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Light a light bulb with no contact?
Jan 7, 2009
Replies
6
Views
4K
What Are the Best Resources to Learn About UV Sanitization?
Jan 7, 2009
Replies
2
Views
2K
Can Gravity Travel Faster Than Light?
Jan 6, 2009
Replies
25
Views
4K
Laser Energy Reflection: Understanding Photon Build-Up in a Vacuum
Jan 5, 2009
Replies
4
Views
3K
How does a refractometer work?
Jan 5, 2009
Replies
1
Views
6K
How could an object (not aerodynamic shaped) achieve flight?
Jan 2, 2009
Replies
2
Views
3K
Superposition: Does EM Radiation Require an EM Field Everywhere?
Jan 1, 2009
Replies
2
Views
2K
Mathematical shape for a lens with no spherical aberration
Jan 1, 2009
Replies
41
Views
16K
Understanding the Three Velocities of Light: Phase, Group, and Signal
Dec 31, 2008
Replies
2
Views
2K
Two way mirror on the side where you can see through it
Dec 26, 2008
Replies
5
Views
3K
Why Shouldn't You Put Metal Pots in a Microwave?
Dec 26, 2008
Replies
1
Views
22K
The Mysterious, Impossible Box: Questions & Answers
Dec 25, 2008
2
Replies
71
Views
13K
Light, refelection, transparency, direction?
Dec 24, 2008
Replies
2
Views
2K
How does laser dissipation in air affect power and intensity?
Dec 24, 2008
Replies
3
Views
7K
Can both a photon and it's reflection hit a particle?
Dec 21, 2008
Replies
5
Views
3K
Light Diffraction: Is Wavelength Affected by Slit Width?
Dec 20, 2008
Replies
6
Views
3K
Gps, Mobile phones microwaves and radiowaves
Dec 19, 2008
Replies
5
Views
6K
X-Ray Diffraction: Photon-Atom Interaction & De Broglie's Eq.
Dec 19, 2008
Replies
1
Views
2K
When does the photon get captured?
Dec 19, 2008
Replies
1
Views
3K
Can a Red Laser Create Beautiful Diffraction Patterns with Limited Materials?
Dec 18, 2008
Replies
7
Views
3K
What are saturable absorbers and how do they impact the behavior of lasers?
Dec 18, 2008
Replies
3
Views
2K
Does a photon propogate faster than c ?
Dec 17, 2008
Replies
16
Views
5K
Reflection of light off 4 90 degree mirrors
Dec 16, 2008
Replies
12
Views
5K
Where Can I Find a Tutorial for Simple Optical System Design Using Zemax?
Dec 15, 2008
Replies
4
Views
10K
What is the maximum path that lightning can travel?
Dec 13, 2008
Replies
2
Views
2K
Distance traveled by X-rays in air
Dec 11, 2008
Replies
1
Views
6K
Any experimental evidence of Doppler shift in light?
Dec 11, 2008
Replies
7
Views
3K
Light Speed Consistency: Puzzling Questions
Dec 10, 2008
Replies
3
Views
2K
Fiber Optics & Lasers: Light Usage
Dec 9, 2008
Replies
3
Views
2K
Do Photons Have Mass? Understanding the Relationship Between Mass and Energy
Dec 8, 2008
Replies
4
Views
2K
Einzel Lens Operating Principle
Dec 8, 2008
Replies
6
Views
10K
Is Light Really Slowing Down or Is It Just More Matter Between Us and the Stars?
Dec 7, 2008
Replies
1
Views
2K
What Limits the Distance of Reflections in Parallel Mirrors?
Dec 5, 2008
Replies
1
Views
2K
Discover the True Magnification of Your Magnifying Glass: A Complete Guide
Dec 4, 2008
Replies
1
Views
2K
Does Light Really Slow Down When Passing Through a Medium?
Dec 4, 2008
Replies
25
Views
7K
Burning wood with a magnifying glass
Dec 4, 2008
Replies
2
Views
10K
Fourier Analysis's relation to diffraction
Dec 4, 2008
Replies
3
Views
6K
How do non planar waves reflect?
Dec 3, 2008
Replies
6
Views
3K
Making negative refraction with positive index material
Dec 2, 2008
Replies
16
Views
4K
How Does the Size of Colors in the Visible Spectrum Relate to Their Intensity?
Dec 2, 2008
Replies
18
Views
7K
What Governs the Speed of Light Itself?
Dec 2, 2008
Replies
48
Views
8K
Altering Images for Corrective Optics: Details Appreciated
Dec 2, 2008
Replies
6
Views
2K
Discovering the True Magnification of Your Magnifying Glass: Tips and Tricks
Dec 2, 2008
Replies
1
Views
3K
Can the Doppler Effect Explain Redshift in Light?
Dec 1, 2008
Replies
9
Views
4K
How does the f-number of camera lenses affect image area?
Dec 1, 2008
Replies
1
Views
2K
Sigma Polarisation: Learn What it is & How It's Defined
Nov 29, 2008
Replies
4
Views
29K
Why light fades over distance?
Nov 26, 2008
Replies
1
Views
7K
Are there particle's or masses that travel faster than light?
