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Graduate Why is Refraction Explained as Phase Shift in Dielectrics?

May 23, 2011 · Replies 6 · May 27, 2011

Replies: 6

Views: 4K

Graduate Interference pattern after the region of the interference

May 26, 2011 · Replies 5 · May 27, 2011

Replies: 5

Views: 5K

Undergrad Question about polarization of light

May 27, 2011 · Replies 1 · May 27, 2011

Replies: 1

Views: 2K

High School Usually when I don't know what something is, I look it up, then I

May 24, 2011 · Replies 9 · May 25, 2011

Replies: 9

Views: 2K

Undergrad Car traveling away from you and turns the lights on, speed of light

May 25, 2011 · Replies 5 · May 25, 2011

Replies: 5

Views: 2K

Undergrad Photonics System: LED Signal Variation - Intensity vs. Amplitude

May 23, 2011 · Replies 4 · May 24, 2011

Replies: 4

Views: 2K

Graduate Optics - Transmission of plane wave at oblique incidence

May 24, 2011 · Replies 3 · May 24, 2011

Replies: 3

Views: 2K

Undergrad 3D glasses and polarization, how it works?

May 23, 2011 · Replies 1 · May 24, 2011

Replies: 1

Views: 4K

High School Defraction of Light: Why White Ray of Light Refracts in Prism

May 23, 2011 · Replies 1 · May 23, 2011

Replies: 1

Views: 3K

Undergrad Hi Guys,When the eye sees an object, there has to be light

May 21, 2011 · Replies 4 · May 22, 2011

Replies: 4

Views: 3K

High School Objects that react physically to light?

May 19, 2011 · Replies 14 · May 20, 2011

Replies: 14

Views: 11K

Graduate Why do things have the color they have?

Oct 8, 2006 · Replies 13 · May 20, 2011

Replies: 13

Views: 10K

High School My tutor set me out to figure out how shadows are 3D.I'm 14 so I

May 19, 2011 · Replies 14 · May 20, 2011

Replies: 14

Views: 2K

Undergrad Why is it that when we change the light from un polarized to polarized

May 15, 2011 · Replies 6 · May 20, 2011

Replies: 6

Views: 2K

Undergrad I have a question about Neon and lasers

Dec 8, 2010 · Replies 6 · May 19, 2011

Replies: 6

Views: 3K

Graduate What Angle Must Light Make at the Water-Oil Interface to Prevent Escape?

May 19, 2011 · Replies 1 · May 19, 2011

Replies: 1

Views: 2K

Graduate Modulating Laser Beam with Radio Frequency - Bill

Dec 17, 2010 · Replies 2 · May 19, 2011

Replies: 2

Views: 2K

Graduate In the following figure, the space b/w the glass lenses is filled with

May 11, 2011 · Replies 3 · May 19, 2011

Replies: 3

Views: 2K

Graduate What is the significance of the wavevector in optics and k-space?

Jul 3, 2008 · Replies 8 · May 18, 2011

Replies: 8

Views: 49K

High School 2 lights with unequal brightness

May 18, 2011 · Replies 1 · May 18, 2011

Replies: 1

Views: 2K

Undergrad UV Laser Mirrors for 190nm Range - Find Here!

May 17, 2011 · Replies 3 · May 18, 2011

Replies: 3

Views: 2K

Graduate Mirrors for UV Laser & Invisible Lasers

May 18, 2011 · Replies 1 · May 18, 2011

Replies: 1

Views: 3K

Graduate Predicting the Future and Light Speed

May 18, 2011 · Replies 3 · May 18, 2011

Replies: 3

Views: 3K

Undergrad Different Wavelengths of Light in Particle View

May 16, 2011 · Replies 2 · May 17, 2011

Replies: 2

Views: 2K

Undergrad Why is any wave defined by the wavelength, but not by the amplitude?

May 9, 2011 · Replies 4 · May 17, 2011

Replies: 4

Views: 2K

High School How Does Colored Light Affect Water Temperature?

