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Graduate Thickness of a partially reflective copper mirror

Apr 1, 2016 · Replies 4 · Apr 2, 2016

Replies: 4

Views: 1K

Undergrad Why Does CFL Lighting Cause a Violet Line in Laundry Detergent?

Mar 30, 2016 · Replies 2 · Apr 1, 2016

Replies: 2

Views: 2K

Undergrad Refraction, wavelength and frequency

Mar 31, 2016 · Replies 11 · Apr 1, 2016

Replies: 11

Views: 6K

High School Why Does Snell's Law Give Incorrect Results When Using Certain Formulas?

Mar 31, 2016 · Replies 3 · Mar 31, 2016

Replies: 3

Views: 1K

Graduate Is there a limit to the amount of info in reflected light?

Mar 24, 2016 · Replies 63 · Mar 31, 2016

3

Replies: 63

Views: 6K

Undergrad Do we use optics in other branches of physics ?

Mar 31, 2016 · Replies 2 · Mar 31, 2016

Replies: 2

Views: 1K

Undergrad I don't get the Slowly Varying Envelope Approximation

Mar 31, 2016 · Replies 2 · Mar 31, 2016

Replies: 2

Views: 2K

Undergrad Why do eyes only see in straight lines? (Light Physics)

Mar 30, 2016 · Replies 4 · Mar 31, 2016

Replies: 4

Views: 5K

Graduate Recoil on mirrors and conservation of momentum

Mar 28, 2016 · Replies 12 · Mar 28, 2016

Replies: 12

Views: 7K

Graduate Laser frequency doubling range for nonlinear crystals

Mar 26, 2016 · Replies 1 · Mar 28, 2016

Replies: 1

Views: 2K

Graduate Diffraction, Amplitude and Phase

Mar 27, 2016 · Replies 5 · Mar 28, 2016

Replies: 5

Views: 2K

Graduate How Does Specular Reflection Support the Particle Theory of Light?

Mar 17, 2016 · Replies 13 · Mar 27, 2016

Replies: 13

Views: 2K

Graduate Why Does Light Have No Mass If It's Made of Particles?

Mar 25, 2016 · Replies 25 · Mar 26, 2016

Replies: 25

Views: 3K

High School About light -- why when I look at a star I see rays around it?

Mar 24, 2016 · Replies 20 · Mar 26, 2016

Replies: 20

Views: 4K

Graduate Direction or angle independent image formation in lens

Mar 23, 2016 · Replies 1 · Mar 26, 2016

Replies: 1

Views: 1K

Undergrad Disparity about Near-Infared rays' penetration of the body

Mar 26, 2016 · Replies 1 · Mar 26, 2016

Replies: 1

Views: 1K

Undergrad Energy from cosmic microwave background

Mar 20, 2016 · Replies 6 · Mar 25, 2016

Replies: 6

Views: 2K

Graduate How would moving at the speed of light be perceived?

Mar 22, 2016 · Replies 1 · Mar 22, 2016

Replies: 1

Views: 1K

Graduate Physics of noise picked up by a radio when home lights are switched off

Mar 22, 2016 · Replies 2 · Mar 22, 2016

Replies: 2

Views: 2K

Undergrad Light: same frequency=different wavelength?

Mar 20, 2016 · Replies 5 · Mar 21, 2016

Replies: 5

Views: 2K

High School Alternative to bifocal and varifocal spectacle lenses?

Mar 19, 2016 · Replies 18 · Mar 20, 2016

Replies: 18

Views: 6K

High School Why Does Wave Interference Alter Intensity Distribution?

Mar 17, 2016 · Replies 2 · Mar 17, 2016

Replies: 2

Views: 2K

Undergrad Color of Light: Frequency vs Wavelength.

Mar 16, 2016 · Replies 5 · Mar 16, 2016

Replies: 5

Views: 3K

High School What is the Effect of Normal Lines on Glass Surfaces?