Nov 25, 2008
Replies
34
Views
5K
A question about the polarization due to reflection
Nov 24, 2008
Replies
2
Views
3K
Refraction through Muliple media
Nov 23, 2008
Replies
9
Views
8K
Fiber optic based beam splitter
Nov 22, 2008
Replies
1
Views
5K
Method for determining the difference between two similar optical wavelengths
Nov 21, 2008
Replies
7
Views
3K
Reflection with a complex material
Nov 19, 2008
Replies
5
Views
2K
Debating Wave-Particle Duality of Light
Nov 19, 2008
Replies
17
Views
4K
How Does Electron Behavior Influence Light Reflection in Metals?
Nov 17, 2008
Replies
4
Views
2K
Refraction vs Frequency Question
Nov 14, 2008
Replies
2
Views
3K
Please Explain Me Refraction of light
Nov 12, 2008
Replies
11
Views
6K
Stopping light, playing with it, then releasing it.
Nov 12, 2008
Replies
2
Views
2K
Why is the rest mass of photons 0?
Nov 12, 2008
Replies
21
Views
6K
Optimizing Beam Size for Increased Diffraction Efficiency
Nov 10, 2008
Replies
2
Views
3K
How can I project images onto a mirror for a painting project?
Nov 10, 2008
Replies
6
Views
18K
Thin Lenses: Lens Makers' Equation Proved
Nov 10, 2008
Replies
3
Views
2K
Optics Help With LED Foglights
Nov 8, 2008
Replies
5
Views
2K
Bending a laser beam's cross section possible?
Nov 6, 2008
Replies
2
Views
3K
Fraunhofer diffraction and Fourier transform
Nov 6, 2008
Replies
2
Views
5K
Why does a PWM light dimmer actually work?
Nov 6, 2008
Replies
14
Views
8K
Focal length of concave lens experiment
Nov 6, 2008
Replies
1
Views
29K
Diffusion of laser light for measuring laser power
Nov 5, 2008
Replies
3
Views
10K
How do we know the maximum speed of light?
Nov 5, 2008
Replies
1
Views
3K
Measuring laser output with Lux meter
Nov 3, 2008
Replies
2
Views
18K
Does ball pen emit laser beam?
Nov 3, 2008
Replies
2
Views
2K
Infra Red Light: How Electron Movement Creates NIR
Nov 2, 2008
Replies
2
Views
2K
Understanding the Orientation of Light Waves: Electro vs. Magnetic Aspects"
Oct 31, 2008
Replies
6
Views
2K
Can Scotch Tape Really Produce X-rays?
Oct 30, 2008
Replies
4
Views
3K
Directly measure frequency of light source
Oct 30, 2008
Replies
3
Views
4K
Mirrors & Prisms: Reflecting Wavelengths
Oct 27, 2008
Replies
2
Views
4K
Why Does an Object Appear Larger Underwater?
Oct 27, 2008
Replies
6
Views
3K
Why can i see hidden image with a polarized spec?
Oct 26, 2008
Replies
1
Views
3K
Polarized light filtering question.
Oct 25, 2008
Replies
4
Views
8K
Solar laser (for the lack of abetter word)
Oct 24, 2008
Replies
3
Views
4K
Experimental Optics: Solving Challenges with Mach-Zhender & Fibers
Oct 23, 2008
Replies
4
Views
3K
What Does the 4a Angle Mean in Light Trails?
Oct 23, 2008
Replies
9
Views
2K
What Damage Can Infrared Rays, Radar Waves, FM Waves, etc. Do To The Body?
Oct 22, 2008
Replies
1
Views
13K
How Do Lasers Ensure Photons Travel in the Same Direction?
Oct 21, 2008
Replies
13
Views
3K
Huygens principle and single slit diffraction
Oct 21, 2008
Replies
1
Views
4K
Laser Reflection: Why Does it Appear Speckled?
Oct 20, 2008
Replies
2
Views
3K
Confusion about Homogenous Broadening in Lasers
Oct 14, 2008
Replies
2
Views
3K
How do light dependent resistors work with photons and electrons?
Oct 9, 2008
Replies
2
Views
5K
Enhancing Light: Application for Energy Conservation?
Oct 9, 2008
Replies
1
Views
2K
Speed of light in pure Hydrogen
Oct 8, 2008
Replies
10
Views
8K
Understanding Ray of Light: What is it?
Oct 6, 2008
Replies
14
Views
11K
Right handed vs Left handed circular polarization
Oct 4, 2008
Replies
8
Views
37K
Refraction - what's happening for real
Oct 2, 2008
Replies
6
Views
2K
Challenges in Focusing X-Rays with Lenses
Oct 2, 2008
Replies
18
Views
11K
Uncertainty of the speed of light in vacuum
Oct 1, 2008
Replies
11
Views
6K
Are all photons the same or do they have different properties?
Oct 1, 2008
Replies
5
Views
4K
Expansion of polarized plane waves into spherical harmonics,
Sep 30, 2008
Replies
12
Views
7K
Mirror Alignment: Keck Telescope Instrument Accuracy
Sep 30, 2008
Replies
5
Views
5K
Snell's Law Variation: Expressing with Cosines
Sep 28, 2008
Replies
2
Views
13K
Light & Mirrors: Has a Physicist Ever Tried This?
Sep 27, 2008
Replies
1
Views
2K
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