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Why Can't You See Your Reflection on Notebook Paper? The Science Behind It
Oct 9, 2007
Replies
4
Views
3K
Speed of Light = 12000 Lunar Orbits/Earth Day ?
Oct 8, 2007
Replies
4
Views
8K
Materials that produce Diffuse Acoustic Reflections
Oct 4, 2007
Replies
3
Views
4K
What is the Relation Between Velocity and Complex Refractive Index?
Oct 3, 2007
Replies
9
Views
7K
Where is the energy when two photons superimpose?
Oct 1, 2007
Replies
7
Views
4K
Sending InfraRed Signal to RS 232: Circuit Requirements
Sep 29, 2007
Replies
2
Views
4K
Refraction of Light: Energy Source Puzzle
Sep 26, 2007
Replies
1
Views
3K
Light through difrent substances
Sep 24, 2007
Replies
6
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4K
Polarization Ellipse: Understanding 2*Psi Angle
Sep 23, 2007
Replies
1
Views
5K
Why Does Passing Current Heat Wolfram Filament in Light Bulb?
Sep 22, 2007
Replies
9
Views
3K
Can anyone explain the unusual energy losses in my UV-laser mirror setup?
Sep 19, 2007
Replies
8
Views
4K
Difference between flame and light
Sep 18, 2007
Replies
1
Views
6K
Why does the sum of incoherent light sources result in non-zero intensity?
Sep 18, 2007
Replies
3
Views
9K
How Much Oxygen Is Needed for Light Bulb Filament Oxidation in a Fire?
Sep 17, 2007
Replies
1
Views
4K
How does water vapor affect the expansion of butane in a lighter?
Sep 17, 2007
Replies
7
Views
8K
Speed of Light: Can We Go Faster?
Sep 16, 2007
Replies
11
Views
2K
Optics-Interferences in light's wave
Sep 14, 2007
Replies
3
Views
2K
Is Fluorescent Lighting Polarized?
Sep 14, 2007
Replies
2
Views
8K
Is Light Considered Matter in Physics?
Sep 14, 2007
Replies
29
Views
90K
Can Light Particles Propel Spacecraft to the Speed of Light?
Sep 13, 2007
Replies
12
Views
3K
How do I create a ray diagram for refraction using a beaker and pencil?
Sep 13, 2007
Replies
2
Views
7K
Superposition of two waves and infinitely many waves?
Sep 11, 2007
Replies
2
Views
5K
Photons as a wave traveling in a vacuum
Sep 8, 2007
Replies
4
Views
4K
Understanding the Definition of a Photon: Debunking Common Misconceptions
Sep 6, 2007
Replies
3
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5K
Speed of light and particle acceleration
Sep 6, 2007
Replies
3
Views
2K
Why do fringes appear sharper with more slits in multiple slit diffraction?
Sep 5, 2007
Replies
2
Views
5K
Glass refractive index vs wavelength, exceptions?
Sep 3, 2007
Replies
2
Views
7K
Excitation and Polarization of Light
Aug 31, 2007
Replies
3
Views
2K
Fresnel lens with focusing light
Aug 31, 2007
Replies
4
Views
12K
What Is Reflection & How Does Light Reflect?
Aug 28, 2007
Replies
5
Views
6K
How do gravitational waves transfer angular momentum in general relativity?
Aug 28, 2007
Replies
5
Views
3K
Can You Burn Anything with a 5 mW Green Laser?
Aug 27, 2007
Replies
1
Views
2K
Is existence faster than the speed of light?
Aug 23, 2007
2
Replies
63
Views
10K
Explaining reflection and refraction in atomic level
Aug 21, 2007
Replies
5
Views
12K
Do Atomic Particles Absorb or Reflect Light?
Aug 20, 2007
Replies
7
Views
3K
Why Isn't a Mirror the Same as a White Surface?
Aug 17, 2007
Replies
1
Views
3K
Radio Wave Speed: Reduce Source Transmission?
Aug 14, 2007
Replies
15
Views
7K
Spectral distribution of light source -> Kelvin degrees?
Aug 8, 2007
Replies
3
Views
9K
Polarizer Setup: How Does Rotating Change Polarization?
Aug 8, 2007
Replies
1
Views
3K
Here's a question on light ray optics and focal length.
Aug 5, 2007
Replies
11
Views
7K
Confusion in the secondary refrac. of light
Aug 5, 2007
Replies
3
Views
2K
Mirror Sunglasses: How Do They Work?
Aug 4, 2007
Replies
4
Views
6K
2 particle system: Photon + Massive particle
Jul 30, 2007
Replies
6
Views
4K
Reflection of sound from open pipe
Jul 29, 2007
Replies
12
Views
10K
Does the Inverse Square Law Apply to Lasers and Perfect Lasers?
Jul 26, 2007
Replies
13
Views
16K
Rocket acceleration after lauch and during flight
Jul 24, 2007
Replies
6
Views
2K
What Happens to Electrons and Cloud Charges After Lightning Strikes?
Jul 20, 2007
Replies
7
Views
3K
Plano-Convex Lenses: Collimating Light w/ 2m Diam. at 30m Dist.
Jul 18, 2007
Replies
4
Views
19K
Does my lightning rod sound worrying to you?
Jul 10, 2007
Replies
4
Views
3K
Can Destructive Wave Interference Defy the Law of Energy Conservation?
