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High School Why does light appear to slow down in different mediums?

Dec 1, 2003 · Replies 11 · Dec 8, 2003

Replies: 11

Views: 3K

Graduate Locking, at the speed of light.

Dec 7, 2003 · Replies 4 · Dec 8, 2003

Replies: 4

Views: 3K

High School Does Light Actually Have Mass?

Nov 26, 2003 · Replies 27 · Dec 5, 2003

Replies: 27

Views: 7K

Graduate Can Single Photons Ever Exceed the Speed of Light?

Nov 30, 2003 · Replies 5 · Dec 4, 2003

Replies: 5

Views: 4K

Graduate Why light diffracts and was directed to QED by Feynman

Dec 2, 2003 · Replies 1 · Dec 2, 2003

Replies: 1

Views: 2K

Undergrad Can a fluorescent light bulb be used as an electrical generator?

Dec 1, 2003 · Replies 3 · Dec 1, 2003

Replies: 3

Views: 6K

High School Converging and diverging lenses

Nov 29, 2003 · Replies 3 · Nov 30, 2003

Replies: 3

Views: 3K

Graduate Newton assumed mass of a light particle is approaching zero

Nov 29, 2003 · Replies 1 · Nov 29, 2003

Replies: 1

Views: 3K

High School Question about shadows and what this shows about light.

Nov 29, 2003 · Replies 1 · Nov 29, 2003

Replies: 1

Views: 3K

Undergrad Why is the speed of light constant for all observers?

Nov 11, 2003 · Replies 74 · Nov 26, 2003

3

Replies: 74

Views: 18K

Undergrad Understanding Light Reflection and Black Bodies in Nature

Nov 23, 2003 · Replies 3 · Nov 23, 2003

Replies: 3

Views: 7K

High School Will We See a Beam of Light Racing Through the Solar System?

Nov 20, 2003 · Replies 11 · Nov 23, 2003

Replies: 11

Views: 3K

Graduate Can Light Be a Product of Higher Dimensions?

Nov 22, 2003 · Replies 4 · Nov 23, 2003

Replies: 4

Views: 4K

High School How Do Lumens, Lux, and Candela Differ in Measuring Light?

Nov 22, 2003 · Replies 2 · Nov 22, 2003

Replies: 2

Views: 3K

Undergrad How to Prove AI = AT + AR for Wave Amplitudes?

Nov 17, 2003 · Replies 1 · Nov 18, 2003

Replies: 1

Views: 3K

Undergrad Why Does Light Diffract When Passing Through an Aperture?

Nov 12, 2003 · Replies 6 · Nov 12, 2003

Replies: 6

Views: 14K

High School Slow Light: Experiments & Observations

Nov 10, 2003 · Replies 1 · Nov 10, 2003

Replies: 1

Views: 4K

Relativity/speed of light/gravity

Nov 8, 2003 · Replies 2 · Nov 8, 2003

Replies: 2

Views: 3K

Undergrad What happens to relativity when light is slowed down?

Oct 24, 2003 · Replies 23 · Nov 6, 2003

Replies: 23

Views: 12K

Undergrad Can Single-Slit Diffraction Occur in Two Dimensions?

Nov 6, 2003 · Replies 2 · Nov 6, 2003

Replies: 2

Views: 4K

Graduate Is the speed of light really medium dependent?

Oct 25, 2003 · Replies 28 · Nov 5, 2003

Replies: 28

Views: 7K

Graduate Can a Pulsed Plasma Laser Be Created Using Existing Laser Components?

Nov 4, 2003 · Replies 9 · Nov 5, 2003

Replies: 9

Views: 6K

High School A car travelling at the speed of lights turns its brights on

Nov 3, 2003 · Replies 18 · Nov 5, 2003

Replies: 18

Views: 4K

Graduate What is the Doppler shift equation for light?