May 15, 2011 · Replies 5 · May 16, 2011

Replies: 5

Views: 3K

Undergrad One question when we have a unpolarized ray and enters the polarized

May 16, 2011 · Replies 3 · May 16, 2011

Replies: 3

Views: 2K

Undergrad Hello, light freaks: UV radiant intensity of the sun at earth surface

May 11, 2011 · Replies 2 · May 16, 2011

Replies: 2

Views: 4K

Graduate Invisibility cloak possible? how close are we?

Mar 3, 2010 · Replies 13 · May 15, 2011

Replies: 13

Views: 5K

Graduate Can Photons Actually Orbit Massive Objects?

May 15, 2011 · Replies 2 · May 15, 2011

Replies: 2

Views: 2K

Undergrad What will be the speed of light?

May 14, 2011 · Replies 5 · May 14, 2011

Replies: 5

Views: 2K

Undergrad Young's Double Slits - Derivation & Formula

May 13, 2011 · Replies 2 · May 13, 2011

Replies: 2

Views: 2K

Undergrad Understanding the Metal Mesh Effect on Microwaves

Nov 6, 2010 · Replies 7 · May 13, 2011

Replies: 7

Views: 5K

Graduate On Physical Lines of Force: elasticity, density and the speed of light

Apr 1, 2010 · Replies 1 · May 13, 2011

Replies: 1

Views: 3K

Undergrad What causes the unpredictable path of lightning?

May 13, 2011 · Replies 1 · May 13, 2011

Replies: 1

Views: 1K

Graduate Evanescent waves, wavevector, and Poynting vector

May 3, 2011 · Replies 3 · May 12, 2011

Replies: 3

Views: 8K

Graduate Designing a special wide angle lens

May 9, 2011 · Replies 22 · May 12, 2011

Replies: 22

Views: 6K

Graduate Could Morse Code Be Instantaneous on a Million Light-Year Pole?

May 10, 2011 · Replies 11 · May 12, 2011

Replies: 11

Views: 5K

Undergrad Intensity of single slit and double slit

May 11, 2011 · Replies 1 · May 12, 2011

Replies: 1

Views: 4K

Graduate Two standing waves forming a traveling wave

May 11, 2011 · Replies 2 · May 11, 2011

Replies: 2

Views: 5K

Undergrad Is there plasma that doesn't radiate visible light? I think the

Apr 29, 2011 · Replies 36 · May 11, 2011

2

Replies: 36

Views: 6K

Graduate Change the direction of light without using matter

Apr 26, 2011 · Replies 16 · May 11, 2011

Replies: 16

Views: 6K

High School Any tutorial on optic physics using 2 lenses (+ and -)

May 9, 2011 · Replies 1 · May 9, 2011

Replies: 1

Views: 2K

High School Speed of light and small distances

May 8, 2011 · Replies 6 · May 8, 2011

Replies: 6

Views: 2K

Undergrad Variations in Refractive Index of atmosphere with altitude ?

Mar 17, 2011 · Replies 20 · May 8, 2011

Replies: 20

Views: 30K

High School Mixing Colors: Understand Red, Blue, Green & White

May 7, 2011 · Replies 13 · May 8, 2011

Replies: 13

Views: 8K

High School I was wondering would it be possible to have more than one rainbow

May 7, 2011 · Replies 15 · May 8, 2011

Replies: 15

Views: 3K

Undergrad Trapping Light: An Infinite Source of Energy?

May 6, 2011 · Replies 18 · May 7, 2011

Replies: 18

Views: 5K

Graduate Energy of interfering standing wave

May 5, 2011 · Replies 2 · May 7, 2011

Replies: 2

Views: 2K

Graduate Why does light change direction when entering a new medium?

May 4, 2011 · Replies 1 · May 7, 2011

Replies: 1

Views: 3K

Graduate Dark spot in Fraunhofer diffraction

May 6, 2011 · Replies 3 · May 6, 2011

Replies: 3

Views: 2K

Graduate Protons, Photons, and ionic states of matter with one type

May 4, 2011 · Replies 1 · May 5, 2011

Replies: 1

Views: 3K

Undergrad Cause of interference pattern in the Michelson Interferometer.

