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High School Refraction Index: Does Temperature Change It?

Jul 2, 2004 · Replies 4 · Jul 2, 2004

Replies: 4

Views: 4K

Graduate Why Can't Photons Orbit Around Massive Objects?

Jul 1, 2004 · Replies 21 · Jul 2, 2004

Replies: 21

Views: 5K

Graduate 4 newb qstns:ageless light,physical change,time,twins

Jun 29, 2004 · Replies 9 · Jul 2, 2004

Replies: 9

Views: 3K

Graduate Sunlight, Mirrors & Lasers: What Happens?

Jul 2, 2004 · Replies 1 · Jul 2, 2004

Replies: 1

Views: 4K

High School How Does 3D Laser Imagery Create Realistic Images?

Jun 29, 2004 · Replies 12 · Jul 2, 2004

Replies: 12

Views: 4K

Graduate Finding the Gold Coating Thickness for 50% Transmittance and 50% Reflectance

Jun 29, 2004 · Replies 1 · Jun 29, 2004

Replies: 1

Views: 3K

Graduate What happens to a photon after it is detected?

Jun 27, 2004 · Replies 20 · Jun 29, 2004

Replies: 20

Views: 5K

High School How much does the photon weighs?

Jun 7, 2004 · Replies 20 · Jun 29, 2004

Replies: 20

Views: 7K

High School Can holographic displays be created without glass or solids?

Jun 28, 2004 · Replies 1 · Jun 28, 2004

Replies: 1

Views: 2K

Undergrad Absorbing Light: What Determines Reflected vs Absorbed Photons?

Jun 27, 2004 · Replies 1 · Jun 27, 2004

Replies: 1

Views: 5K

Undergrad Increasing Laser Power - Can Mirrors Create Infinite Power?

Jun 23, 2004 · Replies 17 · Jun 27, 2004

Replies: 17

Views: 8K

Graduate Photons are made from gravitons

Jun 25, 2004 · Replies 13 · Jun 26, 2004

Replies: 13

Views: 5K

Undergrad How can I limit the divergence of my laser using a telescope?

Jun 23, 2004 · Replies 3 · Jun 24, 2004

Replies: 3

Views: 3K

High School Heating Ice in Microwaves: How Does It Work?

Jun 23, 2004 · Replies 21 · Jun 24, 2004

Replies: 21

Views: 14K

High School Can a sphere has a critial angle

Jun 23, 2004 · Replies 3 · Jun 24, 2004

Replies: 3

Views: 2K

High School What is BEAM WAIST in lasers and where it is located?

Jun 24, 2004 · Replies 1 · Jun 24, 2004

Replies: 1

Views: 2K

Undergrad Ridiculous to think that light is the only static

Jun 22, 2004 · Replies 10 · Jun 23, 2004

Replies: 10

Views: 2K

High School Rainbow's Red & Blue: Why Light Refraction is Reversed

Jun 23, 2004 · Replies 1 · Jun 23, 2004

Replies: 1

Views: 2K

High School Can You See Light in a Vacuum with a Flashlight?

Jun 16, 2004 · Replies 18 · Jun 22, 2004

Replies: 18

Views: 8K

Undergrad Why speed of light is constant?

Jun 14, 2004 · Replies 45 · Jun 21, 2004

2

Replies: 45

Views: 23K

Graduate Why won't the bright spot in my Michelson Interferometer turn dark?

Jun 18, 2004 · Replies 3 · Jun 20, 2004

Replies: 3

Views: 4K

Undergrad Will a Lens's Focal Point Change in Water?

Jun 20, 2004 · Replies 1 · Jun 20, 2004

Replies: 1

Views: 3K

Graduate Do Photons Have a Nucleus or Electrons?

Jun 19, 2004 · Replies 5 · Jun 19, 2004

Replies: 5

Views: 3K

Undergrad Can air, glass, and water slow down the speed of light?

Jun 17, 2004 · Replies 7 · Jun 18, 2004

Replies: 7

Views: 2K

Undergrad How does light travel in a vacuum?

