Optics Forum

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Undergrad What is phase difference and how to visualize it?
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Undergrad Interaction of light with a shockwave
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Undergrad What is the need to find the speed of light ?
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Undergrad What is the role of focal lengths in ray diagrams for telescopes?
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Graduate Destructive interference at a surface
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Undergrad Can light accelerate in vacuum?
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Undergrad Is starlight a TEM00 gaussian beam or plane wave?
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Undergrad Why does a Lever arm magnify force?
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High School What will happen -- Mirrors on the Moon to illunimate the Earth....
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Undergrad Why should i=e for minimum deviation in a triangular prism?
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Graduate Question about how we see materials and absorption
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Undergrad How does a banana change the color of light?
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Graduate How does a Resonator enhance coherence? (LASER)
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Undergrad Why Does a Single Polarizer Reduce Light Intensity by Half?
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Graduate Understanding Jones Matrixes for Linear Polarization
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Undergrad Observing wavelength at an angle
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Graduate Damped vs Undamped Driven Springs and superposition?
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Graduate Is P-Polarization Essential for Effective Laser Cutting on Target Surfaces?
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High School Burnout of 6300 Lumen Light Bulb: Why?
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Graduate Radiant power of a series of light waves
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High School Uncovering the Mystery of Curving Rainbows: Nature vs. Lab Experiments
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High School What is lightning proportional to?
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Undergrad Why Does Light Change Direction When Passing Through a Lens?
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High School Why Infrared Light Can't Travel Easily Through Air
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Graduate Fraunhofer Lines: Absorption & Re-emission in Solar Atmosphere
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Graduate Average number of photons in a cubic meter
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Graduate How hot does Gaseous H2O need to be to emit IR Photons?
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Graduate CCD Size & Resolution: Trade-Off Explained
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Graduate Can a light ray be redshifted so that it contains no info
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Undergrad Is this wave interference? Sound mixing problem.
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Graduate Why Does Light Intensity Decrease with x^4 in 2D Fraunhofer Diffraction?
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Graduate Stimulated Emission: Is this how we see images?
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Undergrad How Does a Michelson Interferometer Measure the Thickness of a Piece of Plastic?
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Undergrad Question about index of refraction
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Undergrad Reflective And Transparent 3D material?
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Graduate Light reflected 90° out of phase, not 180°
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Undergrad How is light affected by the gravity of a black hole?
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Graduate Are diffraction patterns additive?
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Undergrad Why Does My Snell's Law Demonstration Fail Using a Linear Function Approach?
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Graduate How Do Lenses Exhibit Fourier Transforming Properties in Optics?
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Undergrad Optical lasers to photograph space
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Graduate Fourier optics with concave (diverging) lenses
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Graduate Visual Fire: An Analysis of the Greek Belief in Eye Emission and Its Flaws
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High School Why brown sunglasses filter blue light?
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Graduate Understanding the Effects of Laser Interaction with Ions in Doped Fibers
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Graduate Optics: Center of Fizeau Fringe? Michelson Interferometer
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Graduate Phase plus Antiphase radio waves
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Undergrad Can refractive index of a material be less than unity?
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Undergrad Confusion in Doppler shift equation?
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High School How does light travel faster in optically rarer medium?
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Undergrad Optics : interference and diffraction
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Undergrad Why is a laser's focus limited by diffraction?
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High School What happens at the boundary with light refraction?
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Graduate Can Slowing Light Lead to Revolutionary Advances in Science?
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High School What is the best way to measure the sensitivity of photosensors?
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Undergrad Can Faster-than-Light Travel Ever Be Possible?
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High School Atmospheric Optics: Moon 22° Halo & Paraselenic Circle
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Undergrad Finding Degree of Linear Polarization
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Undergrad Fine & light particels dropped down in vacuum
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Graduate Michelson Interferometer ring contraction
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High School Can We Reduce the Speed of Light?
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Graduate Fresnel zone and reflection of light on surfaces
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Graduate Diffraction of Light with Moving Slit
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Undergrad Mechanically, what does light intensity mean?
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Graduate Why do photons behave differently than particles in scattering processes?
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Graduate Solar Sail/ Mirror Redshift & Blueshift
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Undergrad Polarized Glasses plus Windshield Tint = Rainbows
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Graduate Gaussian Beam Focusing: Find A(0) at Beam Waist
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Undergrad Why is diffused light captured through V-shaped grooves?
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Undergrad How can we create an image at infinity using a converging lens?
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Graduate What causes the photon to move at different frequencies?
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Undergrad What causes the green penumbra in this picture?
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Graduate Interference requires countable wavefields
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Graduate Mass increase due to received photon
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Undergrad I dont understand homopolar motors
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Graduate Question about Michelson-Morley interferometer
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Undergrad Destructive Interference of 2 Lasers?
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Undergrad Laser triangulation / Range finder
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High School Finding a Class I Laser Pointer for a Science Fair Experiment
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Graduate Exact solutions for reflectance, transmittance, absorption?
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Graduate Seeing Around Corners - Daniele Faccio & Heriot-Watt Univ.
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Graduate Acceleration in Plance Polar Coordinates
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Graduate Relation between cross section, scattering angle and KE?
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Graduate What is the maximum amount of light that can fit inside a mirrored sphere?
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Undergrad Reflection and absorption of UV light
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Graduate Two slit diffraction and energy conservation
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High School Can you measure the amplitude of a specific light wave?
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Graduate How to calculate birefringence in lithium niobate LiNbO3
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Undergrad Question about sound absorption/reflection
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High School (Question) Monochromatic light on refraction
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Graduate Question regarding published value for physical constant re photon density
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Graduate Why don't we see interference in thick films?
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High School What are radio waves and cosmic waves made of?
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Undergrad Why Don't Spherical Waves Interfere According to Huygens Principle?
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High School Why Do Tiny Objects Appear Brighter When Backlit?
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Graduate Dopplershift, using changing optical length
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Graduate Time dependent optical path length vs coherence
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Undergrad General term for splitting of light into constituents
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Graduate What is the Jones Matrix of a mirror at an angle?
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Undergrad What Flexible Opaque Black Material is Best for Light Shrouding?
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