Nov 5, 2003 · Replies 3 · Nov 5, 2003

Replies: 3

Views: 3K

Undergrad Lasers: Pumping & Meaning of "Pumping a Transition

Nov 4, 2003 · Replies 1 · Nov 4, 2003

Replies: 1

Views: 3K

Graduate New Geometrical Polar-Ring Solution for Magic Numbered Nuclei

Oct 29, 2003 · Replies 2 · Nov 3, 2003

Replies: 2

Views: 2K

Graduate Unraveling the Controversy: Understanding Light's Dimensions and Properties

Oct 14, 2003 · Replies 30 · Oct 25, 2003

2

Replies: 30

Views: 5K

Graduate How can the Aumic Theory potentially challenge existing understandings of light?

Sep 15, 2003 · Replies 12 · Oct 24, 2003

Replies: 12

Views: 3K

Undergrad When does light travel from a glowing iron rod to a sheet of paper?

Oct 22, 2003 · Replies 11 · Oct 23, 2003

Replies: 11

Views: 3K

Graduate Coriolis effect - polarised gravity?

Oct 15, 2003 · Replies 23 · Oct 22, 2003

Replies: 23

Views: 7K

Graduate Real world problem for your pleasure.

Oct 22, 2003 · Replies 2 · Oct 22, 2003

Replies: 2

Views: 3K

Graduate Solving the Mystery of Light Gravity

Jul 31, 2003 · Replies 28 · Oct 20, 2003

Replies: 28

Views: 6K

Graduate Faster Light: Physics Impacts of New Discovery

Oct 16, 2003 · Replies 13 · Oct 17, 2003

Replies: 13

Views: 3K

A little lightning to the head and we have magnification

Sep 23, 2003 · Replies 24 · Oct 17, 2003

Replies: 24

Views: 8K

Graduate Light Carries Time: Nature's Compensation

Oct 16, 2003 · Replies 1 · Oct 17, 2003

Replies: 1

Views: 3K

Undergrad Intensity and Relative Amplitude

Oct 16, 2003 · Replies 7 · Oct 16, 2003

Replies: 7

Views: 15K

Graduate Does Light Speed Relate to Sun's Rate of Burning?

Oct 15, 2003 · Replies 3 · Oct 16, 2003

Replies: 3

Views: 2K

Graduate Why does time stop when we travel at the speed of light?

Oct 2, 2003 · Replies 4 · Oct 3, 2003

Replies: 4

Views: 4K

High School Does Light Have Mass? Flannigan's Take on Photon Mass

Sep 30, 2003 · Replies 23 · Oct 2, 2003

Replies: 23

Views: 6K

Graduate Photon energy in an expanding Universe

Sep 23, 2003 · Replies 9 · Oct 2, 2003

Replies: 9

Views: 5K

High School The Mystery of Light Particle Mass

Sep 3, 2003 · Replies 49 · Sep 29, 2003

2

Replies: 49

Views: 10K

Undergrad What causes waves to bend around objects?

Sep 22, 2003 · Replies 5 · Sep 25, 2003

Replies: 5

Views: 22K

High School A-Level Physics: Interference & Diffraction

Sep 23, 2003 · Replies 2 · Sep 24, 2003

Replies: 2

Views: 3K

Undergrad Lights interaction with matter

Sep 15, 2003 · Replies 14 · Sep 22, 2003

Replies: 14

Views: 5K

Undergrad Three forces, each having a magnitude

Sep 21, 2003 · Replies 1 · Sep 21, 2003

Replies: 1

Views: 3K

How much light does your average home mirror reflect?

Sep 15, 2003 · Replies 4 · Sep 16, 2003

Replies: 4

Views: 22K

High School Magnitude of g change and mt everest

Sep 14, 2003 · Replies 1 · Sep 14, 2003

Replies: 1

Views: 4K

Undergrad How Do Different Light Sources Affect Emission and Absorption Spectra?

Sep 12, 2003 · Replies 1 · Sep 13, 2003

Replies: 1

Views: 4K

Graduate Investigating the Constancy of Light-Speed: A Call to Greater Knowledge

Sep 6, 2003 · Replies 3 · Sep 11, 2003

Replies: 3

Views: 4K

Graduate Is the Mass of a Photon Concentrated on One Side?

Sep 6, 2003 · Replies 8 · Sep 8, 2003

Replies: 8

Views: 4K

Graduate Question on effects of gravity on light and time

Aug 27, 2003 · Replies 5 · Sep 5, 2003

Replies: 5

Views: 5K

High School Light Beam Travel: Can I See Light Standing Still?

