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Graduate Does Fermat's Principle Apply in All Special Cases of Light Path Alteration?

Apr 17, 2013 · Replies 38 · Apr 23, 2013

2

Replies: 38

Views: 6K

Undergrad Possible for a screen to be both brighter and darker than another?

Apr 21, 2013 · Replies 9 · Apr 23, 2013

Replies: 9

Views: 2K

Undergrad Why does light bend when passing from one medium to another

Apr 22, 2013 · Replies 8 · Apr 23, 2013

Replies: 8

Views: 15K

Undergrad Chromatic image through a double circle aperture

Apr 22, 2013 · Replies 3 · Apr 22, 2013

Replies: 3

Views: 1K

High School Lightning strike blew out odd pieces in my house

Apr 22, 2013 · Replies 2 · Apr 22, 2013

Replies: 2

Views: 2K

Graduate Fraunhofer diffraction and convolution of two aperture functions

Apr 21, 2013 · Replies 1 · Apr 22, 2013

Replies: 1

Views: 4K

Undergrad Understanding Laser Blooming & Intensity

Dec 13, 2010 · Replies 7 · Apr 21, 2013

Replies: 7

Views: 7K

Undergrad Real vs Unreal Source Refraction Through Lense

Apr 10, 2013 · Replies 25 · Apr 20, 2013

Replies: 25

Views: 4K

Graduate Polarised (polarized) light; EM explanation.

Apr 18, 2013 · Replies 3 · Apr 19, 2013

Replies: 3

Views: 2K

High School Which side of an emergency blanket reflects light the best? Pros Pleas

Apr 18, 2013 · Replies 3 · Apr 18, 2013

Replies: 3

Views: 11K

High School What is the reason for the rainbows to be circular?

Apr 14, 2013 · Replies 8 · Apr 15, 2013

Replies: 8

Views: 5K

Undergrad Optical waveguide modes with different speed, what happens?

Apr 12, 2013 · Replies 2 · Apr 15, 2013

Replies: 2

Views: 2K

Undergrad Some questions about spectroscopy

Apr 15, 2013 · Replies 4 · Apr 15, 2013

Replies: 4

Views: 3K

Undergrad Difference between interference and diffraction?

Apr 15, 2013 · Replies 7 · Apr 15, 2013

Replies: 7

Views: 6K

Graduate Describing the Life of a Photon

Apr 12, 2013 · Replies 24 · Apr 14, 2013

Replies: 24

Views: 4K

Undergrad What is wavelength of light a measure of?

Apr 10, 2013 · Replies 4 · Apr 13, 2013

Replies: 4

Views: 3K

Undergrad Intensity and frequency of radio waves

Apr 13, 2013 · Replies 4 · Apr 13, 2013

Replies: 4

Views: 3K

Undergrad Light absorbance & color of materials

Apr 8, 2013 · Replies 9 · Apr 13, 2013

Replies: 9

Views: 3K

Undergrad Does Constructive Interference Double Sound Intensity at Source Point in Water?

Apr 12, 2013 · Replies 3 · Apr 12, 2013

Replies: 3

Views: 2K

Undergrad Temporal and Spatial Coherence

Apr 12, 2013 · Replies 1 · Apr 12, 2013

Replies: 1

Views: 2K

Graduate What will happen for single slit diffraction if?

Apr 1, 2013 · Replies 24 · Apr 12, 2013

Replies: 24

Views: 6K

Graduate Can a Photon Have a Perfectly Smooth Orbit?

Apr 11, 2013 · Replies 5 · Apr 12, 2013

Replies: 5

Views: 2K

Undergrad How determine aspheric lens beam angle?

Apr 11, 2013 · Replies 5 · Apr 12, 2013

Replies: 5

Views: 4K

Graduate Fourier transformation and light dispersion for spectra analysis

Apr 10, 2013 · Replies 4 · Apr 11, 2013

Replies: 4

Views: 2K

Graduate Optics: Concentrating light with a lens

Apr 11, 2013 · Replies 7 · Apr 11, 2013

Replies: 7

Views: 4K

Undergrad Wave interference and harmonic oscillation

Apr 10, 2013 · Replies 2 · Apr 10, 2013

Replies: 2

Views: 2K

Undergrad Will two orthogonally polarized light beams interfere?

