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Calculating Photon Count from Xenon-Arc Lamp
Mar 15, 2010
Replies
1
Views
4K
Light can't travel at the speed of light?
Mar 15, 2010
Replies
47
Views
8K
Do photons really bounce and bend? A question for physicists
Mar 14, 2010
Replies
4
Views
3K
Optics, reflexion over water: why?
Mar 14, 2010
Replies
7
Views
2K
Can We Turn the Universe Into Photons?
Mar 13, 2010
Replies
2
Views
2K
Why can't someone who is myopic see reflections clearly?
Mar 12, 2010
Replies
3
Views
3K
Spectroscopy via diffraction gratings with different spacings
Mar 12, 2010
Replies
2
Views
2K
Thickness of lens and its focal length
Mar 11, 2010
Replies
1
Views
44K
Is Light a Wave or Something More?
Mar 11, 2010
Replies
8
Views
7K
Changing Visible Light into IR and then back
Mar 10, 2010
Replies
1
Views
3K
Can X-Ray Ionisation Affect Non-Metals and Gases?
Mar 9, 2010
Replies
7
Views
4K
Light and Sound Waves: Can You See Through Walls?
Mar 8, 2010
Replies
20
Views
15K
What determines how light is reflected
Mar 7, 2010
Replies
3
Views
3K
About polar vectors and pseudo vectors
Mar 7, 2010
Replies
10
Views
26K
Speed Of Light and Gravitational Force
Mar 7, 2010
Replies
4
Views
3K
Can the light from a rotating bike wheel bend outside of the column?
Mar 6, 2010
Replies
10
Views
3K
What is the difference between diffraction and refraction in waves?
Mar 6, 2010
Replies
15
Views
49K
Negative Light Speed: Explaining the Physical Meaning of -c
Mar 2, 2010
Replies
3
Views
2K
Question about the brightness of light and the inverse square law.
Feb 28, 2010
Replies
2
Views
4K
How to know phase difference will be of a light wave entering a thin film?
Feb 28, 2010
Replies
1
Views
3K
Why are light waves from 2 separate light bulbs incoherent?
Feb 28, 2010
Replies
5
Views
6K
Helium 4 & Photon: Seeping & Propagation
Feb 25, 2010
Replies
4
Views
3K
Understanding X-ray Attenuation: Determining Absorption Probability and Depth
Feb 24, 2010
Replies
2
Views
3K
Question about light speed and something I'm having trouble understanding
Feb 23, 2010
Replies
8
Views
2K
I want to know that light has mass or not.
Feb 22, 2010
Replies
23
Views
5K
Can we 'feel' magnitudes of distant forces?
Feb 22, 2010
Replies
1
Views
2K
What Happens to the Energy in Destructive Wave Interference?
Feb 22, 2010
Replies
39
Views
13K
What Software Can Simulate Light Reflection for a Solar Heliostat Project?
Feb 20, 2010
Replies
1
Views
3K
Gas Laser: Stimulated Emission and Positive Ions
Feb 20, 2010
Replies
1
Views
2K
Magnitude of acceleration on a ramp
Feb 19, 2010
Replies
13
Views
12K
Shape of Light: Uncovering the Mystery
Feb 19, 2010
Replies
37
Views
6K
What Is Photonics and How Does It Involve Manipulating Photons?
Feb 18, 2010
Replies
1
Views
2K
The Speed of Light: Physics and Possibilities
Feb 18, 2010
Replies
4
Views
2K
How do Photons Reach the Speed of Light?
Feb 17, 2010
Replies
39
Views
10K
Is Solar Sail Propulsion Feasible with Photonic Laser Thrusters?
Feb 16, 2010
Replies
22
Views
5K
Reading a book in the infrared
Feb 15, 2010
Replies
3
Views
2K
How do I generate a diffraction pattern using FFT from a single slit?
Feb 15, 2010
Replies
5
Views
10K
Do Photons Have Mass or Just Influence from Gravity?
Feb 13, 2010
Replies
8
Views
3K
Light travel at different speeds in different medium
Feb 13, 2010
Replies
1
Views
2K
Chromatic Dispersion, and Variability of Refractive Index on Wavelength
Feb 12, 2010
Replies
5
Views
5K
What would be the force on a beam of particles from focused sunlight?
Feb 12, 2010
Replies
15
Views
4K
Diffraction of a circular aperture
Feb 12, 2010
Replies
2
Views
4K
Understanding Fourier Optics: From Spatial to Temporal Transformations
Feb 11, 2010
Replies
5
Views
3K
How Does Lens Shape Affect Focal Lengths?
Feb 9, 2010
Replies
1
Views
2K
Why is Light in a Sine Wave Form?
Feb 9, 2010
Replies
23
Views
27K
Understanding Thin Lens Formula: Image Location & Projection
Feb 8, 2010
Replies
1
Views
2K
How Many Lumens Are Needed to See a Flashing LED at 500 Meters?
Feb 5, 2010
Replies
6
Views
3K
Index of Refraction Chart: Find Many Materials & Values
Feb 5, 2010
Replies
2
Views
3K
Photonics Resources for Undergraduate Students
Feb 5, 2010
Replies
2
Views
2K
Understanding How X-Rays Work: Explained by an Expert
Feb 4, 2010
Replies
19
Views
7K
Magnitude and Attenuation in Fields subject
Feb 3, 2010
Replies
6
Views
2K
Why Is Putting Metal in a Microwave Dangerous?
