Optics Forum

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Does matter exert a Force on Fields (or Light)?
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Understanding the Mathematical Explanation for Fresnel Lenses
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Understanding Rayleigh Scattering and Changing Sky Colors
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Metal in Microwave: Heating Up Water and Spoons?
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Understanding Polarizing Angle: Explained by an Engineering Student
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Polarization Problem: Estimating Voltage Needed to Ionize Hydrogen Atom
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Do car windows and windshields block ultraviolet light?
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What Color Will NIR Laser Goggles Be?
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Light Speed: Distance & Time Explained
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Advantages of Polar Coordinate System & Rotating Unit Vectors
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Reflection of a photon by an atom
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Equation to find the intensity of diffraction patterns: explanations please
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Optic Fiber Project Ideas for Amateur Physics Student
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Is the Speed of Light Really 3000 km/s?
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Is Snell's law incompatible with interface conditions? What went wrong?
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Why does it take thousands of years for light to reach the surface of the Sun?
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Strange Optical Effect: See CD Fully Visible & Ruler Bulging
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Are Photons Vibrations or a Separate Entity in Light Transmission?
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Is a particle beam or laser beam conductive?
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Permeability of copper in the microwave frequency range
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Curl of Polarization in a bar electret
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What can be used to change the direction of the laser beam?
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Ball Lightning Discussions/Anecdotes?
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Detectable wavelengths of light at the surface of the Earth
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Understanding Waveform & Autocorrelation in Pulse Lasers
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Noisy Wave Pattern Between Round Objects Behind a Light
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How does a massless photon impart force?
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Interference Pattern from two coherent light sources
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Speed of the outside of a wheel faster than the speed of light
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Spacecraft path with polar coordinates
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Modes and Q-factor(s) of a random laser
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Create a focused beam angle of LED light using reflection
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Curious optical effect related to light passing through a mesh
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Pinhole Diffraction of a Spherical Wave
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The attractive force of photons on other photons & matter
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Why light slows in transparent media
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Number of interference fringes based on n open slits
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951
Interferometry (testing of optics)
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Laser rangefinder by phase-shift
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10
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How does a laser rangefinder measure distances up to 20 km?
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3
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New Optics Toy: A 'Varicolor' filter
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How does a laser rangefinder work?
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What do these submaxima represent - Interference Pattern
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30
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Focusing of a 2D Parabolic Mirror
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Effects of Lens Element Aberrations on a Fully Corrected Lens Image
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Constructive and destructive interference
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Will Headlights Work If My Car Travels Near the Speed of Light?
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Several questions about the speed of light
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Difference between O and E rays to S and P polarizations
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What Causes Reflection and Transparency in Solid State Physics?
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If photons can't escape a black hole, how come gravitons can?
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What Would Happen if the Sun Suddenly Disappeared?
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What is a 1-dimensional mirror?
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Can light always be treated as a physical object?
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Measuring Wavelength of Photons: Precision & Variation
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Speed of Light when not in a vacuum?
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5
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What makes a light source "brighter"?
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7
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Interference & Diffraction in Double Slit Experiment
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Photon wavelength probability distribution for blackbody
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Phase Shifts and Interference in Reflection: Understanding the Differences
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Diffraction through a sub-wavelength aperture
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Verify definition of circular polarization in Balanis.
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How is a Photon being created?
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3
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Controlling light diffraction angle with a holographic "lens"
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15
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Michelson-Morley Experiment: the importance of the laser position
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6
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How can I find the width of the central diffraction maximum.
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Irradiance from this infrared light source after a diffuser
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Rayleigh criterion when light phase is known
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Light Beam fired 1 AU into space
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Why does it not work to carry a laser and shine it on a light sail?
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13
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Can Electric & Magnetic Fields Coexist?
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18
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Designing a reflection sundial for the southern hemisphere
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Scattering direction and probability
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Are there still open problems in classical wave optics?
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2
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Focusing light with a light sail
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How can the electric field of optical fibers be visualized?
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In what direction does a light wave vibrate?
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Principle of Least Action for optics?
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Explaining Squaring Numbers & Light to a 5-Year-Old
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How to Calculate Radius of Curvature from Thin Film Interference?
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2
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Magnification of an Astronomical Telescope
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Tornado Biggest Lightning Thunder BOOM Explosion EVER
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What is the Fundamental Reason for EMR Diffraction?
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Online lecture about treatise on light by Huygens
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Absolute Zero v. The Speed of Light
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Combine Products of Inertia using Superposition
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Question: What happens to absorbed light?
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Destructive interference in Unpolarised light
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Is My Light Meter Reading in mLux or Lux?
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What is the effect of a Laser on gravity
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Wavefronts: Understanding Wave Optics
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10
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Can Light Experience Doppler-Equivalent Slingshotting Near Massive Bodies?
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The microscopic expl. of how light is slowed in materials
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Can the wavelength of a single photon be measured?
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Perceiving white light from Lightbulb Illumination
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Depth effect in mirror reflections
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24
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Photons and solar wind/plasma interaction?
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2
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Beginning through the Pedrotti optics book -- I have an energy question
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Size resolution limitation on Dynamic Light Scattering
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2
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Why do higher frequency light waves bend more in a prism?
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