Optics Forum

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High School How many energy requires to increase 1℃ of 1 liter of water using MICROWAVE?
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High School Is the eye more sensitive to intermittent light/flashlight?
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Graduate Mass, Light Speed, and the Mystery of Photons Explained
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Graduate What Happens When Two Identical Photons Travel Parallel in a Vacuum?
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Undergrad Achromatic prism: Why subtract both angles of deflection?
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Graduate Condition for circular-wire polarizer to transmit no light
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Undergrad Weird Lamp Effect: Investigating the Mystery of Fringes
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Undergrad Why do signals to tv aerials need to be polarised?
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Graduate Where do antireflective coatings reflect light?
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Graduate Does a Single Metal Stripe Reflect Polarized Light at the Angle of Incidence?
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Undergrad How well can we 'see' at different wavelengths?
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Graduate Is this image of a polarizer misleading?
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Graduate Faster than light: Instantaneous lever
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High School Is laser beam visible in vacuum?
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Graduate Lift coefficient of rocket at vertical flight
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Undergrad Is it possible to see objects at 600m distance in infrared
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Undergrad Rayleigh Scattering and linear polarization
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Undergrad Width of Spectrum produced by a prism?
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Graduate How to calculate transmissivity of a set of reflective foils
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Undergrad Amplitudes in a Michelson interferometer
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Graduate Jones vectors for circular polarization
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High School Combustion Emit Light: Reasons & Benefits
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Graduate Rectilinear propagation of light
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Undergrad Optics: How would you determine wavelength?
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Graduate Estimating the FOV of a thin sliced plano-convex cylindrical lens
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Graduate Reasoning for photon having no mass
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Graduate Why does polarizability have units of volume?
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Undergrad Trying to understand diffraction
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Graduate PDLC film or glass for optical shutters or shutter glasses
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Undergrad How does the diffraction grating in Canadian currency work?
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Undergrad Laser pulse: spectral width vs time
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Graduate Question about superposition....
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Undergrad Incoherent Waves: Interference Possible?
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Graduate What is the correct formula for refraction at an interface between two media?
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Graduate Birefringence in in uniaxial optical media and Snell's law
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Undergrad About a concave mirror with a large focal length (1000mm)
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Graduate Huygens-Fresnel principle of diffraction
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High School Diffraction Help: Is This Diffraction?
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Graduate Why is the photon's mass zero in classical equations for light?
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Graduate Is the Photon Truly Massless? Examining Einstein's Law of Relative Mass
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The Homopolar Generator: An Analytical Example - Comments
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Graduate Abbe theory: diffraction pattern to primary image
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Undergrad Are there any units of measurement between 10^3 and 10^6 in the metric system?
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High School Reflected rings from the chair leg
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High School Why does cold air seem to optically zoom in far-away objects?
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Undergrad Measurement of the Speed of light
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Undergrad How can we melt ice in a microwave efficiently?
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Undergrad More slits, farther maxima of interference patterns, why?
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Graduate Interference fringes in Absorption spectra
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Undergrad All-fiber Mach-Zehnder interferometer
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High School Device with which I can measure the frequency of light
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Graduate Blue Light from a Blackbody Radiator
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Graduate The validity of ray optics in telescopes
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Graduate Single Slit Diffraction and Interference Maxima
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Undergrad What causes disturbance on my phone camera?
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Undergrad What is meant by "low frequencies"? (EM skin depth question)
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Graduate Direct Modulation and Photon Lifetime - Laser
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Undergrad What Causes Equal Interference Amplitudes in Light Diffraction Patterns?
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Graduate Creating Coherent Light from UV LEDs and Pinhole Aperture
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High School Are the Sun's rays reaching us always parallel?
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Undergrad Overview of General Fresnel Equations + Complex IORs
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Undergrad Single Slit and Diffraction Grating Formulas
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High School The relation between photons and waves
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Graduate How Is the Minimum Bend Radius of a Fiber Optic Cable Determined?
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High School Objects get smaller as they become more distant
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Undergrad Microwave Oven: Why Are Grid Holes So Small?
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Undergrad Experimental Demonstration of the Raman - Nath Effect
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Graduate Can Quantum Laser Sintering Revolutionize 3D Printing?
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Undergrad Image if a mirror is placed at the focal distance of a biconvex lens
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Graduate Deriving Polar Coordinates Without Cartesian System
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Graduate Is a Pin-Bar TEA Laser the Key to High-Pressure CO2 Laser Success?
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Undergrad The crossed ladder problem and optics mirror/lens equation
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Undergrad Could lightning be creating antimatter in our atmosphere?
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High School Distortions in time when going near light speed
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Graduate Does black hole stop light or time?
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Undergrad Methods of Trapping Laser Light
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Undergrad Is this book correct regarding waves in even dimensions?
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Graduate Harvard Scientists Create New States of Light
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Undergrad Diffraction and gravitational lensing
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Graduate Phase/group refractive index and reflection
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Undergrad Seeing more than the visible light spectrum
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Undergrad What Makes Light and Color Unique in Our Perception?
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Graduate How can X-ray energy transitions be identified?
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Undergrad Air Breakdown With 980nm Laser: 1microsec/250mW
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High School "Mysterious" beamsplitter cube
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Undergrad Discover the Fascinating Fresnel and Arago Spot Experiments in Belgium
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Graduate Calculating how many Joules are required to make a photon
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Undergrad Photon Detection: Learn About Interaction, Detection & Angles
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Graduate Does attenuation affect subsequent interference?
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High School How can this interesting set of mirrors be constructed?
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Graduate Laser Crystals -- effects of crystal size
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Graduate Laser Question - Axial Modes & Gain Saturation
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Graduate Determining which energy level transfers cause peaks in x-ray spectra
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Undergrad Why Isn't My OLED Screen Image at Infinity in My HUD Setup?
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Undergrad Explore New Business Fields for Light Sensitive Sensors
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Undergrad Measuring Thickness and Refractive Index with Fourier Domain OCT
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Graduate Single Ray of Light: Visible from All Angles?
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Undergrad Explore Polarized Light: Tilted Polarizer Effects
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Undergrad Optics Lab Project Holographic Weapon Sight
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Undergrad Refraction Convergence and Amplitude change- Ocean waves
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