Optics Forum

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Has the speed of light remained constant throughout history?
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Effect of 3D photons on a 2D universe. Help me understand?
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A question about notation in OPtics
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Ray Type of Bulb Light Emission
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Lens calculation problem (Optics)
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How does circularly polarized light rotate a body?
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Can light exert force on objects?
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How efficient is a microwave oven
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Why could we see a laser hologram?
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Traveling at speed of light, and time.
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Is Simplifying Snell's Law to n1θ1=n2θ2 Valid for Small Angles?
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How Does Microwave Wattage Affect Standing Waves?
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Can Diffraction Effects be Removed with an Interferometer?
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Why don't we emit radio waves
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How X-rays Compress Matter for Nuclear Fusion
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Transmission, reflection, and absorbtion
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What happens to the energy in case of destructive interference ?
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Different ways to measure the speed of light experimentally ?
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Can camera flashes really damage historical sites?
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Total internal reflection mirror?
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Unusual Color Effect of Laser Pointer on Red Plastic: A Scientific Investigation
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Snells Law and refractive index
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Is light really light outside the human brain?
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Magnifying a display without compromising exit pupil
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Can We Physically Detect Radio Waves?
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What causes light to bend when passing the edges of objects?
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How close can 2 coherent photons be?
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Question about waves, maybe diffraction related
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Ultraviolet Curing to Make Metal Stronger
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Understanding the Mirror Formula: Actual Measurements vs Sign Convention
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Is it possible that some galaxies we observe are reflections of our own?
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If something emits visible light
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Why can we see the light from a source from afar, but
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Diffuse Reflection: How is it Computed?
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Optical power lost at a pinhole
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Light, photons, reflection and percentages
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Mirror or Camera: Which is the Truest Reflection of Our Perception?
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Phase change of reflected wave
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Rutherford Scattering: Inverse Relationship Explained
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What is the cause of reflection?
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Why can AM radio waves travel over mountains while FM signals cannot?
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Composition of the sun and spectrum of light
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Why does light travel at the speed it does?
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Detecting single photons - conceptual question
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Faster than the speed of light
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Lens shapes other than conic sections
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Polar molecules like water Spin why?
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Polarization and crystallography
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Can a Radio Wave Camera Be Used to Track Wildlife in the Field?
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Wavelength of photon in a medium
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Why can't waves (light) be in two mediums at the same time?
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Could the speed of light be variable?
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Can Anomalous Dispersion Enhance Resonant Cavities for Solar Cell Applications?
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How does polarization take place by reflection?
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Radius of Photons? - Get Answers Here
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Why Does the Angle of Refraction Change in Borosilicate Glass Experiments?
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Tyndall vs Rayleight Light Scattering
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What is the relationship between antenna tuning and photons emission by antenna?
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Happy and excited beams of light
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Lens that will make the rays parallel to each other
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Why doesn't a biconvex lens cancel itself out and not change the light beam?
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Why does red light travel faster than blue light in glass or water?
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Rear View Mirrors: Objects Closer Than They Appear
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Creating a Converging Lens for Sound Waves at the Exploratorium in San Francisco
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Diffused Sun/Moon Reflection: Why Water Appears as Columns
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Why does light bend when it passes through different mediums?
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Effect of thickness of atmosphere on the incident light on land
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Understanding Rayleigh Scattering: Why do Atoms Scatter Light?
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How do we measure the frequency of light?
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What is the Optimal Camera Distance for Photographing a Mirror Image?
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Strange Optics Ques: photon capture and reprod
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Do Photons Really Possess Mass?
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Why is light reflected off road and water surfaces horizontally polarised?
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Question about travel-time (or time-of-flight)
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Capillary action for non-polar substances?
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Does Carrying an Umbrella Increase Your Chances of Being Struck by Lightning?
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Magnification; What's focal point
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Photons reflecting off mirrors, wheres the flaw?
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About diffraction (conceptual problem)
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Are there any chemical reactions that can generate radio waves?
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Can a Surface be Designed to Reflect Light Horizontally?
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Diffraction & Grating: Uses in Everyday Life
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Squinting at light bulbs, what are those lines?
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Phenomena of reflection of light
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Paraxial Rays: Definition & Diagrams
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Why do we measure the angle of incidence or reflection
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When two Lasers meet what happens
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Is there such thing as infinite magnitude of velocity?
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How Does Bisecting a Lens Affect Its Focal Length?
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How to measure the Intensity of Light?
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Can photons be accelated or do they always travel at one speed (speed of light)?
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Diffraction plane & image plane
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Superposition principle in arbitrary medium
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How come light only reflects off surfaces and not internal planes?
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What is the actual cause of refraction?
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Harnessing Sunlight Indoors for Sustainable Gardening
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Collimate Light from Mercury Arc Bulb for 5cm Circular Beam
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Applying Huygens's principle to light propagation
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Clarification of White Light/Superposition
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Can We Store Lightning Energy?
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