Optics Forum

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Can You See Torch Light in Space?
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Light a light bulb with no contact?
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What Are the Best Resources to Learn About UV Sanitization?
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Can Gravity Travel Faster Than Light?
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Laser Energy Reflection: Understanding Photon Build-Up in a Vacuum
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How does a refractometer work?
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How could an object (not aerodynamic shaped) achieve flight?
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Superposition: Does EM Radiation Require an EM Field Everywhere?
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Mathematical shape for a lens with no spherical aberration
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Understanding the Three Velocities of Light: Phase, Group, and Signal
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Two way mirror on the side where you can see through it
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Why Shouldn't You Put Metal Pots in a Microwave?
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The Mysterious, Impossible Box: Questions & Answers
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Light, refelection, transparency, direction?
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How does laser dissipation in air affect power and intensity?
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Can both a photon and it's reflection hit a particle?
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Light Diffraction: Is Wavelength Affected by Slit Width?
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Gps, Mobile phones microwaves and radiowaves
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X-Ray Diffraction: Photon-Atom Interaction & De Broglie's Eq.
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When does the photon get captured?
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Can a Red Laser Create Beautiful Diffraction Patterns with Limited Materials?
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What are saturable absorbers and how do they impact the behavior of lasers?
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3
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Does a photon propogate faster than c ?
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Reflection of light off 4 90 degree mirrors
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Where Can I Find a Tutorial for Simple Optical System Design Using Zemax?
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What is the maximum path that lightning can travel?
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Distance traveled by X-rays in air
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Any experimental evidence of Doppler shift in light?
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Light Speed Consistency: Puzzling Questions
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Fiber Optics & Lasers: Light Usage
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Do Photons Have Mass? Understanding the Relationship Between Mass and Energy
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Einzel Lens Operating Principle
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Is Light Really Slowing Down or Is It Just More Matter Between Us and the Stars?
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What Limits the Distance of Reflections in Parallel Mirrors?
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Discover the True Magnification of Your Magnifying Glass: A Complete Guide
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Does Light Really Slow Down When Passing Through a Medium?
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Burning wood with a magnifying glass
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Fourier Analysis's relation to diffraction
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How do non planar waves reflect?
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Making negative refraction with positive index material
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How Does the Size of Colors in the Visible Spectrum Relate to Their Intensity?
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What Governs the Speed of Light Itself?
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Altering Images for Corrective Optics: Details Appreciated
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Discovering the True Magnification of Your Magnifying Glass: Tips and Tricks
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Can the Doppler Effect Explain Redshift in Light?
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How does the f-number of camera lenses affect image area?
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Sigma Polarisation: Learn What it is & How It's Defined
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Why light fades over distance?
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Are there particle's or masses that travel faster than light?
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A question about the polarization due to reflection
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Refraction through Muliple media
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Fiber optic based beam splitter
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Method for determining the difference between two similar optical wavelengths
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Reflection with a complex material
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Debating Wave-Particle Duality of Light
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How Does Electron Behavior Influence Light Reflection in Metals?
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Refraction vs Frequency Question
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Please Explain Me Refraction of light
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Stopping light, playing with it, then releasing it.
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Why is the rest mass of photons 0?
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Optimizing Beam Size for Increased Diffraction Efficiency
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How can I project images onto a mirror for a painting project?
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Thin Lenses: Lens Makers' Equation Proved
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Optics Help With LED Foglights
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Bending a laser beam's cross section possible?
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Fraunhofer diffraction and Fourier transform
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Why does a PWM light dimmer actually work?
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Focal length of concave lens experiment
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Diffusion of laser light for measuring laser power
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How do we know the maximum speed of light?
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Measuring laser output with Lux meter
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Does ball pen emit laser beam?
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Infra Red Light: How Electron Movement Creates NIR
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Understanding the Orientation of Light Waves: Electro vs. Magnetic Aspects"
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Can Scotch Tape Really Produce X-rays?
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Directly measure frequency of light source
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Mirrors & Prisms: Reflecting Wavelengths
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Why Does an Object Appear Larger Underwater?
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6
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Why can i see hidden image with a polarized spec?
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Polarized light filtering question.
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Solar laser (for the lack of abetter word)
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Experimental Optics: Solving Challenges with Mach-Zhender & Fibers
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What Does the 4a Angle Mean in Light Trails?
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What Damage Can Infrared Rays, Radar Waves, FM Waves, etc. Do To The Body?
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How Do Lasers Ensure Photons Travel in the Same Direction?
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Huygens principle and single slit diffraction
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Laser Reflection: Why Does it Appear Speckled?
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Confusion about Homogenous Broadening in Lasers
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How do light dependent resistors work with photons and electrons?
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Enhancing Light: Application for Energy Conservation?
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Speed of light in pure Hydrogen
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Understanding Ray of Light: What is it?
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Right handed vs Left handed circular polarization
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Refraction - what's happening for real
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Challenges in Focusing X-Rays with Lenses
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Uncertainty of the speed of light in vacuum
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Are all photons the same or do they have different properties?
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Expansion of polarized plane waves into spherical harmonics,
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Mirror Alignment: Keck Telescope Instrument Accuracy
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Snell's Law Variation: Expressing with Cosines
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