Optics Forum

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Optics question - eyes and cameras, and the mythical 50mm lens
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35
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10K
Speed inorder to shift green light to blue light?
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4
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6K
Photon Annihilation, where does the energy go?
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11
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5K
Are photons much older than stars?
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15
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3K
Why is light not visible when it travels.
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8
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3K
Slowing Light Down to Photograhable Speeds?
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5
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3K
What Causes Diffraction According to Huygen's Principle?
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10
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3K
Laser Cutting Machines: What Cuts Steel?
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3
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2K
Increase Speed of Homopolar Motor - Advice & Explanation Needed
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1
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3K
Fresnel Lens Array - Focal Point Question
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1
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4K
Converting Transmission to Absorbance (Optics)
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1
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11K
Can the Speed of Light be Greater than c?
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7
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2K
What happens to polarised light?
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4
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5K
Could gravity have 2 components like a photon
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3
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2K
Refractive index and dispersion (name & usage of eq and conceptual questions)
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1
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5K
Questions regarding light and dark
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5
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2K
Polarising Sound: Restricting to One Direction Underwater
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3
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2K
Just want to see if my understanding of the photon is correct
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12
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3K
Understanding Wave Motion of Light: A Curious Question
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6
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2K
Infinite Reflections: Explaining Mirror Physics
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1
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2K
Destructive interference and Conservation of energy
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10
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6K
Gamma/Radio waves through solids
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7
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4K
Accuracy of Kirchhoff diffraction theory
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6
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5K
White Light Scanning: How Does it Work?
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0
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2K
Electron Interference: Scanning Electron Microscope
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4
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2K
Why is the speed of light in a vacuum considered the ultimate limit?
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3
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2K
Speed of light through moving liquid
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16
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7K
Do photons cause electrons to accelerate in an atomic orbital?
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10
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4K
How Can Spacecraft Travel Faster Than Light?
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9
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3K
Can Refraction and Interference Both Cause Iridescent Effects?
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1
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3K
A thought experiment: Light in a mirrored box?
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18
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24K
Interference Pattern Properties
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16
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5K
Does White Light Exist? (And two possible explanations for black lines)
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4
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Light at Absolute Zero: Answers to Your Questions
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3
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3K
Compact fluorescent light bulb in microwave
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12
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6K
How do we know that light is a wave
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6
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5K
Safe Fluid Flow in Modified Microwaves: How to Protect Yourself?
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1
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2K
Light Absorption Mechanism: Electrons, IR, UV Heating
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4
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5K
The Mystery of Light in a Box: Where Does It Go?
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7
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3K
Understanding Light in a Sheet of Glass
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5
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4K
Fresh water and contact lenses
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5
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5K
Question: Can Sound Waves Produce Light?
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4
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5K
What determines the refractive index of a material?
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2
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6K
Does Light Experience Time Differently Than We Do?
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6
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5K
Where to buy cheap plastic lenses?
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5
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4K
Understanding Light Scattering: The Role of Nitrogen Molecules
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6
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4K
Question about refractive index and momentum
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17
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5K
Can Humans Ever See Beyond the Visible Light Spectrum?
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10
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3K
Why do red light waves bend less when passing through a prism?
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11
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13K
Why photons can't afford more than light speed ?
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5
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2K
Intensity of light vs amplitude
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7
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14K
Does light have a frequency limit?
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34
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17K
Rainbows and refraction of light
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24
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11K
If light does not experience time, why does it take time to get here?
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16
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15K
What Happens When a Photon Collides with a Proton in Glass?
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3
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3K
What Affects the Energy of a Photon?
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5
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3K
Photons Debate: Is There an Authentic Special Case?
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46
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7K
Why Can't We See Our Face in Newspapers & Walls?
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2
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2K
Likelihood of light being absorbed/re-emitted in 50 light years
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5
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4K
What Would Happen if a Photon Was Caught Between Two Colliding Black Holes?
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4
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3K
Why do certain objects reflect certain colors and not others?
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9
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3K
The medium that light travels through is the EM field
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4
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2K
Light Wave/Particle: Newton vs. Hooks
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1
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2K
What is the Intensity of Light from a Cylindrical Source?
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16
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5K
What units does incident light have in UV spectroscopy
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8
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4K
Fluid mechanics : Barometer - slight confusion.
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7
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4K
Why Does the Sky Look Blue? Rayleigh Scattering
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6
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4K
Can a highspeed camera show a laserbeam moving?
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22
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4K
Does a photon experience time?
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21
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6K
Mixing Light: Red+Green=Yellow? QED, Superposition & Photons
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2
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Circular polarization through a linear polarizer
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1
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Can 3-D Interference Patterns Exist in Real Life?
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1
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4K
Is blue shift a potential problem for near light speed travel?
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4
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8K
Interference pattern with some fringes missing
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3
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E-field of a laser pulse and Intensity
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1
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2K
Why Doesn't My Homemade Nitrogen Tube Light Up in the Microwave?
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3
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2K
Light: Speed and Sight Dilemma
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3
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One has to wonder about photon interaction, and when to think of them
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3
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Travel back in time, with the help of light?
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7
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3K
About light interacting with matter
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8
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First order fringes being reflected back to the 0 order
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3
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2K
Fiber Optic Illumination System Research: Calculating Power & Length
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2
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What Causes Electrons to Emit Both Waves and Particles?
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15
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Other Special Speeds? (than light)
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21
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What does a light 'filter' do?
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3
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9K
Single slit diffraction minima formula misunderstanding
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2
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How long can a light ray travel
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4
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Radio Waves & Interaction with Matter
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2
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Near ballistic light/photon interference
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4
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Optics: Soap Film and Other Things
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6
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2K
Light seems to bend around objects but why?
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19
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13K
Destructive Interference and the Conservation of Energy
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6
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6K
Wavefront Simulation using Geometry Optics and Physical Optics
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1
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Light Speed in Atmosphere: Does It Regain Energy? | Explained
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11
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3K
Why Does Time Seem to Slow Down in High-Stress Situations?
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9
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Is Light a Wave or a Series of Pulses?
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12
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4K
Can Adding a Lens to a Small Solar Dish Increase Its Heat Output?
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3
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2K
What Happens to Starlight When Traveling Faster Than Light?
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9
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Visibility of IR light from remote controls
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2
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2K
Comparing Atomic Gas and Semiconductor Lasers
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4
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2K

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