Optics Forum

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Laser focusing, minimum beam width
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Transparency of the sun to extremely long wavelength photons
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How does light from the sun cause atoms to vibrate?
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The universe through the eyes of a photon
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23
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Speed of Dark: Beyond Light & Time
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If light is a particle, what is wavelength / frequency ?
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Contracting Wavelength via mirrors.
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I throw a metal rod (not light) into the air
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2K
EM Destructive interference of two coherent beams
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Understanding single layer anti-reflection
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Can circularly polarized light interfere with linearly polarized
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4K
Looking for a MHD simulation (Magnito-Hydro-Dynamics)
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1
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Transformation Optics and Meta-materials
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2
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3K
Does Glass Affect the Speed of Light's Travel from A to B?
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4
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Can Laser/Maser Pass Through Tissue without Interacting?
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16
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3K
Can anybody explain the modulation of radio waves in terms of photons?
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6
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3K
Which Ray Will Reach the Second Plane First?
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2
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Light building the standard model
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68
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Speed of light in dispersive medium
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3K
When train moves at speed of light the time becomes slow. why it happens?
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2
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Is it possible to directly see your own reflection in water?
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6
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14K
I was just wondering how light comes to be, from light bulbs or flash
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4
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2K
Thin film interference formulae
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4
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Alternating violet and red fringes in Diffraction Grating
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2K
Can we observe the motion of a photon in cartesian space?
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4
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How do we know the speed of light exists ?
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4
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3K
Photos colliding from class 1 laser
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1
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UV/Blacklight Uses: Get Scientific Data from It!
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4
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2K
How can infrared photons impart energy
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11
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6K
Magnifying power v/s magnification
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4
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Radio Wave Laser: Feasibility & Applications
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1
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Can lasers affect sound waves?
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9
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How Does Photon Energy Influence Exponential Attenuation in Matter?
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Optical Antennas: Experiencing Light Differenly?
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13
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4K
How can this laser project a point in three-dimensional space?
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10
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4K
*Where* does sunlight scattering occur?
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Need to Know if Star Light is Coherent?
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4
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Will light eventually fade away given enough distance?
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15
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11K
Diffraction - Why must slit width be comparable to the wavelength of light?
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2
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11K
How does the wave-particle duality of light affect its behavior?
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6
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3K
Can Linear Birefringence create elliptically polarized waves?
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4
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3K
Light versus sound waves : velocity
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10
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Can light enegry or waves affects sound waves?
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7
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19K
Radome pulsed microwave questions
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4
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Observing a light source through blinds (picture included)
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1
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2K
Is Light a Macroscopic or Microscopic System?
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4
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2K
Does Focal Length Differ for Convex Lenses?
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5
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Answer to light speed travel is E=mc2 itself?
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4
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3K
Two definitions of wave reflection coefficient
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Does Total Internal Reflection Always Have Equal Angles?
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2
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2K
Does Total Internal Reflection Occur for Light Passing from Air into Water?
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1
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Can I use any watt light bulb on my ceiling without risking an explosion?
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1
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2K
What factors influence the direction of emitted photons from an atom?
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1
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2K
Optical trap, choosing the right condenser NA illuminate QPD
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1
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2K
Light hitting a superconductor?
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4
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2K
How does light stay in motion? Why does it travel at it's speed? Does
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2
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Why light is a sinusoidal wave?
2
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56
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10K
Absorbing and reflecting light
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13
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Objects Traveling at 60% Light Speed: A Paradox?
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13
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4K
Why can't we form an image with just one ray of light?
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8
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4K
Why isn't light induced by an antenna
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5
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Why is it possible to see a real image in a mirror?
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2
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3K
How Can I Measure Fluorescence Lifetime with a 532nm Picosecond Laser?
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1
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Understanding what Light is (My attempt at an explanation)
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9
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3K
How Does Coherence Affect Interference and Diffraction in Light Waves?
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7
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4K
Can spherical aberration be avoided in lenses with non-spherical curves?
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Sunlight equivalent light bulb
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2
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Causes of Diffraction Patterns
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How/why does diffraction occur?
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Question about speed of light?
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5
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Gaussian beam and focusing versus geometrical optics
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1
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Can speed of light be faster with this?
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4
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Speed of Light: Exploring Its Variations
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13
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Polarized Light: Understanding How Polarization Occurs
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2
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Software to calculate diffraction figure at focal point of concave mirror?
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1
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3K
Laser reflection/propagation through plastic
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1
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Could a rocket come close to the speed of light?
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18
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9K
Transverse mode output from a multimode fiber using TEM00 laser source?
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2
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Fibre Misalignment and Light Coupling
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4
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Green Laser Pointer Reflecting: Hot or Not?
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Burning Elements - Visible Light Spectrum
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2
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What happens to light when it hits an object?
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10K
Plasma Induced UV Laser for the VASIMR instead?
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1
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Why longer wave diffracts more?
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1
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3K
Why Does Tube Length Affect Microscope Focal Length?
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1
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How double glasses window reflect ?
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How Does Light Interact with Matter in Our Atmosphere?
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Light Questions: Gravity & Mass
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21
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Does destructive interference contradict the law of conservation of energy?
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16
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Interference of fibre optic signals with mobile phones' microwaves?
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6
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11K
Evidence that light is a transverse wave?
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2
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10K
What really cause light to appear slower in media?
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4
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3K
Trapping a omni-directional light source within an uni-directional light source
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4
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Direction when the magnitude of the instantaneous velocity is 0
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16
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8K
Why do green lasers rays are visible?
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15
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Understanding Photon Velocity: Impact on Mass and Life Span Explained
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4
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What causes light to become brighter?
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9
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22K
Why does a plane glass not separte light? (but a prism does)
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4
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Can Wave Reflection Interfere with Communication?
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7
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The effect of Earth's Roatation on Flight
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18
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11K

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