May 4, 2011 · Replies 6 · May 4, 2011

Replies: 6

Views: 12K

High School Is amplitude always perpendicular to the rest axis?in a wavelength

May 4, 2011 · Replies 1 · May 4, 2011

Replies: 1

Views: 2K

High School Wavelengths of different colour of light

May 2, 2011 · Replies 5 · May 3, 2011

Replies: 5

Views: 3K

Graduate Traveling at Light Speed Through Space: A Thought Experiment

Apr 29, 2011 · Replies 47 · May 2, 2011

2

Replies: 47

Views: 9K

Undergrad Monochromatic Light: Definition & Examples

Apr 29, 2011 · Replies 10 · May 1, 2011

Replies: 10

Views: 53K

Undergrad How Do EM Waves Stretch and Interact in Space?

May 1, 2011 · Replies 3 · May 1, 2011

Replies: 3

Views: 5K

Graduate (More or less conceptual) questions about the photon

Apr 28, 2011 · Replies 10 · Apr 29, 2011

Replies: 10

Views: 4K

High School Snell's Law and the particle model for light

Apr 28, 2011 · Replies 2 · Apr 29, 2011

Replies: 2

Views: 4K

Undergrad What Other Types of Information Can We Gather from Intergalactic Bodies?

Apr 27, 2011 · Replies 31 · Apr 28, 2011

2

Replies: 31

Views: 5K

Undergrad What Happens When a Laser Hits a Mirror Corner?

Apr 27, 2011 · Replies 6 · Apr 27, 2011

Replies: 6

Views: 3K

Undergrad Why Is an Image at Infinity Called Highly Magnified?

Apr 27, 2011 · Replies 1 · Apr 27, 2011

Replies: 1

Views: 4K

Undergrad Understanding Single Mode Fiber and Cladding Materials

Jan 9, 2006 · Replies 8 · Apr 27, 2011

Replies: 8

Views: 4K

Undergrad VIBGYOR: Black Letter's Place in the Glass Slab

Apr 26, 2011 · Replies 4 · Apr 27, 2011

Replies: 4

Views: 2K

High School What Happens When Mirrors Face Each Other?

Apr 26, 2011 · Replies 5 · Apr 27, 2011

Replies: 5

Views: 2K

High School Why does a rainbow stay still while it's raining?

Apr 26, 2011 · Replies 3 · Apr 27, 2011

Replies: 3

Views: 2K

High School Why is Light Rectilinear? Explaining Its Acceptance

Apr 25, 2011 · Replies 4 · Apr 26, 2011

Replies: 4

Views: 2K

Undergrad Light's Reach: How Far Does 1 Candela's Luminosity Go?

Apr 20, 2011 · Replies 47 · Apr 26, 2011

2

Replies: 47

Views: 7K

Undergrad Single slit interference and Diffraction Grating

Apr 26, 2011 · Replies 2 · Apr 26, 2011

Replies: 2

Views: 4K

Undergrad Can Negative Speed of Light Allow Time Travel?

Apr 25, 2011 · Replies 8 · Apr 25, 2011

Replies: 8

Views: 10K

Graduate Curved Diffraction - Explaining Why Light Behaves So

Apr 22, 2011 · Replies 2 · Apr 25, 2011

Replies: 2

Views: 2K

Undergrad Laser Split Into Camera Lens Pattern: What is it?

Apr 22, 2011 · Replies 1 · Apr 23, 2011

Replies: 1

Views: 3K

Undergrad Is it necessary to talk about photons when discussing interference in light?

Apr 21, 2011 · Replies 11 · Apr 23, 2011

Replies: 11

Views: 4K

High School Solving 910nm-382nm=528nm: Is It Feasible?

Oct 29, 2008 · Replies 3 · Apr 23, 2011

Replies: 3

Views: 5K

High School Light Reflection between Mirrors: Facts & Myths

May 23, 2008 · Replies 18 · Apr 23, 2011

Replies: 18

Views: 11K

Graduate What happens if you fire a photon at an atom?