Sep 3, 2003 · Replies 14 · Sep 4, 2003

Replies: 14

Views: 4K

Graduate Quasar Enigmas In 'decresing Light Speed' Cosmolog

Sep 1, 2003 · Replies 7 · Sep 4, 2003

Replies: 7

Views: 11K

Graduate Wave/Particle Duality in Light Quanta

Aug 28, 2003 · Replies 15 · Aug 31, 2003

Replies: 15

Views: 5K

Undergrad How Does Light Interact with Gravity Despite Being Massless?

Aug 31, 2003 · Replies 5 · Aug 31, 2003

Replies: 5

Views: 3K

Undergrad Polarized Filters: The Surprising Effect of Red Light on Highway Headlights

Aug 22, 2003 · Replies 5 · Aug 25, 2003

Replies: 5

Views: 4K

Stoping light or atleast slowing it down

Jul 31, 2003 · Replies 10 · Aug 24, 2003

Replies: 10

Views: 3K

Undergrad Relativity, time and the speed of light

Jul 10, 2003 · Replies 56 · Aug 23, 2003

2

Replies: 56

Views: 10K

Undergrad Understanding Photons: Insights from CERN Scientists

Aug 22, 2003 · Replies 2 · Aug 22, 2003

Replies: 2

Views: 3K

New Theory on the Nature of Light

Jul 21, 2003 · Replies 16 · Aug 21, 2003

Replies: 16

Views: 11K

Graduate Why Doesn't Light Have Infinite Mass and Energy in Motion?

Aug 20, 2003 · Replies 3 · Aug 20, 2003

Replies: 3

Views: 3K

Graduate Understanding the Nature of Light: A New Perspective

Jul 19, 2003 · Replies 3 · Aug 20, 2003

Replies: 3

Views: 4K

Undergrad Understanding Refraction and Snel's Law: Common Questions Answered

Aug 14, 2003 · Replies 14 · Aug 19, 2003

Replies: 14

Views: 10K

How Can Photons Have Energy Without Mass?

Aug 7, 2003 · Replies 6 · Aug 18, 2003

Replies: 6

Views: 4K

Undergrad Inverse square law .intensity-brightness-luminosity-distance

Aug 18, 2003 · Replies 1 · Aug 18, 2003

Replies: 1

Views: 10K

High School Watching Light Travel in a Coil: Is It Possible?

Aug 15, 2003 · Replies 2 · Aug 16, 2003

Replies: 2

Views: 2K

Undergrad What function does the sign wave represent in sound and light?

Aug 12, 2003 · Replies 1 · Aug 12, 2003

Replies: 1

Views: 6K

High School What causes those reflecton pools on the road on a sunny day?

Aug 9, 2003 · Replies 12 · Aug 11, 2003

Replies: 12

Views: 7K

Undergrad Travelling at the speed of light?

Aug 4, 2003 · Replies 6 · Aug 8, 2003

Replies: 6

Views: 5K

Undergrad Where Does the Energy Go During Deconstructive Interference?

Aug 7, 2003 · Replies 8 · Aug 8, 2003

Replies: 8

Views: 3K

Graduate Is it possible to increase the speed of light? (transmissions)

Aug 6, 2003 · Replies 20 · Aug 7, 2003

Replies: 20

Views: 9K

Graduate What is the maximum energy that a photon can carry?

Jul 30, 2003 · Replies 19 · Aug 6, 2003

Replies: 19

Views: 12K

High School Stopping Microwave Sensors with Aluminum Foil for Homeowners

Aug 4, 2003 · Replies 12 · Aug 6, 2003

Replies: 12

Views: 16K

Graduate How does holographic dispersion create three-dimensional images?

Jun 11, 2003 · Replies 6 · Aug 2, 2003

Replies: 6

Views: 4K

Graduate What causes luminescence in sandblasted coated materials?

Jul 4, 2003 · Replies 3 · Jul 31, 2003

Replies: 3

Views: 3K

Besides Sunlight, what else is there that's useable?

