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Is a particle beam or laser beam conductive?
Jul 11, 2019
Replies
4
Views
2K
Permeability of copper in the microwave frequency range
Jul 10, 2019
Replies
3
Views
1K
Curl of Polarization in a bar electret
Jul 5, 2019
Replies
3
Views
11K
What can be used to change the direction of the laser beam?
Jul 3, 2019
Replies
3
Views
10K
Ball Lightning Discussions/Anecdotes?
Jul 1, 2019
Replies
31
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16K
Detectable wavelengths of light at the surface of the Earth
Jun 27, 2019
Replies
6
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10K
Understanding Waveform & Autocorrelation in Pulse Lasers
Jun 26, 2019
Replies
2
Views
10K
Noisy Wave Pattern Between Round Objects Behind a Light
Jun 26, 2019
Replies
1
Views
9K
How does a massless photon impart force?
Jun 21, 2019
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2
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9K
Interference Pattern from two coherent light sources
Jun 18, 2019
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1
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1K
Speed of the outside of a wheel faster than the speed of light
Jun 10, 2019
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12
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2K
Spacecraft path with polar coordinates
Jun 10, 2019
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1
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2K
Modes and Q-factor(s) of a random laser
Jun 9, 2019
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2
Views
10K
Create a focused beam angle of LED light using reflection
Jun 9, 2019
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10
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4K
Curious optical effect related to light passing through a mesh
Jun 4, 2019
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19
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19K
Pinhole Diffraction of a Spherical Wave
Jun 4, 2019
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6
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2K
The attractive force of photons on other photons & matter
Jun 1, 2019
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5
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17K
Why light slows in transparent media
May 30, 2019
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4
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9K
Number of interference fringes based on n open slits
May 25, 2019
Replies
1
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857
Interferometry (testing of optics)
May 24, 2019
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5
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2K
Laser rangefinder by phase-shift
May 22, 2019
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10
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4K
How does a laser rangefinder measure distances up to 20 km?
May 20, 2019
Replies
3
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2K
New Optics Toy: A 'Varicolor' filter
May 17, 2019
Replies
1
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9K
How does a laser rangefinder work?
May 14, 2019
Replies
8
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2K
What do these submaxima represent - Interference Pattern
May 14, 2019
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30
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3K
Focusing of a 2D Parabolic Mirror
May 12, 2019
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3
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2K
Effects of Lens Element Aberrations on a Fully Corrected Lens Image
May 8, 2019
Replies
10
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1K
Constructive and destructive interference
May 5, 2019
Replies
3
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12K
Will Headlights Work If My Car Travels Near the Speed of Light?
May 5, 2019
Replies
1
Views
10K
Several questions about the speed of light
May 5, 2019
Replies
12
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12K
Difference between O and E rays to S and P polarizations
May 3, 2019
Replies
1
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2K
What Causes Reflection and Transparency in Solid State Physics?
May 2, 2019
Replies
1
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16K
If photons can't escape a black hole, how come gravitons can?
May 2, 2019
Replies
18
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12K
What Would Happen if the Sun Suddenly Disappeared?
Apr 29, 2019
Replies
14
Views
9K
What is a 1-dimensional mirror?
Apr 19, 2019
Replies
1
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4K
Can light always be treated as a physical object?
Apr 18, 2019
Replies
15
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6K
Measuring Wavelength of Photons: Precision & Variation
Apr 17, 2019
2
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35
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9K
Speed of Light when not in a vacuum?
Apr 16, 2019
Replies
5
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5K
What makes a light source "brighter"?
Apr 15, 2019
Replies
7
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5K
Interference & Diffraction in Double Slit Experiment
Apr 15, 2019
Replies
7
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6K
Photon wavelength probability distribution for blackbody
Apr 14, 2019
Replies
1
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2K
Phase Shifts and Interference in Reflection: Understanding the Differences
Apr 14, 2019
Replies
1
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3K
Diffraction through a sub-wavelength aperture
Apr 14, 2019
Replies
1
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4K
Verify definition of circular polarization in Balanis.
Apr 13, 2019
Replies
1
Views
4K
How is a Photon being created?
Apr 13, 2019
Replies
3
Views
5K
Controlling light diffraction angle with a holographic "lens"
Apr 11, 2019
Replies
15
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5K
Michelson-Morley Experiment: the importance of the laser position
Apr 11, 2019
Replies
6
Views
4K
How can I find the width of the central diffraction maximum.
Apr 9, 2019
Replies
1
Views
10K
Irradiance from this infrared light source after a diffuser
Apr 9, 2019
Replies
6
Views
2K
Rayleigh criterion when light phase is known
Apr 8, 2019
Replies
4
Views
4K
Light Beam fired 1 AU into space
Apr 7, 2019
Replies
18
Views
4K
Why does it not work to carry a laser and shine it on a light sail?
Apr 6, 2019
Replies
13
Views
2K
Can Electric & Magnetic Fields Coexist?