Apr 9, 2011 · Replies 2 · Apr 23, 2011

Replies: 2

Views: 2K

High School Why Do Bright Lights Have Rays

Apr 21, 2011 · Replies 4 · Apr 22, 2011

Replies: 4

Views: 6K

High School Are There Safe Laser Pointers for Eye Use in Clubs and Shows?

Apr 21, 2011 · Replies 7 · Apr 21, 2011

Replies: 7

Views: 3K

Graduate Infinity corrected lens - expanding before tube lens?

Apr 12, 2011 · Replies 4 · Apr 21, 2011

Replies: 4

Views: 6K

Undergrad Index of Refraction: Find Coating & Thickness for 600nm Wavelength

Apr 21, 2011 · Replies 1 · Apr 21, 2011

Replies: 1

Views: 3K

Graduate Physics of laser pointer attachments: stars, butterflies, etc.

Apr 20, 2011 · Replies 2 · Apr 21, 2011

Replies: 2

Views: 8K

High School Natural magnification(special circumstances)

Apr 17, 2011 · Replies 7 · Apr 20, 2011

Replies: 7

Views: 3K

Undergrad Sky Polarization: Understanding & Experiments

Jan 22, 2011 · Replies 4 · Apr 20, 2011

Replies: 4

Views: 4K

Undergrad Deriving the lens formula for a convex lens-say

Jan 24, 2011 · Replies 5 · Apr 20, 2011

Replies: 5

Views: 10K

Graduate Question: atomic polarizability (Purcell book)

Apr 19, 2011 · Replies 2 · Apr 19, 2011

Replies: 2

Views: 3K

Undergrad Supersonic Flight: How Does Speed Impact Lift?

Apr 18, 2011 · Replies 2 · Apr 19, 2011

Replies: 2

Views: 2K

Graduate Laser physics question about Milonni book

Apr 18, 2011 · Replies 1 · Apr 18, 2011

Replies: 1

Views: 4K

Undergrad Can You Hear Sound in Room Corner by Door?

Apr 17, 2011 · Replies 18 · Apr 18, 2011

Replies: 18

Views: 3K

Graduate Example of calculation of radiance

Apr 15, 2011 · Replies 5 · Apr 18, 2011

Replies: 5

Views: 13K

Undergrad Fresnel Zone: Ellipsoids, Energy & Wavelengths

Apr 18, 2011 · Replies 1 · Apr 18, 2011

Replies: 1

Views: 3K

Graduate Light in medium, time gets affected?

Apr 13, 2011 · Replies 3 · Apr 18, 2011

Replies: 3

Views: 2K

Graduate Refractive index of materials at rf frequencies to make a smaller wire antenna

Apr 9, 2011 · Replies 3 · Apr 18, 2011

Replies: 3

Views: 5K

Undergrad Thin Film Interference and phasing

Apr 12, 2011 · Replies 1 · Apr 16, 2011

Replies: 1

Views: 5K

Graduate What is more damaging: average power or peak power of a pulsed laser?

Apr 11, 2011 · Replies 8 · Apr 15, 2011

Replies: 8

Views: 7K

Undergrad Scavenging Energy from Radio Waves: A Study at A Level | Sources & Results

Apr 14, 2011 · Replies 6 · Apr 15, 2011

Replies: 6

Views: 4K

Graduate Why might light from distant galaxies not reach us?

Apr 11, 2011 · Replies 31 · Apr 15, 2011

2

Replies: 31

Views: 6K

High School How does a linear accelerator produce X-rays?

Apr 15, 2011 · Replies 1 · Apr 15, 2011

Replies: 1

Views: 11K

High School Refraction Phenomenon: How Light Rays Travel in Straight Paths

Apr 13, 2011 · Replies 6 · Apr 15, 2011

Replies: 6

Views: 4K

High School Why Does Light Travel Through Glass But Not Opaque Objects?

Apr 4, 2011 · Replies 6 · Apr 15, 2011

Replies: 6

Views: 2K

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