Jun 16, 2004 · Replies 4 · Jun 18, 2004

Replies: 4

Views: 2K

Undergrad Global Dimming, Less Light Reaching Us

May 31, 2004 · Replies 1 · Jun 17, 2004

Replies: 1

Views: 3K

High School Why Does a Black Object Reflect Light Despite Absorbing All Colours?

Jun 16, 2004 · Replies 4 · Jun 17, 2004

Replies: 4

Views: 4K

Graduate Searching for a graduate program in optics

Jun 17, 2004 · Replies 1 · Jun 17, 2004

Replies: 1

Views: 4K

Graduate Smaller than Photon: FTL Communication Possibility?

Jun 15, 2004 · Replies 10 · Jun 17, 2004

Replies: 10

Views: 9K

High School Between two mirrors. Real experiment.

May 31, 2004 · Replies 43 · Jun 16, 2004

2

Replies: 43

Views: 8K

High School Can anyone explain how x-ray been produced

Jun 7, 2004 · Replies 7 · Jun 15, 2004

Replies: 7

Views: 4K

High School Laser or the torchlight does not bend 90 degrees?

Jun 9, 2004 · Replies 13 · Jun 14, 2004

Replies: 13

Views: 3K

Undergrad Need some clarifications about light speed

Jun 11, 2004 · Replies 29 · Jun 13, 2004

Replies: 29

Views: 4K

Undergrad Light and Redshift in material?

Jun 13, 2004 · Replies 1 · Jun 13, 2004

Replies: 1

Views: 2K

High School Microwaves don t pass thru the door of the microwave oven

Jun 6, 2004 · Replies 1 · Jun 7, 2004

Replies: 1

Views: 2K

High School Understanding Color Perception: Why Do We See Different Colors?

May 22, 2004 · Replies 5 · Jun 4, 2004

Replies: 5

Views: 4K

Graduate What is meant by SINGLE PULSE in the output of Q-sWITCHED laser

Jun 4, 2004 · Replies 1 · Jun 4, 2004

Replies: 1

Views: 2K

Graduate Photon self-interference interpreted as inside-out dynamic

May 28, 2004 · Replies 1 · Jun 1, 2004

Replies: 1

Views: 4K

Undergrad I find a way to go faster than light

May 31, 2004 · Replies 1 · May 31, 2004

Replies: 1

Views: 2K

Are Laser Guns and Lightsabers Practical Weapons or Just Sci-Fi Fantasy?

May 28, 2004 · Replies 6 · May 30, 2004

Replies: 6

Views: 2K

Graduate Faster than light-yes -but how?

May 25, 2004 · Replies 5 · May 28, 2004

Replies: 5

Views: 3K

Undergrad Understanding Elliptical Formulas: Focal Point Discrepancy Explained

May 26, 2004 · Replies 3 · May 26, 2004

Replies: 3

Views: 4K

Graduate Faster than light by a long way

May 25, 2004 · Replies 1 · May 26, 2004

Replies: 1

Views: 2K

Undergrad Light Intensity at Point Sources: Impact on Energy Falloff?

May 25, 2004 · Replies 1 · May 25, 2004

Replies: 1

Views: 3K

Undergrad Predicting Light Bounce: Mirror vs Wall

May 22, 2004 · Replies 6 · May 24, 2004

Replies: 6

Views: 11K

Graduate What Are Alternative Photon Models and Their Implications?

May 22, 2004 · Replies 3 · May 22, 2004

Replies: 3

Views: 3K

Graduate Dark energy redshifts cmbr photons

May 20, 2004 · Replies 3 · May 21, 2004

Replies: 3

Views: 3K

High School Whatever happened to the Particle Theory of Light?

May 18, 2004 · Replies 3 · May 19, 2004

Replies: 3

Views: 5K

Graduate Expansion Greater than Light Speed?

Apr 26, 2004 · Replies 34 · May 18, 2004

2

Replies: 34

Views: 6K

Undergrad What RPM Gains Can Be Expected from a Lighter Axle on a Go Kart?

May 13, 2004 · Replies 6 · May 17, 2004

Replies: 6

Views: 3K

Undergrad How Can Photons of the Same Size and Speed Carry Different Energy Levels?

