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Can we use the momentum of light to propagate spacecrafts in space?
Jul 15, 2018
Replies
3
Views
1K
On board a laser powered solar sail
Jul 14, 2018
Replies
6
Views
2K
Can you ionize metal with photons?
Jul 11, 2018
Replies
1
Views
1K
What is the unit of measurement in this X-Ray?
Jul 2, 2018
2
Replies
47
Views
7K
Have you heard of the mirage effect on the sea?
Jul 1, 2018
Replies
3
Views
1K
Intensity characterization of laser pulses
Jun 30, 2018
Replies
3
Views
1K
How can we visualize the movement of Photons on the water?
Jun 30, 2018
Replies
11
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2K
How to calculate the number of photons
Jun 28, 2018
Replies
5
Views
3K
Nonlinear Optics - Pockels effect
Jun 26, 2018
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2
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1K
Can the speed of light be constant and absolute?
Jun 23, 2018
Replies
29
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3K
Why does the sun affect radio wave propagation?
Jun 23, 2018
Replies
12
Views
4K
How a TFP (Thin Flim Polarizer) works?
Jun 20, 2018
Replies
1
Views
1K
How to state the laws of refraction and apply them to....
Jun 20, 2018
Replies
2
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1K
How to concentrate white light in a very small point?
Jun 20, 2018
Replies
4
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2K
How does a Ruhmkorf coil produce radio waves?
Jun 18, 2018
Replies
1
Views
889
Why is the refractive index for red lower than for blue?
Jun 17, 2018
Replies
7
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2K
Scattering dynamics and viscosity
Jun 15, 2018
Replies
1
Views
997
IR camera 1550 nm IR light source
Jun 14, 2018
Replies
7
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3K
Interference puzzle - Where does the energy go?
Jun 12, 2018
2
Replies
53
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8K
The reality of photons (real vs virtual etc)
Jun 11, 2018
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5
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1K
Light Reflection: Understand How Light Interacts with Materials
Jun 11, 2018
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26
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4K
Is there a limit to how steep the refractive index gradient can be
Jun 11, 2018
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6
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1K
Parabolic shape configuration's effect on photon volume?
Jun 10, 2018
Replies
21
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2K
Why the Frequency of Light Does Not Change Through a Medium
Jun 2, 2018
Replies
9
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3K
Single photon and double slit experiment
May 31, 2018
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9
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3K
Speed of Light x2: Car Travel & Bullets Fired
May 29, 2018
Replies
21
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2K
Why adding more polarized filters results in more light passing?
May 23, 2018
Replies
13
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3K
How do we know that light that comes from the stars is in past?
May 23, 2018
Replies
7
Views
1K
What's the amount of energy lost in Total Internal Reflection?
May 21, 2018
Replies
4
Views
2K
Can Crystal Symmetry Explain the Lack of Optical Activity in Quartz?
May 20, 2018
Replies
2
Views
1K
How many batteries does it take to light this bulb up?
May 18, 2018
Replies
17
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5K
I have problem with a mirror on Michelson interferometer
May 18, 2018
Replies
2
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1K
What will stop me from going at the speed of light?
May 17, 2018
Replies
6
Views
2K
Real image appears in front of the mirror?
May 16, 2018
Replies
17
Views
5K
Simulate other lenses with Time of Flight (ToF) camera
May 15, 2018
Replies
22
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3K
Modes of Optical Fiber propagation
May 14, 2018
Replies
8
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2K
Visible light communication modulation schemes?
May 13, 2018
Replies
3
Views
1K
Sinusoids as Phasors, Complex Exp, I&Q and Polar form
May 12, 2018
Replies
4
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2K
Does Phase Change on Reflection Violate Stokes Relation?
May 11, 2018
Replies
10
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3K
Where can I get some hot mirror (near) infrared mirror) film
May 9, 2018
Replies
2
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1K
Can a photon travel slow enough to be seen by the naked eye
May 8, 2018
Replies
18
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2K
Difference between emission due to absorption and reflection
May 6, 2018
Replies
1
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1K
Turning the refraction formula into reflection: Negative index
May 5, 2018
Replies
16
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3K
Colored Light or Colored Object?
May 5, 2018
Replies
26
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3K
Apply Sign Conventions in Optics Problems Using Lens and Mirror Equations?
May 4, 2018
Replies
13
Views
9K
After a lightning bolt, what happens to the plasma?
May 3, 2018
Replies
1
Views
1K
Possible to make speckles without a Laser?
May 3, 2018
Replies
6
Views
1K
Sound Wave Interference: Investigating Null Results with Sound Level Meter Data
May 2, 2018
Replies
12
Views
2K
What can I do with an infrared camera?
May 2, 2018
Replies
6
Views
2K
Finding Uniform Focusing in Flexible Fresnel Lenses
Apr 30, 2018
Replies
1
Views
1K
Light Reflection: A 3D Designer's Guide
Apr 27, 2018
Replies
12
Views
2K
Photon Duration & Wavelength: Exploring the Mysteries
Apr 26, 2018
Replies
21
Views
3K
Imaging optics and lowest possible angle video projection?