Apr 9, 2013 · Replies 2 · Apr 9, 2013

Replies: 2

Views: 6K

Undergrad Wave Equation After Reflection

Apr 9, 2013 · Replies 1 · Apr 9, 2013

Replies: 1

Views: 2K

Graduate Reflection of sound depends on frecuency?

Apr 7, 2013 · Replies 1 · Apr 8, 2013

Replies: 1

Views: 2K

Graduate Does Slow Light Respond to Gravity

Mar 13, 2013 · Replies 15 · Apr 7, 2013

Replies: 15

Views: 3K

Undergrad How does a single fiber optic cable transmit millions of signals

Apr 5, 2013 · Replies 11 · Apr 7, 2013

Replies: 11

Views: 14K

High School Real image from concave mirror

Sep 29, 2011 · Replies 3 · Apr 6, 2013

Replies: 3

Views: 3K

Graduate Feynman's Lectures Refraction Angle question

Apr 6, 2013 · Replies 4 · Apr 6, 2013

Replies: 4

Views: 2K

High School How is the northern lights made?

Apr 5, 2013 · Replies 2 · Apr 5, 2013

Replies: 2

Views: 2K

Graduate Exploring Light's Polarization States: Longitudinal, Temporal, and Scalar

Apr 4, 2013 · Replies 2 · Apr 5, 2013

Replies: 2

Views: 1K

Graduate Can you change the wavelength of ligh without changing it's direction?

Apr 4, 2013 · Replies 5 · Apr 4, 2013

Replies: 5

Views: 3K

High School Refractive Index: Light Speed & Distance Perception

Apr 3, 2013 · Replies 14 · Apr 4, 2013

Replies: 14

Views: 4K

Undergrad IR lights reflecting off of windshield

Apr 1, 2013 · Replies 8 · Apr 2, 2013

Replies: 8

Views: 4K

Undergrad Huygens Principle: Light & Diffraction Explained

Apr 1, 2013 · Replies 7 · Apr 2, 2013

Replies: 7

Views: 3K

Graduate Replicate atmosphere of Earth, scaled down for experimenting

Apr 1, 2013 · Replies 9 · Apr 2, 2013

Replies: 9

Views: 3K

High School Why Does Light Bend Around Your Finger?

Apr 1, 2013 · Replies 2 · Apr 1, 2013

Replies: 2

Views: 3K

Graduate How Can a Lens Microstructure Alter LED Light Wavelengths?

Apr 1, 2013 · Replies 13 · Apr 1, 2013

Replies: 13

Views: 9K

Graduate How can diffraction be explanined using the concept of wavelength.

Mar 28, 2013 · Replies 18 · Apr 1, 2013

Replies: 18

Views: 4K

Undergrad Flipping the polarity of a compass needle. Why does this work?

Apr 1, 2013 · Replies 4 · Apr 1, 2013

Replies: 4

Views: 4K

Graduate Precious-Opal and/vs X-Ray Diffraction

Mar 29, 2013 · Replies 2 · Mar 31, 2013

Replies: 2

Views: 2K

Undergrad How to make screens visible in daylight

Mar 30, 2013 · Replies 4 · Mar 31, 2013

Replies: 4

Views: 6K

Undergrad Calculating Biconvex Glass Lens Radius of Curvature for a +35-cm Focal Length

Mar 30, 2013 · Replies 3 · Mar 30, 2013

Replies: 3

Views: 2K

Undergrad Diffraction Limit Sample for Microscope

Mar 29, 2013 · Replies 3 · Mar 29, 2013

Replies: 3

Views: 2K

Undergrad Young's double slit and coherent light

Mar 28, 2013 · Replies 4 · Mar 28, 2013

Replies: 4

Views: 2K

Undergrad Speed of light and snell's law

Mar 25, 2013 · Replies 15 · Mar 28, 2013

Replies: 15

Views: 4K

High School Question on the Law of Reflection

Mar 28, 2013 · Replies 3 · Mar 28, 2013

Replies: 3

Views: 3K

Undergrad How Does Light Reflect from Matter at the Subatomic Level?