Mar 16, 2016 · Replies 4 · Mar 16, 2016

Replies: 4

Views: 1K

Undergrad Relationship between wavelength and refraction

Apr 26, 2012 · Replies 22 · Mar 15, 2016

Replies: 22

Views: 61K

Undergrad Optical instruments: Microscope and Telescope

Mar 13, 2016 · Replies 3 · Mar 14, 2016

Replies: 3

Views: 2K

Graduate Photon Reflection: Questions & Answers

Mar 13, 2016 · Replies 3 · Mar 14, 2016

Replies: 3

Views: 2K

High School Why plastic eyeglasses have less clarity than glass?

Mar 12, 2016 · Replies 3 · Mar 13, 2016

Replies: 3

Views: 2K

Undergrad A source's effect on diffraction pattern

Mar 13, 2016 · Replies 2 · Mar 13, 2016

Replies: 2

Views: 1K

Undergrad Determine emission spectrum of an LED

Feb 17, 2016 · Replies 50 · Mar 12, 2016

2

Replies: 50

Views: 10K

Graduate Solar Cells & Refractive Index

Mar 8, 2016 · Replies 16 · Mar 11, 2016

Replies: 16

Views: 6K

High School Mysterious Misty Rings: Unraveling the 2D View

Mar 10, 2016 · Replies 1 · Mar 10, 2016

Replies: 1

Views: 1K

Graduate Fermat's Principle, Snell's Law, and the Prism

Mar 6, 2016 · Replies 8 · Mar 9, 2016

Replies: 8

Views: 3K

Undergrad Can you find lens magnification from focal length?

Mar 9, 2016 · Replies 13 · Mar 9, 2016

Replies: 13

Views: 5K

Graduate Mechanism for extinction by scattering?

Mar 3, 2016 · Replies 9 · Mar 9, 2016

Replies: 9

Views: 2K

Undergrad Why waves of light don't hit each other?

Mar 5, 2016 · Replies 14 · Mar 8, 2016

Replies: 14

Views: 3K

Graduate Field frequency and angle of incidence in optical waveguides

Jan 27, 2016 · Replies 5 · Mar 8, 2016

Replies: 5

Views: 2K

Undergrad Understanding Photons: How They Emit Different Types of Energy

Mar 6, 2016 · Replies 6 · Mar 7, 2016

Replies: 6

Views: 2K

Undergrad Identifying the length of the object on the image

Mar 7, 2016 · Replies 2 · Mar 7, 2016

Replies: 2

Views: 1K

Graduate How to Calculate d(theta0)/d(theta1) in Snell's Law?

Mar 6, 2016 · Replies 2 · Mar 7, 2016

Replies: 2

Views: 2K

Undergrad Light what is it really ? past just another form of energy?

Mar 5, 2016 · Replies 1 · Mar 5, 2016

Replies: 1

Views: 1K

High School 10% energy loss glass special structure ?

Mar 5, 2016 · Replies 2 · Mar 5, 2016

Replies: 2

Views: 1K

Graduate How does light interact, and travel through Solid matter as

Mar 4, 2016 · Replies 1 · Mar 5, 2016

Replies: 1

Views: 2K

Undergrad Perceived Color of objects: in White light from a TV

Mar 2, 2016 · Replies 21 · Mar 4, 2016

Replies: 21

Views: 5K

Undergrad Binoculars and light amplification

Feb 21, 2016 · Replies 77 · Mar 4, 2016

3

Replies: 77

Views: 8K

High School Please enlighten me on Newton's 3rd law

Mar 3, 2016 · Replies 14 · Mar 4, 2016

Replies: 14

Views: 2K

High School Image formation by convex lens

Mar 2, 2016 · Replies 5 · Mar 3, 2016

Replies: 5

Views: 2K

Graduate Beam of Light Exerts a Force, Why?

Feb 9, 2016 · Replies 6 · Mar 3, 2016

Replies: 6

Views: 2K

Undergrad Thin Film Interference: Can You Have a Phase Difference>2pi

Mar 3, 2016 · Replies 4 · Mar 3, 2016

Replies: 4

Views: 1K

High School Laser Rangefinders: Function and Safety Explained

Feb 26, 2016 · Replies 22 · Mar 2, 2016

Replies: 22

Views: 3K

High School What Is the Difference Between Interference and Diffraction?