Jul 9, 2007
Replies
4
Views
4K
Is light faster in vacuum than it does in water?
Jul 9, 2007
Replies
34
Views
17K
Why Light Has No Net Charge & Can Be Bent by Gravity
Jul 7, 2007
Replies
1
Views
2K
Reflection of Light: Understanding the Angle of Incidence & Reflection
Jul 7, 2007
Replies
5
Views
3K
Speed of Light in Gas: FAQs & Explanations
Jul 4, 2007
Replies
20
Views
15K
What is the relationship between the magnitude of a sound wave and distance?
Jul 3, 2007
Replies
2
Views
2K
How does light spread beyond a cone?
Jul 3, 2007
Replies
20
Views
6K
Light transmission, reflexion, refraction and diffraction at a atomic level
Jun 26, 2007
Replies
5
Views
7K
Lens Flare/Halo: Photographing in Vacuum - Effects
Jun 25, 2007
Replies
3
Views
3K
Why High Energy Needed for 3-Level Laser Inversion?
Jun 25, 2007
Replies
14
Views
4K
What Causes Light to Bend in Gradients?
Jun 24, 2007
Replies
5
Views
3K
Order of Magnitude: Definition & Meaning
Jun 19, 2007
Replies
10
Views
5K
Why does my HDTV appear red when reflecting light?
Jun 18, 2007
Replies
5
Views
3K
Doppler Effect, Light, and Fan Blades
Jun 15, 2007
Replies
7
Views
6K
Polarization Confusion: Plane of Vibration vs Plane of Polarization
Jun 12, 2007
Replies
1
Views
2K
Explaining Snell's Law in Simple Terms
Jun 11, 2007
Replies
4
Views
4K
Do lenses bend light in a special way?
Jun 11, 2007
Replies
2
Views
2K
What Causes Lightning? Understanding the Science Behind the Flash and Sound
Jun 7, 2007
Replies
2
Views
3K
Maximizing Winter Sunlight for Your Solar Project: Tips from a DIY Enthusiast
Jun 7, 2007
Replies
5
Views
2K
Gyroscopes feel lighter when spinning
Jun 7, 2007
Replies
6
Views
10K
Which direction is skylight polarized at sunset?
Jun 4, 2007
Replies
6
Views
5K
Polarization of Light: Angular Momentum
Jun 4, 2007
Replies
22
Views
7K
Predicting Spectral Lines: Formula for All Elements
Jun 3, 2007
Replies
9
Views
5K
How does a Reflection diffraction grating work?
Jun 3, 2007
Replies
10
Views
20K
Focusing light using a pyramidal mirror setup
Jun 2, 2007
Replies
5
Views
8K
What is the equation for calculating the speed of light in different mediums?
Jun 2, 2007
Replies
8
Views
2K
Does the dipole send out light at a certain spinning speed?
Jun 1, 2007
Replies
2
Views
2K
Index of refraction question-.
May 31, 2007
Replies
1
Views
2K
How does the EYE/LIGHT/LENSES WORK FOR REAL?
May 28, 2007
Replies
4
Views
8K
Heavier Weight Lifted By Lighter
May 24, 2007
Replies
3
Views
3K
How do a photon's two fields look like
May 20, 2007
Replies
10
Views
4K
DIffraction vs. Inteference Help
May 20, 2007
Replies
2
Views
14K
Geometric Optics: Can Virtual Objects Form Images?
May 15, 2007
Replies
11
Views
4K
Understanding the Interaction of X-Rays & Electrons
May 15, 2007
Replies
1
Views
3K
Doppler Law in Light: Seeing the Light Barrier
May 14, 2007
Replies
7
Views
4K
How do other types of optical spectrum analyzers work?
May 10, 2007
Replies
5
Views
2K
Turning lightbulbs on and off makes it blow faster False or true?
May 3, 2007
Replies
43
Views
21K
Standing waves in a microwave oven
Apr 27, 2007
Replies
13
Views
16K
How Do Light Frequencies Combine to Create New Colors?
Apr 26, 2007
Replies
12
Views
6K
Aerobatic flight and the physics principles
Apr 26, 2007
Replies
3
Views
5K
What are the wavelengths of the primary colors of light?
Apr 22, 2007
Replies
5
Views
5K
Refraction, Fermat's Principle and Lawnmowers
Apr 20, 2007
Replies
8
Views
4K
Can Photons Have Acceleration? The Uncertainty Principle and the Speed of Light
Apr 20, 2007
Replies
3
Views
2K
Circuit with superconducting wire 1 light year in length
Apr 19, 2007
Replies
15
Views
5K
Infrared Laser spinning a small paper
Apr 17, 2007
Replies
8
Views
3K
Can refractive index matching make a solid invisible in a liquid?
Apr 17, 2007
Replies
19
Views
19K
Polarization of a Guitar String
Apr 17, 2007
Replies
2
Views
5K
Why do mirrors reverse left and right but not up and down?
Apr 17, 2007
Replies
5
Views
6K
Calculating Number of Images in Mirrors
Apr 17, 2007
Replies
7
Views
3K
Calculating Refractive Index of Liquid Mixtures: Is There a General Formula?
Apr 14, 2007
Replies
3
Views
21K
Moving faster than the speed of light
Apr 10, 2007
Replies
12
Views
5K
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