Optics Forum

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Undergrad Why do some objects reflect light while some let light pass through them?
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Undergrad How to Measure Paper's Reflectivity
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Undergrad Why is the speed of light an exception? (same to all observers)
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Undergrad Light Scattering: Free Electron Explanation
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Undergrad Understanding Light diffraction
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High School Connecting Lasers: 1W vs 2W Effects
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Undergrad Do Light Waves Have Amplitude?
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High School Optic axis of a calcite crystal
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Graduate Collimating Light from a Hg Arc Lamp
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Graduate EM reflection coefficient off a conducting plane
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Strange Particles May Travel Faster Than Light
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Undergrad Why Is the Angle of Incidence Crucial in Understanding Light Refraction?
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Graduate Understanding Mass Speed of Light: Electrons and Protons in LHC Explained
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Undergrad Why the first fringe is the biggest and brightest one?
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High School Refractive index of optical fibre
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High School Why does repeated reflection increase amplitude?
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Undergrad Why must the two slits be at the same distance in the double slit experiment?
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Undergrad Properties of an ondulatory movement
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High School Why does light slow down in denser media?
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High School Questions about Light: Reflection & Spot Shape
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High School Questions About Prisms - Refractive Index & Parallelograms
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Graduate How does spatial coherence affect focusability of laser?
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Undergrad What is luminance and how is it used in optics and vision science?
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Undergrad Optics - Having trouble with a few concepts
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Graduate Energy conservation in destructive interference.
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Graduate Measuring the State of Photons: Determining Mixed & Pure States
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Graduate Kinetic Energy of an object at the speed of light
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Undergrad MIxed and reflected color frequencies.
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Graduate Using Light to Make Processors with Features Smaller than It's Wavelength?
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Undergrad Situations that Require the Accurate Determination of Refractive Index
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Undergrad Optical Design and Simulation Software
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High School Audio signals transferred by a light source
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Undergrad Wavelength sand refractive index
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High School The Mystery of Thin Prism: Angle & Deviation Explained"
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Graduate Some questions about polarization and intensity
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Undergrad Does Light Really Have a Wavelength?
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Graduate Reflected wave extent into media
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Graduate Absorption of Photon: Electron Constituents & Attraction
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Graduate HST-1 moving faster than light?
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Undergrad Improvised Optics Lab Equipment
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Undergrad What Causes Changes in the Wavelength and Velocity of Light During Refraction?
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Undergrad Can Snell's Law Be Proven Mathematically for Sound and Light Refraction?
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Undergrad Understanding Interference in Thin Glass: The Role of Ray 2 and 5 Explained
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Undergrad What does refractive index depend upon?
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Graduate Reflected wave at complex refrective index
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Graduate How to detect the phase of a laser beam directly?
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Graduate What Does the Ratio sin(φ1)/sin(θ4) Reveal About Light Refraction?
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Graduate Cooling in Cosmic Microwave Background
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Undergrad What Causes Radio Stations to Mix and How Does it Affect Listening?
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Undergrad Calc Accuracy: Percent Error Within 5%?
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Graduate Diffraction from Sub-Wavelength Features
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Graduate Spectral width of an optical pulse
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Graduate Why Do Some Diffraction Orders Go Missing?
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Graduate How Does 1J of Energy Propel a 1kg Mass in Space?
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Undergrad What happens if eye lens and objective lens are interchanged in
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Graduate What is an acoustically soft/hard scatterer?
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Undergrad How come I can see the entire face of a distant object.
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Graduate Can Near Light Speed Travel Overcome Time Dilation and Physical Limitations?
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Undergrad Atomic clocks and the speed of light
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Undergrad Building Spectrometer: Signal Level, Footprint & Resolution
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Graduate Achieving speed of light via rotation on an axle?
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High School Physical quantities/ magnitudes
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High School How much light can be captured and stored in a fixed volume?
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Graduate Extremely High Energy Photons?
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Undergrad Why are X-rays absorbed in the atmosphere.
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High School Can you stand on enough concentrated light?
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Undergrad Determining LED light intensity from its radiant power
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High School Photon & Lighting: What Happens After Production?
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Undergrad Newtonian Form of Lens Equation
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High School Can a lightning take the same path multiple times?
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Graduate Light wave interference questions
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Undergrad Light & Gamma Rays: Why Does One Penetrate and Not the Other?
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Undergrad Properties of polarized beam splitters
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Graduate CCD measures intensity prop. to z-component of C-Poynting vector OR |E-field|^2
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High School Reversing polarity on a battery?
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Graduate How much energy can be stored using microwave energy storage?
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High School Why Do Car Headlights Start Bright But Quickly Dim?"
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Undergrad Troubleshooting Laser Instrument Issues
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Graduate Understanding the Use of Quarter-Wave Plates for 3D Cinema
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Graduate Combining Quarter-Wave Plates: Effects & Differences
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High School Left hand and right hand circular polarization
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Graduate Impedance matching and reflection
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Undergrad What Causes Some Substances to Absorb Light?
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Undergrad Do Cars Moving Near Light Speed Appear Faster to Each Other?
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Why is the speed of light limited to a countable number
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High School What would things look like if i was moving as fast as light
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High School Reflection of Wave in Open Pipe
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High School Phase difference and path difference
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High School What is the difference between superposition and interference?
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Condensation in vacuum container
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Undergrad Head on collision between mirror image vehicles
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Undergrad Does light interact with an atomic nucleus
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Lighting a candle, blowing it out and relighting it by lighting the smoke?
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Graduate If light is not affected by time, then why does light cool down over time?
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High School Understanding Parallel Light: Answers to Your Questions
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Undergrad Photons observed on photographic plate - but not in eyes? Why?
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Graduate Divergence in spherical polar coordinates
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Graduate How to determine phase and amplitude after light propagation through a lens?
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High School Why is there a lack of consistency in portrayals of the visible light spectrum?
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Graduate Question related to Optical Waveguides and power
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