Mar 22, 2013 · Replies 7 · Mar 28, 2013

Replies: 7

Views: 4K

Undergrad What are caustics as they apply to optics?

Mar 23, 2013 · Replies 8 · Mar 27, 2013

Replies: 8

Views: 2K

Graduate Amount of scattering calculated from scattering cross section

Mar 23, 2013 · Replies 4 · Mar 27, 2013

Replies: 4

Views: 2K

Graduate Can Monochromatic Photons Exist in Electromagnetic Waves?

Mar 26, 2013 · Replies 4 · Mar 27, 2013

Replies: 4

Views: 2K

Undergrad Fiber optics: using continous variation refractive indexes hold light?

Mar 26, 2013 · Replies 2 · Mar 27, 2013

Replies: 2

Views: 2K

Graduate Calculating EM field using only cross-section of past light cone?

Mar 14, 2013 · Replies 12 · Mar 27, 2013

Replies: 12

Views: 3K

Graduate Polarizations of plane waves propagating in anisotropic media

Mar 26, 2013 · Replies 12 · Mar 27, 2013

Replies: 12

Views: 3K

Graduate Help with optics, telecentric lens, and focusing at infinity

Mar 25, 2013 · Replies 8 · Mar 27, 2013

Replies: 8

Views: 4K

High School UV Light and UV glue And Sunlight

Mar 26, 2013 · Replies 2 · Mar 27, 2013

Replies: 2

Views: 4K

Graduate Calculating Reflective coefficient for glass slab

Mar 18, 2013 · Replies 2 · Mar 25, 2013

Replies: 2

Views: 3K

Undergrad Can a Laser Amplify Multiple Wavelengths Simultaneously?

Mar 11, 2013 · Replies 4 · Mar 24, 2013

Replies: 4

Views: 2K

Undergrad Destructive Interference and coherent light in anti-phase

Mar 24, 2013 · Replies 10 · Mar 24, 2013

Replies: 10

Views: 4K

Graduate OPTICS: How to solve a two lens system with the object in a medium?

Mar 22, 2013 · Replies 1 · Mar 24, 2013

Replies: 1

Views: 2K

High School How Do I Calculate the Focal Distance?

Mar 22, 2013 · Replies 1 · Mar 22, 2013

Replies: 1

Views: 2K

Undergrad Why can't we see objects smaller than wavelength of visible light?

Mar 22, 2013 · Replies 5 · Mar 22, 2013

Replies: 5

Views: 21K

Graduate Linear Polarization Experiment Question

Mar 21, 2013 · Replies 2 · Mar 22, 2013

Replies: 2

Views: 2K

Undergrad Why unequal fringe width in Michelson interference pattern?

Feb 19, 2013 · Replies 5 · Mar 22, 2013

Replies: 5

Views: 2K

Undergrad Spectral lines and absorption lines

Mar 18, 2013 · Replies 4 · Mar 22, 2013

Replies: 4

Views: 2K

Graduate Sound Wave Scattering: Interface Total Potential?

Mar 21, 2013 · Replies 2 · Mar 22, 2013

Replies: 2

Views: 2K

Graduate What determines if a photon is absorbed?

Mar 21, 2013 · Replies 3 · Mar 21, 2013

Replies: 3

Views: 2K

Graduate Fields of a very short laser pulse, pulse a fraction of wavelength.

Dec 30, 2012 · Replies 9 · Mar 21, 2013

Replies: 9

Views: 5K

Graduate Does this mean the speed of x ray faster than light in vaccum

Mar 6, 2013 · Replies 9 · Mar 21, 2013

Replies: 9

Views: 12K

High School Why Do Fingerprints Appear on Glass When It's Filled with Water?

Mar 18, 2013 · Replies 3 · Mar 21, 2013

Replies: 3

Views: 3K

Undergrad Turning on a flashlight at 98 of c

Mar 21, 2013 · Replies 4 · Mar 21, 2013

Replies: 4

Views: 2K

Undergrad Modelling flight path of a golf ball

Mar 20, 2013 · Replies 1 · Mar 20, 2013

Replies: 1

Views: 2K

Graduate Can a Single Photon Be Directly Observed?

