Optics Forum

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Undergrad Quetelet rings on LCD displays?
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Undergrad Constructive interference of harmonic electromagnetic waves
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What Causes the Colorful Effects in Polarised Light Waves?
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Homopolar motor teaches about the Lorenz Force
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Undergrad Do materials have a refractive index for radio waves?
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Undergrad Lens angle of coverage/image circle
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High School Apparent Depth - What remains constant?
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Diffraction of RF - how is it affected by frequency?
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Undergrad Question about polarization of light by scattering in the atmosphere
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Undergrad Could the Sun burn an image sensor of a star tracker in space?
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Undergrad Russia Claims Laser Weapon Can Destroy Drones: Is it Possible?
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Graduate Diffraction of spherical wave by plane grating
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Graduate Thought experiments suggest problem with published work
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High School Intuitive, conceptual understanding of holography
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Undergrad Polarizing filter synthesis and dynamics
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Can you trap light indefinitely?
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Undergrad Find the interference function for different emission modes
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High School A variation on the Fresnel Spot experiment
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High School Number of fringes in a 2-slit diffraction pattern
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Collimating a laser beam with a fixed focal point?
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Undergrad Interference - two waves of different frequencies - beat velocity
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Undergrad What does a "phase reversal" really do?
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Undergrad Finding focal length of the lens using "u-v" method
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Undergrad Experimental demonstration of an absorption spectrum
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High School How Can You Safely Observe Bright Light Sources with a DIY Spectroscope?
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Graduate A question about photolithography (optical lithography)?
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Is there any smart material that gets lighter/heavier?
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5K
Find the Best Zemax Textbook for Professional Optical Engineers
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High School Fermat's principle and refraction -- Possible misunderstanding
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Phase lag of light in materials
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Does Light Have a Measurable Density?
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High School Is light breaking its own speed limit when cornering?
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High School Why does light diffract into only seven colours?
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Undergrad Collimating a fibre-coupled LED light source
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Undergrad On 'A Quarter Waveplate (QWP) rotated between 2 Polarisers'
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Graduate How is phase velocity related to deflection angle?
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Undergrad Do my parabolic mirrors need to be really shiny to reflect infrared?
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Undergrad How does the double-slit pattern change depending on the slits?
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High School Wavelength of a laser beam emerging from a prism
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Does light passed through two window screens get polarized?
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Undergrad Curious formula for elliptical polarisation
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What is the physical dimension of transduction coefficient in photonics?
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Graduate Reflectivity with gradient in refractive index
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Undergrad Calculating Intensity in Single Slit Diffraction Experiments
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Undergrad Aberration in Lenses: Formula & Relation Explained
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Undergrad Could a Gaussian beam be described as parallel at a large distance?
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Undergrad Interference and conservation of energy in a resonator
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Undergrad Spherical aberration in Biconvex and Plano Convex lenses
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Data storage using microtubules?
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High School Why do reflections in water sometimes appear different from what we see?
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Undergrad The reflection of the sunset on the water is redder--Why?
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High School Is there a material that allows visible light and UV light to pass through?
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Undergrad How to "think" of a polarizer in matrix representation?
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Undergrad Correct Formula for "No Fringe Condition" (Michelson Interferometer)
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Undergrad Fresnel equations and conservation of energy (phase shifts)
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Undergrad Umbrella fabric and diffraction pattern
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Undergrad Shorten the lens distance while having same focal length?
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Graduate Magnifying diffraction patterns and real images
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Graduate Optimum profile of light pipe exit for narrow beam angle
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Graduate Imperfectly Phase-Modulated Light / Residual Amplitude Modulation
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Graduate Weird pattern for a laser beam spot
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Undergrad Single-slit diffraction experiment and the conservation of energy
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High School The Redness of Red: fact or fiction?
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Is classical Snell's law with a moving medium solvable?
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Undergrad Feynman's Vol 1 Lecture 26 Principle of Least Time (help with Figure)
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Undergrad How to make the best collimator using a system of lenses?
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Doppler Effect -- How fast would you need to go for a red light to appear green?
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Undergrad Simulating Star Images for Star Tracker Testing
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Undergrad How Can One Derive the Diffraction Pattern Formula from a 1D Aperture?
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How to know what m value to plug into thin film interference equations
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Why do rays of light from the Sun appear to be angled?
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Undergrad Compound Microscope System: Magnification Power Explained
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Undergrad What is really happening in collimation of rays?
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High School How does polarisation in nature work?
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Undergrad What Lens to Put In Front of an Complex Lens to Push Focal Plane Back?
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High School Why we use spherical mirrors instead of parabolic mirrors?
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Light Transmission Measurements: What Else Can You Find?
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In optics what do Tp and Ts stand for and what are they?
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Did Planck think the light emitted from black bodies to be quantised?
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Mirror coating and BSDF measurement costs?
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Earth's Rotation & Global Agriculture: Impact & Possibilities
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Polar Ice Caps and the Earth's Speed of Rotation
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Fluorescence of a laser vs its pulse duration
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180 degree phase shift of reflected light
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Measuring the speed of light in a straight line
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Could the Sky Be Green Under Different Atmospheric Conditions?
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How to model light from a star?
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Position of the principal points of a telephoto lens system
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Connect: Coupling Light from 2 LEDs into a Single Fiber
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Can a continous wave laser be converted to a more powerful pulsed laser?
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Optics question: Looking at mirrors from parallel to the surface
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How to estimate the interaction time of Raman scattering?
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Crosstalk Algorithm - Optical system
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Optics Equations - to reduce height
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Calculating distance between lux meter and light source
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Optical versus digital reflections
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Mirrors spontaneously cracking
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Virtual and real image with concave mirror at 45 degrees
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RF transmitter inside a metal enclosure, re. reflections
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Interferometer delay & line light spreading
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