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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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I Do materials have a refractive index for radio waves?
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5
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I Lens angle of coverage/image circle
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5
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B Apparent Depth - What remains constant?
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5
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Diffraction of RF - how is it affected by frequency?
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I Question about polarization of light by scattering in the atmosphere
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I Could the Sun burn an image sensor of a star tracker in space?
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I Russia Claims Laser Weapon Can Destroy Drones: Is it Possible?
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A Diffraction of spherical wave by plane grating
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A Thought experiments suggest problem with published work
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B Intuitive, conceptual understanding of holography
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3
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I Polarizing filter synthesis and dynamics
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4
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Can you trap light indefinitely?
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37
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I Find the interference function for different emission modes
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B A variation on the Fresnel Spot experiment
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36
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B Number of fringes in a 2-slit diffraction pattern
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6
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Collimating a laser beam with a fixed focal point?
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9
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I Interference - two waves of different frequencies - beat velocity
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4
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I What does a "phase reversal" really do?
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3
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I Finding focal length of the lens using "u-v" method
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8
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I Experimental demonstration of an absorption spectrum
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7
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B How Can You Safely Observe Bright Light Sources with a DIY Spectroscope?
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3
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A A question about photolithography (optical lithography)?
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4
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Is there any smart material that gets lighter/heavier?
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10
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Find the Best Zemax Textbook for Professional Optical Engineers
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2
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B Fermat's principle and refraction -- Possible misunderstanding
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42
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Phase lag of light in materials
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8
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Does Light Have a Measurable Density?
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52
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B Is light breaking its own speed limit when cornering?
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25
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B Why does light diffract into only seven colours?
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I Collimating a fibre-coupled LED light source
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I On 'A Quarter Waveplate (QWP) rotated between 2 Polarisers'
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A How is phase velocity related to deflection angle?
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I Do my parabolic mirrors need to be really shiny to reflect infrared?
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3
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I How does the double-slit pattern change depending on the slits?
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30
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B 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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8
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I Curious formula for elliptical polarisation
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What is the physical dimension of transduction coefficient in photonics?
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2
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A Reflectivity with gradient in refractive index
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I Calculating Intensity in Single Slit Diffraction Experiments
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17
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I Aberration in Lenses: Formula & Relation Explained
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7
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I Could a Gaussian beam be described as parallel at a large distance?
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3
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I Interference and conservation of energy in a resonator
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28
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I Spherical aberration in Biconvex and Plano Convex lenses
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Data storage using microtubules?
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2
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B Why do reflections in water sometimes appear different from what we see?
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15
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I The reflection of the sunset on the water is redder--Why?
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B Is there a material that allows visible light and UV light to pass through?
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12
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I How to "think" of a polarizer in matrix representation?
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3
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I Correct Formula for "No Fringe Condition" (Michelson Interferometer)
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I Fresnel equations and conservation of energy (phase shifts)
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8
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I Umbrella fabric and diffraction pattern
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2
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I Shorten the lens distance while having same focal length?
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13
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A Magnifying diffraction patterns and real images
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13
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A Optimum profile of light pipe exit for narrow beam angle
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16
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A Imperfectly Phase-Modulated Light / Residual Amplitude Modulation
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2
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A Weird pattern for a laser beam spot
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9
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I Single-slit diffraction experiment and the conservation of energy
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20
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B The Redness of Red: fact or fiction?
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3
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Is classical Snell's law with a moving medium solvable?
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9
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I Feynman's Vol 1 Lecture 26 Principle of Least Time (help with Figure)
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2
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I How to make the best collimator using a system of lenses?
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4
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Doppler Effect -- How fast would you need to go for a red light to appear green?
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17
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I Simulating Star Images for Star Tracker Testing
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3
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I How Can One Derive the Diffraction Pattern Formula from a 1D Aperture?
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2
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How to know what m value to plug into thin film interference equations
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3
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Why do rays of light from the Sun appear to be angled?
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49
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I Compound Microscope System: Magnification Power Explained
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5
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I What is really happening in collimation of rays?
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7
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B How does polarisation in nature work?
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4
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I What Lens to Put In Front of an Complex Lens to Push Focal Plane Back?
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2
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B Why we use spherical mirrors instead of parabolic mirrors?
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18
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Light Transmission Measurements: What Else Can You Find?
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15
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In optics what do Tp and Ts stand for and what are they?
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3
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Did Planck think the light emitted from black bodies to be quantised?
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9
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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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3
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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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1
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180 degree phase shift of reflected light
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2
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Measuring the speed of light in a straight line
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19
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Could the Sky Be Green Under Different Atmospheric Conditions?
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7
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How to model light from a star?
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8
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Position of the principal points of a telephoto lens system
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3
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Connect: Coupling Light from 2 LEDs into a Single Fiber
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2
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Can a continous wave laser be converted to a more powerful pulsed laser?
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23
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Optics question: Looking at mirrors from parallel to the surface
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6
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How to estimate the interaction time of Raman scattering?
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1
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776
Crosstalk Algorithm - Optical system
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12
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Optics Equations - to reduce height
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5
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Calculating distance between lux meter and light source
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2
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Optical versus digital reflections
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13
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Mirrors spontaneously cracking
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8
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Virtual and real image with concave mirror at 45 degrees
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4
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RF transmitter inside a metal enclosure, re. reflections
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32
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Interferometer delay & line light spreading
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2
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Mirror box with 1 candela of luminous intensity light source
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72
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Power inside a microwave oven due to reflections
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15
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