Apr 23, 2018
Replies
3
Views
2K
Exploring Light Diffraction: Insights from Feynman's Books
Apr 21, 2018
Replies
17
Views
2K
Intensity as light passes through two quarter-wave plates?
Apr 21, 2018
Replies
5
Views
3K
When a photon is created, it instantly achieves the speed of light -- How?
Apr 18, 2018
Replies
5
Views
2K
Does Snell's Law accurately explain light refraction in water?
Apr 17, 2018
Replies
17
Views
2K
Light waves through polarizers: transverse or longitudinal?
Apr 16, 2018
Replies
17
Views
2K
Light speed travel (now "understanding the difference between weight and mass")
Apr 16, 2018
Replies
15
Views
2K
Infinitesimal, Snell's law, and ray tracing
Apr 15, 2018
Replies
7
Views
2K
Lens Math for a Semicircle and Vesica Piscis?
Apr 14, 2018
Replies
2
Views
1K
Obtaining 700nm light wavelength
Apr 13, 2018
2
Replies
48
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7K
Is the index of refraction constant for a given medium?
Apr 9, 2018
Replies
7
Views
4K
Overlaying light beams by one replacing the other where they intersect
Apr 8, 2018
2
Replies
62
Views
4K
Reflection from a small spherical mirror
Apr 7, 2018
Replies
9
Views
2K
Is there any phenomenon capable of replacing light?
Apr 5, 2018
Replies
2
Views
1K
Reflection of light in metallic surface and glass
Apr 4, 2018
Replies
10
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2K
Refraction of Ocean waves: Wide Headland vs Narrow
Apr 3, 2018
Replies
22
Views
7K
What's the superposition principle for group action?
Apr 2, 2018
Replies
6
Views
1K
Do Lights Move at the Same Speed?
Apr 1, 2018
Replies
6
Views
1K
Why parts of the laser ray seem brighter than other parts
Apr 1, 2018
Replies
12
Views
1K
3D subsurface laser engraving for translucent minerals?
Mar 30, 2018
Replies
5
Views
2K
Rotating mirror system for shifting a beam?
Mar 30, 2018
Replies
14
Views
2K
Velocity in polar coordinates (again)
Mar 29, 2018
Replies
2
Views
4K
Collimated light from red dot scopes?
Mar 29, 2018
Replies
16
Views
3K
Is the Speed of Light Limited by the Properties of Matter?
Mar 28, 2018
Replies
16
Views
2K
Understanding Image Formation: Exploring the Role of Photons and Detectors
Mar 25, 2018
2
Replies
37
Views
4K
Laser Gravity: Can a Laser Pull Gently?
Mar 23, 2018
Replies
5
Views
1K
Nothing can travel faster than the speed of light
Mar 23, 2018
Replies
13
Views
2K
Why the speed of light squared?
Mar 22, 2018
Replies
6
Views
3K
Conservation of energy of a perfectly decoherent laser
Mar 22, 2018
Replies
12
Views
1K
When I analyze elliptical polarization using a linear polarizer....
Mar 21, 2018
Replies
2
Views
2K
How to create diffraction gratings from negative film
Mar 18, 2018
Replies
7
Views
2K
Was the Ultraviolet Catastrophe a Real Problem or Just a Fake?
Mar 17, 2018
Replies
14
Views
2K
Understanding Laser Safety Glasses: Wavelengths, Frequency, and Protection
Mar 17, 2018
Replies
16
Views
2K
Is there free software for simulating near field diffraction
Mar 17, 2018
Replies
1
Views
1K
Propagation of light in a vacuum
Mar 15, 2018
Replies
27
Views
4K
Is the Ideal Lens Calculation Patentable?
Mar 13, 2018
Replies
29
Views
3K
Why doesn't sunlight have infinite energy?
Mar 13, 2018
Replies
25
Views
3K
Lightbulb and mini hydro generator
Mar 8, 2018
Replies
7
Views
2K
Optics: Focusing Explained with an Owl
Mar 7, 2018
Replies
11
Views
2K
Simple microscope and convex lens
Mar 6, 2018
Replies
1
Views
1K
Reflection/transmission of waves at interfaces
Mar 6, 2018
Replies
14
Views
2K
Can light be split by colour accurately?
Mar 5, 2018
Replies
8
Views
1K
Relationship between interference and arm length in MZI
Mar 2, 2018
Replies
4
Views
2K
Faster than the speed of light (pulling on a string)?
Mar 2, 2018
Replies
4
Views
1K
Why hasn't gravity been solved for space flight
Mar 1, 2018
Replies
3
Views
1K
Can a Laser Beam be Repeated Across Multiple Points?
Feb 28, 2018
Replies
2
Views
956
Why Raman spectroscope doesn't use 532nm laser ?.
Feb 28, 2018
Replies
1
Views
1K
How Do Different Diffraction Grating Designs Affect Analysis Results?
Feb 20, 2018
Replies
1
Views
1K
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