Mar 1, 2016 · Replies 6 · Mar 2, 2016

Replies: 6

Views: 2K

High School Mystery of Shadows in Light - Help Solve the Puzzle!

Feb 16, 2016 · Replies 7 · Mar 1, 2016

Replies: 7

Views: 2K

Undergrad Curious question about light/photons

Feb 17, 2016 · Replies 42 · Feb 28, 2016

2

Replies: 42

Views: 5K

Graduate Determining the light intensity in a double convex lens

Feb 22, 2016 · Replies 7 · Feb 28, 2016

Replies: 7

Views: 4K

Undergrad Convex Lens: Image Formation at Infinity & Parallel Rays

Feb 23, 2016 · Replies 13 · Feb 24, 2016

Replies: 13

Views: 4K

Graduate What happens after exceeding the speed of light?

Feb 23, 2016 · Replies 15 · Feb 23, 2016

Replies: 15

Views: 3K

Graduate Laser Beam Propagation: Calculating Power & Radius

Feb 8, 2016 · Replies 8 · Feb 23, 2016

Replies: 8

Views: 2K

Undergrad Optical physics and frame of reference....

Feb 23, 2016 · Replies 1 · Feb 23, 2016

Replies: 1

Views: 964

Graduate What Happens to Photons and Particles in Our Universe?

Feb 18, 2016 · Replies 1 · Feb 19, 2016

Replies: 1

Views: 2K

High School Can You Trust Your Sunglasses for Total UV Protection?

Feb 18, 2016 · Replies 14 · Feb 19, 2016

Replies: 14

Views: 2K

Undergrad How does optical density relate to mass density and refractive index?

Aug 24, 2013 · Replies 7 · Feb 19, 2016

Replies: 7

Views: 20K

Graduate Transmission of polarized light

Feb 18, 2016 · Replies 1 · Feb 18, 2016

Replies: 1

Views: 2K

Undergrad Why Do Narrower Slits Produce More Fringes in Young's Experiment?

Feb 13, 2016 · Replies 5 · Feb 17, 2016

Replies: 5

Views: 3K

Graduate Another question about dispersion (and wavenumber)

Feb 10, 2016 · Replies 9 · Feb 17, 2016

Replies: 9

Views: 2K

Undergrad How does space-time curvature affect light?

Feb 12, 2016 · Replies 5 · Feb 16, 2016

Replies: 5

Views: 3K

Undergrad Young's equation and longitudinal waves

Feb 15, 2016 · Replies 1 · Feb 15, 2016

Replies: 1

Views: 1K

High School Why light can't penetrate the prism with 45 degree angle

Feb 13, 2016 · Replies 13 · Feb 15, 2016

Replies: 13

Views: 4K

Graduate Thomson scattering and radiating power

Feb 10, 2016 · Replies 5 · Feb 14, 2016

Replies: 5

Views: 2K

Graduate Presumed mass content of photon as gravitational source

Feb 10, 2016 · Replies 3 · Feb 12, 2016

Replies: 3

Views: 2K

Undergrad Destructive Interference of two waves

Feb 12, 2016 · Replies 6 · Feb 12, 2016

Replies: 6

Views: 2K

Undergrad Faster than light travel in a vacuum chamber

Feb 12, 2016 · Replies 4 · Feb 12, 2016

Replies: 4

Views: 2K

High School Will I be able to see a monochromatic ray of light in space?

Feb 11, 2016 · Replies 9 · Feb 12, 2016

Replies: 9

Views: 1K

Graduate Single photon absorbed by single atom antenna

Feb 11, 2016 · Replies 2 · Feb 11, 2016

Replies: 2

Views: 1K

Graduate Can You See a Photon Beam Between Two Reflective Surfaces?

Feb 11, 2016 · Replies 1 · Feb 11, 2016

Replies: 1

Views: 1K

High School Light waves traveling through air

Feb 11, 2016 · Replies 2 · Feb 11, 2016

Replies: 2

Views: 1K

Undergrad Precision Measurements with a Michelson Interferometer

Feb 10, 2016 · Replies 4 · Feb 10, 2016

Replies: 4

Views: 1K

High School Do All Forms of Light Travel at the Same Speed?

