Optics Forum

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Combine lasers to make a single strong beam
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Inverse Square Law with Half Value Layers for X-Rays
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3
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Intersecting 2 continuous laser in thin air to create a dot
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4
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Longitudinal/transverse modes in optical cavity (resonator)
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2
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Wave interference - coherence and wavelength
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7
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How does NASA achieve zero gravity on their zero gravity flights?
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9
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How do interference and AR coatings work?
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14
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Fourier-transform Infrared Spectroscopy Thin Film Thickness
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9
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What does object space and image space mean in optics?
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6
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Does light refraction play a role in bubble iridescence?
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2
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Newton's laws in polar coordinates
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3
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The problem explaining how homopolar motors work
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2
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Goldfish bowl reflecting inside into apparent 3-D
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2
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How could the "size" of a photon be measured?
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24
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Experimental evidence that Snell's law is correct
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3
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Reflection from smartphone screen
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5
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Optical geometry of smartphone camera.
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3
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Can Light Accelerate When Changing Direction?
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7
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Understanding Optical Transformations
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5
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Lenses and Pinholes: What Does "In Focus" Mean? - Comments
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11
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Unknown light-based Phenomenon
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12
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What are the applications of H & K sheet polaroid?
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5
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Strange Optical Phenomenon (diffraction or something else?)
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26
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Polarization of light and diffuse/specular reflection
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6
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How Do Color Differences Affect Wall Surface Temperatures?
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7
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What is the gradient in polar coordinates?
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3
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What do polarisation lens block?
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4
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What is the cause of this sound from the tube light?
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8
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What topics are best for study of how gravity light works?
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10
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Sunlight absorption spectrum and colors in sunlight
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7
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Do light and sound waves roll up and break like ocean waves?
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52
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Apparent depth when two or more refracting surfaces are present
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3
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Diffraction work differently on water waves vs light waves?
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6
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Is it possible to bend a laser beam?
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15
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3K
Ellipsometry- why is UV better than Visible light?
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3
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Light-beam propagation across impassable barrier?
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23
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Light reflecting through a geometry
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3
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How does the wavelength change the amount of refraction?
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6
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1K
Can a vector with zero magnitude have certain direction?
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12
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2K
Generating Audio Signals from Lasers: Theoretical Possibilities?
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8
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2K
How does changing projector lenses affect brightness?
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15
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4K
Lower microwave absorption efficiency to increase penetration (cooking)
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11
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2K
Does the Photon Defy the Rules of Special Relativity?
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17
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If lasers cross-over, do they "add up"
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8
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1K
Can violet lasers trick our eyes into seeing white?
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9
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1K
Use of a half wave plate plus polarizer to attenuate lasers?
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2
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3K
Light bulbs -- is there a continuous wave spreading out?
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12
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2K
How Did Light and Oxygen Influence the Evolution of Eyes and Lungs?
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3
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How does one dimensional light warp multiple dimensions?
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12
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Light - Black-bodies & Spontaneous / Stimulated Emission.
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1
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Uses for laser light in measuring hair width
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5
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Dependence of index of refraction on frequency
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15
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3K
Light in a medium: do phonons store light energy?
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1
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Speed of Light Thought Experiment
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4
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How can light propagate through Hollow optical fiber.
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7
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2K
Understanding Infrared Spectroscopy: Analysis of a Recorded Spectrum
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2
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How are photons able to carry messages?
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8
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What explains this potato light socket & battery?
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4
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Is the speed of light always constant in nature?
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13
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2K
Directing sunlight into the optical fiber
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8
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3K
Why Do Some Light Sources Show Clear Interference Patterns While Others Do Not?
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10
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How to calculate attenuation for optical fiber bundle?
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14
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3K
Why doeslight "turn" when it travels through water?
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3
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1K
Refractive index as a function of the concentration of a sugar solution
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2
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A Question about Diffraction....
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9
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Using multiple mirrors in Michelson Interferometer
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7
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Multiple reflections and transmissions of light inside a cube
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2
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Why was the speed of light even considered to be infinite?
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32
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3K
What is the max magnification of 0.5mm film lens.
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1
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Do Concave Mirrors Always Form Real Images?
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2
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What Is the Nature of Black in the Visible Spectrum VIBGYOR?
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51
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Can Negative Mass at near Speed of Light go Back in Time?
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2
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Campton Scattering: Colour Change Explained
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3
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Visible light and light are two different things?
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22
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Single Slit Fraunhofer Diffraction
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4
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Why Does an Electron Release a Photon After Absorption?
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4
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How to find the speed of light practically?
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7
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Creating a two lens system of tunable focal length
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1
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Thin slits and accuracy of Kirchhoff's diffraction formula
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17
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Optical Tweezers and 3D Printing
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2
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Rainy Day: Black Clouds and Light
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5
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Brewster's law for incident vertically polarised light
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10
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How does the optical system of a structured light 3D scanner work?
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1
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From whence cometh the photon?
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3
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Using laser to overcome conservation of etendue
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1
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Speed and Velocity vs magnitudes
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2
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How to Make a Laser That Burns Paper: Tips for Using Multiple Convex Lenses
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2
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What are the practical limits of constructive interference?
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2
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White light vs visible spectrum
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2
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Decreasing the power density of a laser
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19
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Light in a cup (Can you explain this phenomenon?)
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9
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Why can't we use opaque object in optical fibres?
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8
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Superconductivity for light beams?
2
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39
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Image is inverted when I look into a projector lens -- Why?
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30
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9K
Two spots with one laser beam in images
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14
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2K
Laser and Mirror Thought Experiment
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5
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Optics (Intensity of light): Which in degrees, which in rad?
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5
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4K
How does a ring laser detect Earth's rotation?
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4
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2K
What caused the change in a pilot light at my workplace?
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29
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3K
Explaining transverse theory of light using EM theory
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8
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1K

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