Optics Forum

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Graduate Does light move, or does space and time move past light?
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High School Stopping Light in Air: Myth or Reality?
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High School Can we see radio waves or other invisible waves with our eyes?
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Graduate Phase shift and circular polarization
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Graduate Cause of polarisation due to reflection?
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Graduate Understanding a Generalization of Snell's Law
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Graduate Geometric Optics Approximation - validity
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Undergrad Light propagation in water -- Is the scattering Rayleigh scattering?
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Undergrad Absorbance of a finite waveband
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Undergrad Angle relationships of a blazed diffraction grating
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Graduate Optics Experiment involving transmission through a gel and a sphere
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Undergrad How Black Holes Absorb Light Despite Photons Being Massless
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Undergrad Geometric mean versus arithmetic mean
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Undergrad How to Derive Malus' Law for Two Polarizers Using Integrals?
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Undergrad Refraction of Light Wave: What Causes It?
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Undergrad How to calculate the energy in gamma photons
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Graduate Scattering from lossy medium whose refractive index is unity
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Undergrad Rayleigh Scattering calculation
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Graduate Transmission of blue light through ceramics and surface roughness effects
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Graduate Relative eye safety of infrared and ultraviolet lasers
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Undergrad How does ultraviolet photography (fluorescence) work?
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Undergrad Atmospheric hazing on an infinite plane
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Undergrad Radial Acceleration in Polar/Cylindrical Coordinates
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Undergrad Calculate the Efficiency of a Winston Cone
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Undergrad Why is the number of wavelets in a slit = slit length / lambda
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Graduate Nonlinear Optics: third-order susceptibility
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Graduate What happens to waves with different polarizations in a wire grid polarizer?
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Undergrad Atmospheric Refraction: Temperature, Distance, Object Shape
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Undergrad Fuel cell mass flow rate magnitudes
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Undergrad Do Blue Light Filters Actually Work?
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Graduate Physics of Light/Infrared for Solar Stills Research
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Graduate Intensity of a Gaussian laser beam
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Undergrad A one light-year circuit of christmas lights
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Undergrad How are Photons massless? How can a particle have no Mass?
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Undergrad Average number of photons in a atom at a given temprature
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Graduate Classically communicate information faster then light?
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Undergrad Optics question -- Object and Image on the optical axis....
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Graduate How do microwave plasmas work?
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Graduate Light wavelength transmission through ice
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Graduate Can Gamma Rays Be Artificially Directed?
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Undergrad Fermat's Principle: Is Light Travel Time Min?
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Graduate Do Photons Have Mass and How Do They Interact in LASERs?
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Graduate Can Colder Bodies Send Photons to Hotter Ones?
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High School Does Light Travel Through Fiber Optic Cable Generate EMF?
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Undergrad PMT Sensitivity Explained: Understanding Photomultiplier Tube Sensitivity
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Graduate Mass of Photon: What's the Proper Explanation?
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Undergrad Why is the speed of light what it is?
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Undergrad Formal term for cross-polarization effect
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High School In night vision equipment, how does 'information' transfer?
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Undergrad Can I get different frequencies from He-Ne Laser ?
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Undergrad Can Infrared Photons Enter Nanotubes?
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Graduate Calculate polarization energy over a set of cuboids
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Graduate Why is a state with large number of photons not classical?
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Graduate Destructive interference for distance-specific illumination?
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Graduate Light beam propulsion without lasers?
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Undergrad Physics of colors and our perception
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Graduate Coherence pattern of HeNe laser in interferometer
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Graduate Reflection of only visible (safe) light on moon/mars
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Undergrad Are plane waves actually spherical waves at large distance?
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Undergrad What is the real definition of foot-candle?
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High School How do electromagnetic waves from the sun vary in wavelength?
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Graduate Questions about neutrinos compared to the nature of light
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Undergrad Why do waves diffract, really?
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Graduate Infrared thermometry remote sensing
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Undergrad My Second Post: Change in Magnitude of Normal Force?
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Undergrad Do we "lose" information when viewing objects at a distance?
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Undergrad Wave / particle duality of light
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Graduate Polarization of light using Mueller matrix
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Graduate Uncertainty and the speed of light?
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High School Difference between real and virtual objects? (optics)
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High School Materials that allow IR or UV light to pass through?
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Undergrad Can we use the momentum of light to propagate spacecrafts in space?
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Undergrad On board a laser powered solar sail
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Undergrad Can you ionize metal with photons?
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Undergrad What is the unit of measurement in this X-Ray?
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High School Can Cameras Outperform Human Eyes in Perception?
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High School Have you heard of the mirage effect on the sea?
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Graduate Intensity characterization of laser pulses
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High School How can we visualize the movement of Photons on the water?
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Graduate How to calculate the number of photons
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Graduate Nonlinear Optics - Pockels effect
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Graduate Can the speed of light be constant and absolute?
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Undergrad Why does the sun affect radio wave propagation?
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High School How to state the laws of refraction and apply them to....
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Graduate How to concentrate white light in a very small point?
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High School How does a Ruhmkorf coil produce radio waves?
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Graduate Why is the refractive index for red lower than for blue?
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Undergrad IR camera 1550 nm IR light source
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Graduate Little help interpreting spectral data from an article
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Graduate Interference puzzle - Where does the energy go?
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Graduate The reality of photons (real vs virtual etc)
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Undergrad Light Reflection: Understand How Light Interacts with Materials
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Graduate Is there a limit to how steep the refractive index gradient can be
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Graduate Parabolic shape configuration's effect on photon volume?
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Undergrad Why the Frequency of Light Does Not Change Through a Medium
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High School Isn't a wave what something does and not what something is?
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Graduate Single photon and double slit experiment
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High School Speed of Light x2: Car Travel & Bullets Fired
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Undergrad Michelson interferometer dimensions
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Undergrad Why adding more polarized filters results in more light passing?
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