Optics Forum

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Undergrad 1 light year of mirror reflections?
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Undergrad Polarisation of Light: Reflection, Critical Angle & Total Internal Reflection
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Undergrad How to focus and direct microwaves?
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Undergrad Incoherence of S1 & S2: Explained w/ Interference Pattern
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High School Why Use a Photodetector in Interferometry?
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Undergrad Understanding the Beer-Lambert Law and Its Derivation
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Graduate How Do Polar Coordinates Explain a Bead's Velocity on a Rotating Wheel?
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Graduate Can Low Energy Photons Cause Box Explosions?
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Graduate Optics - Re-aligning P Polarization with Brewster Windows
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Undergrad Understanding the Color Effect of Sharpie Ink on Different Surfaces
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Undergrad Maximum light intensity underwater during seasons?
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Undergrad Solar panels vs reflecting surface?
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Undergrad Hi, how to find the magnitude of a rotating vector?
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Graduate Can a Rotating Coherent Laser Beam Create a Persistent Light Dot for Holography?
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Graduate How Can Light Transmission and Reflection Exceed 100% in an Optics Experiment?
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Graduate Fresnel reflection coefficient for Second Harmonic Generation (SHG)
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Undergrad Drop in power in a directed microwave beam?
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Undergrad Does Destructive Interference Cancel Energy?
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Undergrad Horizontal Noise Stripes in an Image
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Graduate Circularly polarized light through a polarimeter
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Graduate How Can We Measure the Speed of Light Over a Long Distance?
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Undergrad Logarithmic scale for the Laser Intensity.
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Graduate X-ray emission from a klystron tube
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Undergrad How can I correlate the light intensity and energy?
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High School Laser beam in oil/water, why is it easier to see beam in oil
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Undergrad Maximum angle of acceptance - optical fibre
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Graduate Intuitive reasoning for frequency remaining constant during refraction
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High School Why does Lightning create Bright Bands on a Camera?
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High School Why do convex lenses magnify, and why don't concave lenses?
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Graduate Reversed Spot Diagram: Image & Point Source Effects
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Undergrad Where do photons *Actually* come from?
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Undergrad Why my mirror does not reflect converging light?
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Undergrad Did the Michelson Morley Experiment Prove the Existence of Ether?
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High School Why do farther away objects appear smaller
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Graduate Resolution when not diffraction limited
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Graduate Which properties of photons carry info on size,width,height?
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Graduate When I lit a laser ray for 10 seconds from a distant planet
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Undergrad Can illuminance be converted to luminance or vice versa?
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Undergrad How mirror/camera/tv work without human eye like system?
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High School Understanding In-Phase and Definite-Phase Relationships
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Undergrad Energy fighting in combat flight sims
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Graduate Class Making a T.E.A. Laser-- we have questions....
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Graduate Absolute Relativity (who needs virtual photons anyhow?)
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High School Does Atmosphere Dilation Affect Sunlight Travel Time? | Explained
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Graduate Can a Ring Laser Interferometer Measure Earth's Spin and Determine Latitude?
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Graduate Creating a Holographic Projecting Lens: Ideas and Procedures
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Undergrad Change in energy as light passes through air/water
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Undergrad What is the resolution of light?
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Undergrad Why Does Light Penetrate to a Certain Depth?
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Graduate Achieving q-switching through cavity stability manipulation
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Undergrad What´s the optical effect happening in this picture?
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Graduate Penetration depth of a microwave
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Graduate Could the speed of light be different in different universes?
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Graduate Understanding Photon Interference: A Look at Wavelength and Molecule Distance
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High School Are UV Films for Windows Really Effective in Blocking UV Rays?
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Undergrad Is it possible to create artificial lightning?
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Graduate Thick Lens focal length and surface facing the object
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High School Irradiance at a point on a surface
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Undergrad Practical scenario: NIR laser, black light marker and lamp.
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Graduate Infrared Light passing though Atmpshere
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Graduate Do the Relative Permittivity and Refractive Index of Water Match Up?
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Undergrad Regarding the wavevector spread.
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Undergrad Fermat's principle of least time
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Undergrad Blu-Ray Disc: Shorter Wavelength, Bigger Storage?
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Undergrad Experiment Results: Speckle Size Decreasing with Increase in Concentration
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Undergrad White light thru prism: Why aren't separated colors actually mixed?
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Graduate Is interstellar travel impossible due to kinetic energy magnitude?
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Undergrad Why and How of the schuster's method.
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High School Understanding Starlight: White Light, Double Slit Experiment, and Color Emission
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High School Mirror Plane Motor & 5000+ RPM: What Image?
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Graduate Planck time at the speed of light
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High School Can amplifiers boost radio waves for stronger signal?
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Undergrad Multiple Paths in Fermat's Principle: Which One Will Light Choose?
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Undergrad Mass of a Photon: Rest & Moving Mass
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High School Please explain this laser phenomena
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Undergrad Huygens principle introduction
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Undergrad Understanding Fraunhoffer Diffraction: The Role of Lenses Explained
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Graduate Lens aligning various angle of incidence light striking it?
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High School Lighter equals faster acceleration
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Undergrad Understanding the Energy of a Photon: A Closer Look at the Underlying Formula
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Undergrad Any sunlight band pass filter for 400-700nm of EM Spectrum?
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High School Showing light to be a particle question
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Undergrad How does Radiance change with a parabolic reflector?
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High School Found something odd while procrastinating, fan/computer
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High School Limit of Focal Spot Size for Lensing EM Radiation Across Frequencies
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Graduate Distance based opaque to transparent behaviour
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High School Understanding the Effects of Distance on Light Intensity
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Undergrad Is greenhouse interior much cooler if reflective inside?
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Graduate How is Circularly polarized light changed upon refraction?
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Undergrad Is a Photon the Smallest Particle Known?
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Graduate FLP: Derivation of reflection coefficient
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Graduate Photon size and classical fields
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High School Proving to someone the speed of light is real
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Undergrad Reflection vs absorption and emission
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High School Polarization Filters: What are They & Where to Learn More
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Undergrad Why does the two concave mirror illusion looks realistic wh
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Graduate Photonic crystals as metamaterials
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High School Maximizing Telescope Sensitivity: The Importance of Mirror Size
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High School Can light escape the medium when total internal reflection occurs?
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Graduate Are superconductors perfect reflectors?
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