Optics Forum

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Undergrad Can Light Travel Through Vacuum and Be Detected Off Its Path?
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Undergrad Invisibility cloaking using 4 lenses
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Undergrad Laser Pointer Troubleshooting: Solving Incoherence in a Red 650nm <5mW Beam
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Undergrad 1N Force and going near the speed of light?
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Undergrad Question about suborbital flight and ballistic missiles
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Undergrad How do initial conditions affect the symmetry of wave equations?
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Graduate For the Fresnel Equations for TM light why is 1 + r not t?
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Graduate Ti:sapphire: laser propagation
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High School Image formation in concave mirror
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Graduate How many state changes per second could optical computing do
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Undergrad Number of photons in a given space
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Graduate What Do Peaks and Troughs in Light Waves Physically Represent?
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Graduate Explaining Light intensity with EM Field Oscillations?
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Undergrad Correcting results to fit Rutherford's Scattering Formula
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Graduate Time Travel and the Speed of Light: Separating Fact from Fiction
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Undergrad Instrument Line Function of a Spectrometer
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Undergrad Optical Phenomena: Key Elements & Assumptions
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High School How does attenuation happen? Very confused
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Undergrad How does a gamma ray get converted to visible light
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Graduate Why do stronger red lasers not work in a Crookes radiometer?
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Undergrad Is the Indicatrix a Volume Chart or an Ellipsoid for Crystal Optical Properties?
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High School Physics: Are Photons Considered Objects?
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Undergrad Steam punk, Field of view including the eye
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High School Which Rays to Consider for Image Formation via Concave and Convex Lenses?
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High School Order of magnitude calculation
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High School Question about light emissions of fluorescent bulbs
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Graduate Out of phase light/photons, would it be measurable?
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Undergrad Two sheets of glass stick together. Why?
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Graduate What exactly is the detector of an ellipsometer measuring?
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Undergrad What caused a rainbow near the setting sun?
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Undergrad Purpose of knife-edge in Schlieren (optics)
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Undergrad Will this travel faster than light
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Undergrad Interference pattern from a plano-concave lens
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High School Christmas lights: Why in series?
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Undergrad Difference between elastic and coherent scattering
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High School Could church domes be used to project clouds on the floor?
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Graduate About interference, momentum and thrust....
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High School Microwave oven is prevents mobile signal?
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Undergrad Uncovering the Truth: Recording Lightspeed with a Trillion FPS Camera
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Undergrad Question about frequency of light
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Undergrad What is the boundary surface of a collimator?
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Graduate Is it possible to collimate monochromatic light with a taper?
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Undergrad Monochromatic RGB light sources passing through a prism
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High School Do all light waves move at the same speed?
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Undergrad Synchronous Sources and Interference
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High School Can a Box Block UVC Light for Bacteria-Killing Experiment?
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Undergrad Diffraction experience at home
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High School Trying to buy some simple glass double-convex lenses
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Undergrad Making a bolt of lightning travel in a straight direction?
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Undergrad Combing Lasers To Create One Mega Laser
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Undergrad What happens if the angle < Brewster's angle?
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High School What determines the wavelength of light an object reflects?
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Graduate Small Reflective Projector LCD
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Graduate Light intensity independant of frequency and E = hf
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Graduate Question about x-ray, concept confusion
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Undergrad Is the Speed of Light Truly Constant?
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Undergrad Is laser light polarised? In which direction?
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Undergrad Use of prisms vs use of mirrors in periscope
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High School No intensity drop if slit width is negligible in double slit
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Graduate What is known about helical flight paths in bullets?
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High School Time of flight objects in air versus in vacuum
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Undergrad Thin film refractive index determination
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Graduate Using Gamma Ray reflector to reduce mass of Shadow shield
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High School Variable focal length TV / screen
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Graduate Is light ACTUALLY a sinsusoidal wave?
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High School What medium does light move in?
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Graduate Looking for proof of Superpositional Energy Conservation
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Graduate Fermat & Snell: Solving the Derivation Mystery
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Mysteries of the Lightning Rod Underground
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Graduate Bragg Diffraction: Calculate 1st & 2nd Order Angles
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Graduate What is the polarization energy?
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Undergrad Two Diffraction Gratings - Rotation
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Undergrad Can a wave of light activate a force on a physical object?
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Undergrad Where can i buy an ordinary optical collimator
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High School Does a lightning rod also avoid lightning?
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Graduate Superimposing 2 sources of light slightly out of phase
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Undergrad Is Fermat’s principle appicable to a plane wave?
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High School What Makes the Six Colors in Newton's Experiment Special?
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Undergrad Can anyone explain this sun reflection in terms of angles?
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Undergrad Quarter-wave plates and Half-wave plates
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Graduate Circular Waveguide equation help
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Undergrad Huygen's principle in practical sense
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Undergrad Why Does Light Reflect Differently on Leaves in Certain Areas?
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High School Light Speed Q&A: Can Cameras Capture Light?
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High School What is this tool and how is it used to study light?
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High School Where can I find cuvettes with transparent caps?
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Undergrad Why doesn't the frequency change after refraction?
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High School Create Your Own Hologram for Beginners
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Graduate Mirror image inversion in the 4th dimension.
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Undergrad What is the refraction of light and its relevance in Bsc physics?
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Graduate How do the units of polarizability differ between SI and Gaussian systems?
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Graduate Bragg's Law with Refractive Correction
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Graduate Imaging by cylindrical concave mirror
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Undergrad Is it possible to magnify with a focal length of zero?
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High School What is the derivation of this equation: d = t sin θ [ 1 - (n cosθ / n' cosθ)]
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Graduate X-rays produced by Solar Flares/CMEs
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High School Can light generate propulsion?
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High School Can someone explain this projection distortion effect
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Undergrad Basic question about Scattering and understanding colors
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Graduate Intuition for Rayleigh Scattering
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