Mar 19, 2013 · Replies 19 · Mar 20, 2013

Replies: 19

Views: 5K

High School What affects the light intensity and light output geometry?

Mar 19, 2013 · Replies 1 · Mar 19, 2013

Replies: 1

Views: 5K

Graduate Optical tweezers, QPD back focal plane interferometry vs imaging

Mar 18, 2013 · Replies 3 · Mar 19, 2013

Replies: 3

Views: 3K

High School LED - Measuring light intensity

Mar 16, 2013 · Replies 10 · Mar 19, 2013

Replies: 10

Views: 8K

Graduate Powered sphere completely surrounded by perfect mirrors

Mar 17, 2013 · Replies 5 · Mar 17, 2013

Replies: 5

Views: 2K

Graduate More on super-reflective surfaces.

Mar 16, 2013 · Replies 3 · Mar 16, 2013

Replies: 3

Views: 3K

Undergrad Assigning Polarities and using them in KVL equation, circuits

Mar 16, 2013 · Replies 3 · Mar 16, 2013

Replies: 3

Views: 3K

High School What Is Oscillating at Right Angles to Wave Propagation in AS Level Physics?

Mar 9, 2013 · Replies 22 · Mar 15, 2013

Replies: 22

Views: 4K

Undergrad Are Metamaterials the Key to Developing Cloaking Devices?

Mar 12, 2013 · Replies 2 · Mar 15, 2013

Replies: 2

Views: 2K

Undergrad Calculating Illuminance of a panel light

Mar 13, 2013 · Replies 1 · Mar 13, 2013

Replies: 1

Views: 2K

Undergrad Dichroic mirror spectral range?

Mar 12, 2013 · Replies 3 · Mar 13, 2013

Replies: 3

Views: 2K

High School Understanding m^2 / s^2 (Speed of Light help)

Mar 11, 2013 · Replies 3 · Mar 12, 2013

Replies: 3

Views: 4K

Graduate How to Define Lattice Properties for Octagonal PCF in OptiFDTD 8?

Sep 21, 2012 · Replies 10 · Mar 12, 2013

Replies: 10

Views: 4K

Undergrad UV and IR Light: Common Misconceptions and Questions

Mar 7, 2013 · Replies 8 · Mar 11, 2013

Replies: 8

Views: 4K

Undergrad The reflection of resonance tube

Mar 5, 2013 · Replies 27 · Mar 11, 2013

Replies: 27

Views: 5K

Undergrad Is there a special term for refractive indices when 1 is subtracted?

Mar 10, 2013 · Replies 1 · Mar 11, 2013

Replies: 1

Views: 1K

Undergrad Experiments Involving Lasers and Optics

Mar 9, 2013 · Replies 7 · Mar 10, 2013

Replies: 7

Views: 4K

Undergrad Coloured light on complementary surface

Feb 23, 2013 · Replies 4 · Mar 9, 2013

Replies: 4

Views: 3K

Graduate Can we obtain a permanently polarized ice?

Mar 8, 2013 · Replies 2 · Mar 8, 2013

Replies: 2

Views: 2K

Graduate Passive Adiabatic Effect: Cold sky reflection on IR imagery.

Mar 7, 2013 · Replies 2 · Mar 8, 2013

Replies: 2

Views: 3K

Graduate How Does the Refractive Index Influence Light Interaction with Metals?

Mar 8, 2013 · Replies 1 · Mar 8, 2013

Replies: 1

Views: 4K

High School Understanding ray diagrams for concave lenses

Mar 7, 2013 · Replies 3 · Mar 8, 2013

Replies: 3

Views: 2K

Undergrad Resolution and Rayleigh's Criteria

Mar 6, 2013 · Replies 2 · Mar 7, 2013

Replies: 2

Views: 4K

Graduate Can interferometers be built with multiple light sources?

Mar 7, 2013 · Replies 2 · Mar 7, 2013

Replies: 2

Views: 1K

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