May 12, 2004 · Replies 2 · May 16, 2004

Replies: 2

Views: 2K

Graduate What is Frictional Amplitude in Laser Cutting?

May 14, 2004 · Replies 1 · May 15, 2004

Replies: 1

Views: 3K

Graduate Maxwell's Equation: Proving the Speed of Light

May 6, 2004 · Replies 5 · May 13, 2004

Replies: 5

Views: 4K

Undergrad Why is the speed of light constant regardless of perspective?

May 10, 2004 · Replies 8 · May 12, 2004

Replies: 8

Views: 6K

Graduate Polarizations for a photon in vacuuo

May 10, 2004 · Replies 1 · May 10, 2004

Replies: 1

Views: 3K

High School Convex mirror, and you point a light at it horizontally

May 9, 2004 · Replies 2 · May 9, 2004

Replies: 2

Views: 2K

Undergrad In-Phase and Out-Phase Wave Interference: What Happens?

May 8, 2004 · Replies 5 · May 9, 2004

Replies: 5

Views: 17K

High School How can we find the focus in a lens

May 9, 2004 · Replies 1 · May 9, 2004

Replies: 1

Views: 2K

Undergrad What is the relative velocity of flight?

May 7, 2004 · Replies 2 · May 8, 2004

Replies: 2

Views: 3K

Graduate Is the Speed of Light Constant in All Reference Frames?

Apr 9, 2004 · Replies 46 · May 7, 2004

2

Replies: 46

Views: 6K

Graduate Does Light have a Ground State ?

May 3, 2004 · Replies 1 · May 4, 2004

Replies: 1

Views: 2K

Undergrad Laser, color and speed of light

Jul 14, 2003 · Replies 15 · May 4, 2004

Replies: 15

Views: 17K

Undergrad Why Does Steamy Window-Pans Appear Opaque? Experts Explain

May 3, 2004 · Replies 5 · May 4, 2004

Replies: 5

Views: 3K

Graduate Guiding Wave Through Diffraction in Photonic Crystal Fiber

Apr 29, 2004 · Replies 2 · May 2, 2004

Replies: 2

Views: 3K

Graduate Can Spaceships Reach Light Speed Due to Permeability and Permittivity?

Apr 28, 2004 · Replies 7 · May 1, 2004

Replies: 7

Views: 4K

Undergrad Questions About Light: Mass, Inertia & Acceleration

Apr 30, 2004 · Replies 5 · May 1, 2004

Replies: 5

Views: 2K

Graduate The Truth About the Speed of Light: Debunking the Myth of an Absolute Limit

Apr 27, 2004 · Replies 6 · May 1, 2004

Replies: 6

Views: 3K

High School Questions on Geometrical Optics Answered

Apr 28, 2004 · Replies 1 · Apr 29, 2004

Replies: 1

Views: 3K

Undergrad Exploring the Science Behind Non-Reflective Coatings for Cameras and Binoculars

Apr 27, 2004 · Replies 3 · Apr 27, 2004

Replies: 3

Views: 6K

Graduate Nature of Light Speed's Maximum

Apr 23, 2004 · Replies 17 · Apr 27, 2004

Replies: 17

Views: 3K

Undergrad Why is the speed of light used in the equation E=mc^2?

Apr 24, 2004 · Replies 7 · Apr 25, 2004

Replies: 7

Views: 3K

High School Does Gravity Cause Refraction Similar to Light?

Apr 23, 2004 · Replies 3 · Apr 25, 2004

Replies: 3

Views: 3K

High School Interference, Diffraction, Diffraction Grading

Apr 23, 2004 · Replies 1 · Apr 23, 2004

Replies: 1

Views: 5K

Graduate Speed of light is measured by all observers

Apr 18, 2004 · Replies 66 · Apr 23, 2004

3

Replies: 66

Views: 8K

Undergrad Why we use composed lentiform in optical science?