Apr 1, 2019
Replies
18
Views
15K
Designing a reflection sundial for the southern hemisphere
Apr 1, 2019
Replies
3
Views
4K
Scattering direction and probability
Mar 30, 2019
Replies
6
Views
3K
Are there still open problems in classical wave optics?
Mar 29, 2019
Replies
2
Views
2K
Focusing light with a light sail
Mar 28, 2019
Replies
1
Views
2K
How can the electric field of optical fibers be visualized?
Mar 27, 2019
Replies
1
Views
1K
In what direction does a light wave vibrate?
Mar 24, 2019
Replies
9
Views
2K
Principle of Least Action for optics?
Mar 20, 2019
Replies
2
Views
2K
Explaining Squaring Numbers & Light to a 5-Year-Old
Mar 19, 2019
Replies
10
Views
6K
How to Calculate Radius of Curvature from Thin Film Interference?
Mar 15, 2019
Replies
2
Views
1K
Magnification of an Astronomical Telescope
Mar 12, 2019
Replies
2
Views
8K
Tornado Biggest Lightning Thunder BOOM Explosion EVER
Mar 11, 2019
Replies
2
Views
8K
What is the Fundamental Reason for EMR Diffraction?
Mar 6, 2019
Replies
11
Views
11K
Online lecture about treatise on light by Huygens
Mar 4, 2019
Replies
9
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2K
Absolute Zero v. The Speed of Light
Feb 27, 2019
2
Replies
40
Views
15K
Combine Products of Inertia using Superposition
Feb 27, 2019
Replies
1
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11K
Question: What happens to absorbed light?
Feb 25, 2019
Replies
16
Views
23K
Destructive interference in Unpolarised light
Feb 24, 2019
Replies
4
Views
3K
Is My Light Meter Reading in mLux or Lux?
Feb 24, 2019
Replies
4
Views
12K
What is the effect of a Laser on gravity
Feb 23, 2019
Replies
4
Views
12K
Wavefronts: Understanding Wave Optics
Feb 23, 2019
Replies
10
Views
2K
Can Light Experience Doppler-Equivalent Slingshotting Near Massive Bodies?
Feb 22, 2019
Replies
5
Views
12K
The microscopic expl. of how light is slowed in materials
Feb 21, 2019
Replies
2
Views
11K
Can the wavelength of a single photon be measured?
Feb 20, 2019
3
Replies
88
Views
24K
Perceiving white light from Lightbulb Illumination
Feb 19, 2019
Replies
16
Views
15K
Depth effect in mirror reflections
Feb 19, 2019
Replies
24
Views
15K
Photons and solar wind/plasma interaction?
Feb 19, 2019
Replies
2
Views
13K
Beginning through the Pedrotti optics book -- I have an energy question
Feb 12, 2019
Replies
1
Views
12K
Size resolution limitation on Dynamic Light Scattering
Feb 6, 2019
Replies
2
Views
24K
Why do higher frequency light waves bend more in a prism?
Feb 4, 2019
Replies
4
Views
4K
Is the EM field the medium for light waves
Jan 28, 2019
Replies
4
Views
2K
Exploring the Three Slit Interference Pattern: Differences and Effects
Jan 27, 2019
Replies
10
Views
17K
Classic double-slit experiment in a new light
Jan 21, 2019
Replies
9
Views
18K
Illustration about the "relativity" of light
Jan 20, 2019
Replies
6
Views
16K
Photon propagation? Is this correct?
Jan 19, 2019
Replies
8
Views
17K
The speed of light in glass and water
Jan 17, 2019
Replies
8
Views
11K
Discover How to Efficiently Polarize Microwave Radiation | 1mm Wavelength
Jan 17, 2019
Replies
3
Views
16K
Why does PPG (photoplethysmography) Use Infrared and Green Both Light
Jan 16, 2019
Replies
4
Views
16K
What's the mode of light in single-mode fiber?
Jan 14, 2019
Replies
6
Views
17K
Reflection (intrinsic and characteristic impedance effects)
Jan 13, 2019
Replies
4
Views
17K
Polarized Light -- Idea for headlight safety
Jan 12, 2019
2
Replies
39
Views
22K
Energy of a material with permanent polarization
Jan 11, 2019
Replies
3
Views
991
Normal incidence of light on a denser medium
Jan 9, 2019
Replies
5
Views
11K
Conservation of angular momentum in scattering processes
Jan 9, 2019
Replies
1
Views
10K
Received power for free space optics
Jan 8, 2019
Replies
5
Views
11K
Understanding FLP Vol 1, Section 30.1: Struggling w/Magnitude & Phase
Jan 8, 2019
Replies
3
Views
1K
Varying thickness diffraction grating
Jan 7, 2019
Replies
1
Views
8K
Do Photons Have Mass?
Jan 6, 2019
Replies
1
Views
7K
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