with ultraviolet paint appear to be?
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Undergrad Why does the angle of light through a prism change based on its wavelength?
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Graduate Color\Light efficiency in imaging systems
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Undergrad Times of flight for projectiles
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Undergrad Why Do LCD Monitors Have Limited View Angle?
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Graduate Phase Change over Distance: Understanding k and l in Wave Analysis
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Undergrad Dissipation of Light: Measuring Intensity & Energy Loss
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Undergrad Young's double slit expt - purpose of the first slit
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Graduate The Nature of Photons: Do They Truly Travel Between Points A and B?
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Graduate Question: Time in Zero Velocity as Opposed to Light-Speed
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Graduate Path difference in Fabry-Perot etalon
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Graduate How to Safely Clean and Remove Residues from a Polarizing Beamsplitter Cube
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Graduate Scientists build world's first anti-laser
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Graduate Kirchoff's radiative balance law and polarisation of emitted light
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High School How Does a Mirror Work and Why Doesn't It Look Blue?
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Undergrad Total internal reflection zero
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High School How can i calculate the brightness of moon's light at night on the earth?
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High School Why Don’t Photons Get Trapped Forever Between Two Mirrors?
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Graduate Laser Beam Destructive Interference
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Graduate Why do x rays travel faster than light in some states of matter
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Undergrad How Does the Laser Impact the Functioning of an Ion Thruster?
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Graduate Can Photons Interact with Each Other Through Electron Mediation?
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Undergrad How Do Optic Fibers Minimize Interference While Transmitting Information?
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Undergrad Clarification required: polarization density and displacement field
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Graduate Is Light Truly Discrete or Merely a Manifestation of Matter's Nature?
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High School Driving Through a Rainbow: A Real Life Story
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Graduate Determining Path Length in a Double Slit Experiment
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Undergrad Sources for the diffracted waves
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High School Why Does Light Disappear When the Source is Turned Off?
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Undergrad Losses involved in reflection and refraction
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Graduate Feynman says photons ARE particles
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Graduate Laser beams in the frequency range of of microwaves
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Undergrad Snell's law and the concept of critical angle
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High School What happens when you pass red light through different colored glass?
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Undergrad Light and our rate of perception
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Graduate Optical Phase Detection Techniques for Improved Noise Floors in Interferometers
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Graduate What would happen if an ICBM was hit by a 1.3 petawatt laser?
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Graduate Entangled Frankenstein Photons
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Graduate Extending Malus's law to the general case.
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Graduate Question on derivation of Fresnel's equation in Griffiths
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Graduate Damping of a Laser Beam: Understanding the Science and Equations
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Undergrad How photons create an image via the brain
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Undergrad Understanding the Science Behind Blue + Yellow = Green Perception
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Undergrad Application of microwave beams
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Undergrad Determining Wave Direction: Possibilities and Limitations
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Graduate 180 degree Compton Scattering: low versus high energy initial photon
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High School How does my microwave oven affect a wireless router?
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High School Piano & Penny vs Feather Dropped from Empire State Building
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Undergrad Curvature of an Artificial Rainbow (created in Lab).
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Undergrad The nature of light from colored(visual) materials
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Undergrad If photons have no mass, then how can they travel the speed of light?
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Graduate Question on TEM representation used in Griffiths book
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High School Where Does the Green Go at Twilight?
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High School My Puzzle: Does Light Travel Instantly in a Smaller Scale?
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Undergrad Harnessing Solar Energy with Fresnel Lenses
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Graduate Photon Emission: Atom Collapse & Radial Forces Explained
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Undergrad Change in velocity of light with change in optical density
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Changing the Surface of an object
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High School How does refractive index matching make a solid disappear in a liquid?
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High School A interesting phenomenon about fingerprints and liquids
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Graduate Precession of a football in flight
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Undergrad Making a Fresnel Lens for Solar Water Purification
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Graduate Absolute Zero & Speed of Light
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Undergrad Can You Measure the Speed of Light at Home Like 19th Century Scientists?
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Undergrad Why Is Light Considered a Wave When It Travels Without a Medium?
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Undergrad Determining X-ray strength and exposure
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High School How Can You Measure Light Wavelengths Using Microscope Slides and Rubber Bands?
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Graduate Optics & Resolution: Can I See the Peak?
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High School Understanding Real vs Virtual Objects in Convergent/Divergent Lenses
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High School Question - Atmospheric Perspective
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Graduate Find Parallel Polarized E Field Reflection Direction
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Undergrad Why Does Light Have a Maximum Speed?
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Graduate Photon in a massless mirrored box
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High School Light Frequency: What is the Lowest/Highest Frequency?
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Undergrad Refraction at normal incidence
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Graduate E = Em sin(kx-wt) and I = T+R what wavelength is reflected wave
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