Optics Forum

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Undergrad Optics - combination of thin lenses
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Undergrad One question about a photon and another about light
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Undergrad Fire & Ambient IR: Is there a Difference?
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Undergrad Burning Bushes: The Science Behind Water Droplets and Fire Ignition
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Graduate Lighting up a fluorescent lamp with a Van De Graaf generator
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Graduate Is It Possible for Anything to Truly Move at the Speed of Light?
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High School Can we travel over light speed?
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Undergrad Why Is Huygens Construction Not Used for Double Slit Diffraction?
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Graduate Optical Ray Tracing - "Y N U" Method & Aperture Stops
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8
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Undergrad How can RGB reproduce all (most) colours?
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4
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Undergrad Why Are Visible Light Waves So Puny?
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4
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High School Can an airplane land over another one both in flight?
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4
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Graduate How Does Energy Flow Differ from Light Propagation in Anisotropic Media?
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Graduate Does Ruby Emit Red When Illuminated with Green Light?
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Undergrad Focal Length experiment readings
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High School Constant Light without a source?
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Undergrad Properties of Photons: Light Source, Observers & Gaps
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Undergrad Understanding Light Slowing in a Medium
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3
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Undergrad Understanding the Creation of Photons by Electrons in Red LEDs
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21
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Graduate Why does refraction occur differently in certain situations?
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15
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Undergrad How does a photon actually carry an image
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18
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High School Are there commercially bought materials to make a laser?
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11
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Graduate What is the role of photons in the weight and force of the universe?
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Undergrad What is this instrument called? - Photoptics
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3
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Undergrad How can I accurately measure irradiance for my UV sanitization device design?
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High School Can Lightning Travel Through a Vacuum?
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Undergrad Why Does a Polarizing Filter Transmit 50% of Unpolarized Light Intensity?
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4
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Graduate What Are the Secrets Behind Photon Behavior and Speed?
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7
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Can lightning be captured in different colors through photography techniques?
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4
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Undergrad What Determines the Transparency of Materials to Light?
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6
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Undergrad Diffraction pattern and Fourier Transform
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Undergrad Polarisation & LCDs: How Does Darkening On Turn On Work?
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Undergrad Understanding the Phenomenon of Colors Combining to Create White Light
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4
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High School Does sound affect light in different mediums?
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19
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High School Is the Inside of the Eye Filled with Oxygen or Something Else?
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High School Create Laser Line Effect Using Prisms and a Torch
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Undergrad Geometric optics - why pinhole bends rays like lens
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12
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Graduate Transmittance of absorbing multilayer thin-films on an absorbing substrate
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Graduate Depolarizing and source linewidths
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Undergrad Can Diffraction Occur with Significantly Narrower Apertures?
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Undergrad Geometric optics - why inverted image from thin lens
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Graduate A Question about Imaging and PSFs
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Mystery of the Microwave Bugs: How Do They Survive?
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High School How long to turn off fluorescent lights?
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Undergrad Can a Raser Amplify Radioactive Rays Like a Laser?
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Graduate Cloaking Devices: New Discoveries & Modifications
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Graduate Speed of force > speed of light.
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Graduate Photon absorbing cloaking device
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Graduate Lambert's Cosine Law: Understanding Diffuse Reflection
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Undergrad I'm new to optics: on lens please
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Undergrad Why Are Only He Atoms Excited in He-Ne Lasers?
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Graduate How do the intensities change when using a polarization beam splitter?
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Graduate Gravity and Light: Questions Explored
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High School Can You Survive Traveling at the Speed of Light?
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Graduate Can light be trapped forever between two perfect mirrors?
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High School Can You See Torch Light in Space?
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High School Does Fire Produce Shadows?
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High School Light a light bulb with no contact?
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Undergrad What Are the Best Resources to Learn About UV Sanitization?
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Graduate Can Gravity Travel Faster Than Light?
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Undergrad Laser Energy Reflection: Understanding Photon Build-Up in a Vacuum
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Undergrad How does a refractometer work?
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Undergrad Radius of curvature experiment
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Undergrad How could an object (not aerodynamic shaped) achieve flight?
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Graduate Superposition: Does EM Radiation Require an EM Field Everywhere?
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Graduate Mathematical shape for a lens with no spherical aberration
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Graduate Understanding the Three Velocities of Light: Phase, Group, and Signal
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High School Two way mirror on the side where you can see through it
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High School Why Shouldn't You Put Metal Pots in a Microwave?
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High School The Mysterious, Impossible Box: Questions & Answers
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Undergrad Light, refelection, transparency, direction?
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Graduate How does laser dissipation in air affect power and intensity?
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Graduate Interferometer Experiment: Rules for Adding Half Wavelength
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Undergrad Can both a photon and it's reflection hit a particle?
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Graduate Light Diffraction: Is Wavelength Affected by Slit Width?
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Graduate Can Fresnel Equations Be Generalized for Arbitrary Polarization of Light?
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High School Gps, Mobile phones microwaves and radiowaves
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Graduate X-Ray Diffraction: Photon-Atom Interaction & De Broglie's Eq.
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Undergrad When does the photon get captured?
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High School Can a Red Laser Create Beautiful Diffraction Patterns with Limited Materials?
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Graduate What are saturable absorbers and how do they impact the behavior of lasers?
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Graduate Does a photon propogate faster than c ?
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Undergrad Reflection of light off 4 90 degree mirrors
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Undergrad Where Can I Find a Tutorial for Simple Optical System Design Using Zemax?
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Graduate Plane Wave Expansion: Solving Issues with Bohren and Huffman
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High School What is the maximum path that lightning can travel?
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Graduate Galilean beam expander and spherical aberration
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Undergrad Distance traveled by X-rays in air
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Undergrad Any experimental evidence of Doppler shift in light?
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Graduate Light Speed Consistency: Puzzling Questions
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High School Fiber Optics & Lasers: Light Usage
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High School What is the physics behind this circular rainbow in the sky?
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Undergrad Do Photons Have Mass? Understanding the Relationship Between Mass and Energy
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Graduate Einzel Lens Operating Principle
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Undergrad The weirdest and most puzzling problem I've ever encountered
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High School Is Light Really Slowing Down or Is It Just More Matter Between Us and the Stars?
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Graduate How do you tell the moving direction of a wave?
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Undergrad Need Help with Michelson Interferometer Setup?
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Graduate What Determines the Natural Value of the Speed of Light?
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Undergrad What Limits the Distance of Reflections in Parallel Mirrors?
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