Feb 9, 2016 · Replies 5 · Feb 10, 2016

Replies: 5

Views: 2K

Undergrad Speed of light of different wavelengths in medium

Sep 1, 2015 · Replies 8 · Feb 10, 2016

Replies: 8

Views: 9K

Graduate Overlaying optical field with Zernike aberration

Feb 10, 2016 · Replies 2 · Feb 10, 2016

Replies: 2

Views: 2K

High School How polarized test image cards work

Jan 27, 2016 · Replies 20 · Feb 10, 2016

Replies: 20

Views: 13K

Graduate Could we "catch" the light from prehistoric Earth and see dinosaurs?

Feb 8, 2016 · Replies 4 · Feb 8, 2016

Replies: 4

Views: 3K

Graduate Effect of a distant cold object in focus of concave mirro.

Feb 6, 2016 · Replies 14 · Feb 8, 2016

Replies: 14

Views: 2K

Graduate Is harnessing quarks and gluons for observation a possibility in the future?

Feb 5, 2016 · Replies 11 · Feb 5, 2016

Replies: 11

Views: 2K

Undergrad Diffraction Pattern: Why is Vertical Pattern Observed?

Apr 5, 2015 · Replies 15 · Feb 5, 2016

Replies: 15

Views: 7K

Undergrad "Unexpected" Image Formation with the help of our eyes

Feb 3, 2016 · Replies 14 · Feb 4, 2016

Replies: 14

Views: 2K

Undergrad Question about Huygen's principle

Feb 4, 2016 · Replies 2 · Feb 4, 2016

Replies: 2

Views: 1K

Graduate Revolving light source and creation of angular momentum

Feb 3, 2016 · Replies 12 · Feb 4, 2016

Replies: 12

Views: 2K

Graduate Experts in Optics: Advice needed in working with SLDs

Feb 3, 2016 · Replies 3 · Feb 3, 2016

Replies: 3

Views: 1K

High School Light Refraction: Causes & Angle Impact

Feb 1, 2016 · Replies 4 · Feb 2, 2016

Replies: 4

Views: 2K

Undergrad How Do Homopolar Motors Work Without Current Flow?

Jan 29, 2016 · Replies 16 · Feb 2, 2016

Replies: 16

Views: 4K

Graduate Understanding Non-Linear Optical Interference: The Role of Energy Equations"

Jan 31, 2016 · Replies 9 · Feb 1, 2016

Replies: 9

Views: 2K

Graduate Intensity-wavelength graph for X-ray

Feb 1, 2016 · Replies 1 · Feb 1, 2016

Replies: 1

Views: 4K

Graduate Is There a Commercially Available Filter for Collimation by Filtering?

Jan 31, 2016 · Replies 6 · Jan 31, 2016

Replies: 6

Views: 3K

Undergrad Explain the value of refractive index of water?

Jan 30, 2016 · Replies 2 · Jan 30, 2016

Replies: 2

Views: 2K

High School Why can't light be in black color?

Jan 25, 2016 · Replies 67 · Jan 30, 2016

3

Replies: 67

Views: 11K

Undergrad Question on laser reflection (pic included)

Jan 30, 2016 · Replies 6 · Jan 30, 2016

Replies: 6

Views: 1K

High School Objects in Optics: Image Formation Explained

Jan 26, 2016 · Replies 19 · Jan 30, 2016

Replies: 19

Views: 4K

Undergrad Why does 2slit interference depend on wavelength?

Jan 30, 2016 · Replies 3 · Jan 30, 2016

Replies: 3

Views: 2K

Undergrad What Determines the Size of an Image Formed at Infinity in Magnifiers?

Jan 27, 2016 · Replies 5 · Jan 29, 2016

Replies: 5

Views: 2K

Undergrad How to calculate phase difference for spherical waves?

Jan 28, 2016 · Replies 10 · Jan 29, 2016

Replies: 10

Views: 5K

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