Jul 25, 2003 · Replies 12 · Jul 31, 2003

Replies: 12

Views: 4K

Undergrad Need Help Finding Magnitude of Uniform Cylinder

Jul 3, 2003 · Replies 1 · Jul 31, 2003

Replies: 1

Views: 3K

Graduate Does Loop Quantum Gravity Suggest Photons Can Travel Faster Than Light?

Jul 25, 2003 · Replies 6 · Jul 26, 2003

Replies: 6

Views: 4K

Undergrad Could a Light-Transmitting Antenna Revolutionize Communication?

Jul 24, 2003 · Replies 6 · Jul 25, 2003

Replies: 6

Views: 4K

Graduate Do All Massless Particles Travel at the Speed of Light?

Jul 13, 2003 · Replies 31 · Jul 20, 2003

2

Replies: 31

Views: 6K

Graduate Faster than the speed of light

May 30, 2003 · Replies 61 · Jul 16, 2003

3

Replies: 61

Views: 11K

High School How can you move at the speed of light?

Jul 7, 2003 · Replies 6 · Jul 15, 2003

Replies: 6

Views: 5K

Undergrad Wave Reflection: Absorption & Reflection Factors

Jun 8, 2003 · Replies 13 · Jul 14, 2003

Replies: 13

Views: 5K

High School Catching Up to Light: The Surprising Truth About Traveling at High Speeds

Jul 11, 2003 · Replies 10 · Jul 14, 2003

Replies: 10

Views: 5K

High School Achieving Invisibility with Water Diffraction: Is it Possible?

Jun 30, 2003 · Replies 7 · Jul 10, 2003

Replies: 7

Views: 3K

Graduate Measuring the wavelength of light?

Jul 4, 2003 · Replies 13 · Jul 6, 2003

Replies: 13

Views: 7K

Graduate Question on Reducing Dark Noise in Photodiodes

Jul 4, 2003 · Replies 5 · Jul 5, 2003

Replies: 5

Views: 4K

Undergrad A laser is a device that uses light flashes to excite the atoms

Jun 26, 2003 · Replies 2 · Jun 30, 2003

Replies: 2

Views: 2K

Graduate Is the Speed of Light Affected by Gravity?

Jun 25, 2003 · Replies 10 · Jun 27, 2003

Replies: 10

Views: 6K

Graduate Can Electricity Enable Faster-Than-Light Travel?

Jun 25, 2003 · Replies 1 · Jun 25, 2003

Replies: 1

Views: 3K

Undergrad Calculate the energy and wavelength of the photon.

Jun 18, 2003 · Replies 6 · Jun 25, 2003

Replies: 6

Views: 3K

Undergrad Light, black holes and gravity

Jun 16, 2003 · Replies 12 · Jun 24, 2003

Replies: 12

Views: 5K

Graduate Refraction Index Conventions: Complex Reflection/Transmission Coeff.

Jun 20, 2003 · Replies 1 · Jun 23, 2003

Replies: 1

Views: 3K

High School Why Does Light Get Refracted When Traveling?

Jun 19, 2003 · Replies 10 · Jun 22, 2003

Replies: 10

Views: 6K

High School Why Does the Sun Look Yellow When Paper Looks White?

Jun 14, 2003 · Replies 8 · Jun 21, 2003

Replies: 8

Views: 3K

Undergrad So why do different media slow light down?

Jun 19, 2003 · Replies 2 · Jun 19, 2003

Replies: 2

Views: 11K

Undergrad Calculating Spectrum Width of White Light on a Diffraction Grating

Jun 15, 2003 · Replies 1 · Jun 18, 2003

Replies: 1

Views: 4K

Graduate How to diffract a bowling ball

Jun 4, 2003 · Replies 18 · Jun 17, 2003

Replies: 18

Views: 6K

Graduate How to Exceed The Velocity Of Light 2

Jun 16, 2003 · Replies 1 · Jun 17, 2003

Replies: 1

Views: 3K

Undergrad What Unique Behaviour of Light Does the Wave Model Explain?

Jun 14, 2003 · Replies 2 · Jun 15, 2003

Replies: 2

Views: 4K

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