Apr 23, 2004 · Replies 1 · Apr 23, 2004

Replies: 1

Views: 2K

Graduate Foundational Value of Light: Physics Foundations & Human Logic

Apr 2, 2004 · Replies 26 · Apr 23, 2004

Replies: 26

Views: 5K

Undergrad Polarization of skylight, and polarization by reflection

Apr 22, 2004 · Replies 1 · Apr 22, 2004

Replies: 1

Views: 7K

Experience Realistic Lens Simulation with Our Convex Lens Program

Apr 21, 2004 · Replies 3 · Apr 21, 2004

Replies: 3

Views: 6K

High School Speed of Light vs. Sound: What Would Change?

Apr 21, 2004 · Replies 3 · Apr 21, 2004

Replies: 3

Views: 2K

Graduate Why Does a Diffraction Grating Not Show Intermediate Intensity Patterns?

Apr 19, 2004 · Replies 1 · Apr 20, 2004

Replies: 1

Views: 3K

High School Light Refraction and Wavelength / Frequency

Apr 18, 2004 · Replies 2 · Apr 18, 2004

Replies: 2

Views: 7K

Graduate What are the implications of an undetectable particle in the field of science?

Apr 13, 2004 · Replies 5 · Apr 14, 2004

Replies: 5

Views: 2K

Undergrad Speed of light equal for all observers

Mar 6, 2004 · Replies 4 · Apr 13, 2004

Replies: 4

Views: 8K

Undergrad Can the Brain Differentiate Individual Sound Waves in Superposition?

Apr 4, 2004 · Replies 6 · Apr 12, 2004

Replies: 6

Views: 8K

Graduate The Speed of Light = Zero: Is This the Ultimate Limit?

Apr 7, 2004 · Replies 13 · Apr 12, 2004

Replies: 13

Views: 9K

Graduate Light speed relative to universal speed

Apr 6, 2004 · Replies 9 · Apr 12, 2004

Replies: 9

Views: 4K

High School What Did Gustaf Dalén Invent to Win the Nobel Prize for Physics?

Apr 12, 2004 · Replies 2 · Apr 12, 2004

Replies: 2

Views: 2K

High School What is the angle of reflection

Apr 9, 2004 · Replies 9 · Apr 11, 2004

Replies: 9

Views: 3K

Graduate Photon Manipulation: Can We Redirect and Teleport?

Apr 7, 2004 · Replies 22 · Apr 10, 2004

Replies: 22

Views: 5K

Graduate Faster than Light: 2D Photon Field?

Dec 7, 2003 · Replies 2 · Apr 9, 2004

Replies: 2

Views: 3K

Graduate Is it possible that light doesn't 'propagate' in a vacuum?

Apr 5, 2004 · Replies 13 · Apr 7, 2004

Replies: 13

Views: 3K

High School Is it possible to travel 1000 light years in an instant at the speed of light?

Apr 6, 2004 · Replies 1 · Apr 6, 2004

Replies: 1

Views: 2K

High School Luminous vs. Nonluminous Light Sources

Mar 17, 2003 · Replies 6 · Apr 6, 2004

Replies: 6

Views: 7K

High School Calculating Focal Length Given L & U: Uncertainties Explained

Apr 5, 2004 · Replies 1 · Apr 5, 2004

Replies: 1

Views: 2K

Graduate Can Light Radiation Really Convert into Matter?

Mar 17, 2004 · Replies 31 · Apr 3, 2004

2

Replies: 31

Views: 6K

Undergrad What Determines the Constant Speed of Light?

Mar 26, 2004 · Replies 132 · Apr 2, 2004

5

Replies: 132

Views: 13K

Undergrad How far does a red laser beam travel in a mirrored box after 10 seconds?

Apr 1, 2004 · Replies 10 · Apr 2, 2004

Replies: 10

Views: 3K

Graduate Photons are clocks and SR says they shouldn't tick

Apr 1, 2004 · Replies 9 · Apr 2, 2004

Replies: 9

Views: 3K

Graduate SR and one-way speed of light tests

Aug 7, 2003 · Replies 100 · Apr 2, 2004

4

Replies: 100

Views: 16K

Undergrad Unraveling the Mystery of Time vs Light: A Question for Physics Enthusiasts

Jan 1, 2004 · Replies 11 · Mar 31, 2004

Replies: 11

Views: 4K

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