Feb 2, 2010
Replies
15
Views
52K
S11 (scattering parameter 11) of a Resonator?
Feb 2, 2010
Replies
2
Views
4K
RealD Glasses and the polarized effect.
Feb 1, 2010
Replies
2
Views
4K
Compton Scattering Using Newtonian Physics
Jan 31, 2010
Replies
3
Views
2K
Energy <-> Mass conversion and visible light
Jan 31, 2010
Replies
7
Views
4K
Photons and gravitational field
Jan 30, 2010
Replies
2
Views
2K
Is it possible to make a gravity mirror ?
Jan 28, 2010
Replies
1
Views
8K
Negative Focal Length and Convex Mirrors: Is 1/di Negative?
Jan 28, 2010
Replies
1
Views
3K
What is the difference between mixed light and pure light?
Jan 27, 2010
Replies
2
Views
3K
Magnifying Glass & UV Rays - Is Cooking Possible?
Jan 27, 2010
Replies
2
Views
13K
Help needed: coupling light from a LED into an optical fiber
Jan 27, 2010
Replies
1
Views
7K
Pyro Optical Pyrometer by The Pyrometer Instrument Co. - Model/Type?
Jan 26, 2010
Replies
1
Views
5K
Red shift photons: where does the energy come from?
Jan 25, 2010
Replies
2
Views
2K
Is a bullet at the speed of light lethal?
Jan 25, 2010
Replies
7
Views
12K
What is the formula for magnitude and what exactly is it?
Jan 24, 2010
Replies
2
Views
2K
Is it possible to make a closed mirror system?
Jan 23, 2010
Replies
11
Views
4K
Why aren't interference filters also polarizers?
Jan 20, 2010
Replies
3
Views
2K
How does a laser beam propel objects in air?
Jan 18, 2010
Replies
6
Views
4K
Light velocity change in different medium
Jan 17, 2010
Replies
4
Views
7K
Does a light pulse get amplified when it goes to a less dense medium?
Jan 16, 2010
Replies
5
Views
2K
Light Reflection: Can Sunlight Take Craft Back to Launch?
Jan 16, 2010
Replies
7
Views
3K
Ideal destructive interference of two beams - Where is the energy?
Jan 16, 2010
Replies
9
Views
4K
Propagation of light in a vaccuum?
Jan 16, 2010
Replies
27
Views
4K
Sunglasses which reflects like a mirror
Jan 15, 2010
Replies
3
Views
3K
Photonic Crystal Fibres and COMSOL
Jan 15, 2010
Replies
3
Views
7K
Uncovering the Mystery of Bullet Flight: Investigating the Helix Theory
Jan 15, 2010
Replies
5
Views
7K
Travelling at the speed of light
Jan 15, 2010
Replies
9
Views
4K
Why Does an Object Appear Blue When All Other Frequencies are Absorbed?
Jan 13, 2010
Replies
6
Views
2K
What is the relationship between coherence and interference in wave propagation?
Jan 12, 2010
Replies
13
Views
3K
Do heavy and light cylinders roll the same?
Jan 11, 2010
Replies
3
Views
3K
Can Laser Technology Outpace Radio Signals for Information Transmission?
Jan 10, 2010
Replies
11
Views
4K
Does Light Have Zero Length and What Does That Mean for Velocity?
Jan 7, 2010
Replies
18
Views
4K
What do they mean by Light being a wave?
Jan 7, 2010
Replies
24
Views
5K
Laser optical components/setup
Jan 7, 2010
Replies
6
Views
3K
Interference of Light: Where Does the Energy Go?
Jan 7, 2010
Replies
15
Views
4K
Capturing light photons with the Hubble
Jan 6, 2010
Replies
3
Views
2K
Energy apparently equals mass times the speed of light squared
Jan 6, 2010
Replies
32
Views
12K
Optics: Ray matrix for a thin lens
Jan 6, 2010
Replies
11
Views
6K
Understanding How Infrared Thermometers Work
Jan 6, 2010
Replies
8
Views
3K
Calculating Impact Force of Freefalling Objects in Fenestration Testing
Jan 6, 2010
Replies
5
Views
5K
Uncertainty principle - light beam
Jan 5, 2010
Replies
2
Views
2K
Light some interesting questions and an observation
Jan 5, 2010
2
Replies
61
Views
15K
Black holes, speed of light and gravity oh my
Jan 4, 2010
Replies
15
Views
4K
180 degree out of phase reflection?
Jan 4, 2010
Replies
8
Views
9K
Have you ever wondered about the physics behind the diffraction of moonlight?
Jan 4, 2010
Replies
3
Views
3K
Fraunhoffer Diffraction
Jan 3, 2010
Replies
4
Views
2K
Light Propagation: Electric & Magnetic Fields in Vacuum/Medium
Jan 1, 2010
Replies
6
Views
2K
Travel Faster than a Photon: My 1st Forum Q
Jan 1, 2010
Replies
34
Views
5K
Where Can I Find Good Resources on Central Force and Scattering?
Dec 31, 2009
Replies
1
Views
2K
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