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Graduate Ref index/wavelength data for GaSb & InSb at 2-20um

Mar 23, 2015 · Replies 1 · Mar 24, 2015

Replies: 1

Views: 1K

Undergrad Photons -- can they have mass and travel at c?

Mar 21, 2015 · Replies 19 · Mar 23, 2015

Replies: 19

Views: 3K

Undergrad Does Light Always Travel at the Speed of c in Different Mediums?

Mar 23, 2015 · Replies 4 · Mar 23, 2015

Replies: 4

Views: 2K

High School How to photograph a diffraction pattern?

Mar 8, 2015 · Replies 28 · Mar 22, 2015

Replies: 28

Views: 6K

Undergrad Components of vectors (polar coordinates)

Mar 19, 2015 · Replies 2 · Mar 20, 2015

Replies: 2

Views: 2K

Graduate Half Wave-Plate: measurement contradicting theory

Mar 13, 2015 · Replies 10 · Mar 19, 2015

Replies: 10

Views: 4K

Undergrad Focal length of 2 lenses to reduce laser beam diameter

Mar 18, 2015 · Replies 2 · Mar 18, 2015

Replies: 2

Views: 6K

Undergrad Light Bulb Illumination: Understanding the Role of Current and Energy Transfer

Mar 17, 2015 · Replies 8 · Mar 17, 2015

Replies: 8

Views: 3K

Undergrad Polarization and refractive index

Mar 12, 2015 · Replies 22 · Mar 17, 2015

Replies: 22

Views: 9K

Graduate Bending the Rules (Gamma ray lenses)

Mar 16, 2015 · Replies 4 · Mar 17, 2015

Replies: 4

Views: 3K

Graduate Vector components in polar coordinates

Mar 14, 2015 · Replies 14 · Mar 16, 2015

Replies: 14

Views: 2K

Graduate I am trying to find materials to make a pulse laser for lab

Mar 16, 2015 · Replies 3 · Mar 16, 2015

Replies: 3

Views: 2K

Undergrad Understanding Angular Magnification in Simple Magnifiers and Telescopes

Mar 15, 2015 · Replies 2 · Mar 16, 2015

Replies: 2

Views: 2K

Undergrad Random question -- if a laser beam did not spread out

Mar 12, 2015 · Replies 18 · Mar 16, 2015

Replies: 18

Views: 2K

Graduate Relativity and Photon Emission

Mar 15, 2015 · Replies 6 · Mar 16, 2015

Replies: 6

Views: 2K

Undergrad Interference-based Rotation Sensing: Utilizing Split Beams and Phase Changes

Mar 8, 2015 · Replies 4 · Mar 16, 2015

Replies: 4

Views: 1K

Graduate Newton's optical theory of gravity

Mar 13, 2015 · Replies 8 · Mar 15, 2015

Replies: 8

Views: 2K

Graduate Electrically Controlled Auto Darkening Lenses: Mirrored or Transparent?

Mar 14, 2015 · Replies 1 · Mar 15, 2015

Replies: 1

Views: 2K

High School Is a Rainbow Close to the Ground Possible? A Camera Optics Mystery

Mar 12, 2015 · Replies 16 · Mar 14, 2015

Replies: 16

Views: 4K

Graduate What chem reactn gives the highest rate of photons emssn/t ?

Mar 13, 2015 · Replies 1 · Mar 13, 2015

Replies: 1

Views: 1K

Graduate Photograph of (optical) caustics

Mar 12, 2015 · Replies 1 · Mar 12, 2015

Replies: 1

Views: 1K

High School Refraction of Light: Is There No Refraction?

Mar 12, 2015 · Replies 2 · Mar 12, 2015

Replies: 2

Views: 2K

Graduate Polar coordinates, sign ambiguity

Mar 11, 2015 · Replies 6 · Mar 11, 2015

Replies: 6

Views: 2K

Graduate Help on the proof related to the vectorial wave equation

Mar 8, 2015 · Replies 3 · Mar 11, 2015

Replies: 3

Views: 890

Undergrad Can a real image be formed by a virtual image?

Mar 7, 2015 · Replies 14 · Mar 10, 2015

Replies: 14

Views: 4K

Undergrad Using Red Light to Reduce Effect of Ambient Light

Mar 9, 2015 · Replies 2 · Mar 10, 2015

Replies: 2

Views: 2K

Graduate Phase of reflected and transmitted waves

Mar 8, 2015 · Replies 2 · Mar 9, 2015

Replies: 2

Views: 2K

Graduate Creating a Photon-Free Space: Is it Possible?

Mar 9, 2015 · Replies 1 · Mar 9, 2015

Replies: 1

Views: 1K

Undergrad Physics of Sight: How Does it Work?

Mar 8, 2015 · Replies 5 · Mar 8, 2015

Replies: 5

Views: 3K

Graduate Could a photon activate multiple photomultipliers at once?

Mar 7, 2015 · Replies 7 · Mar 8, 2015

Replies: 7

Views: 1K

Graduate Difference in proof between TE and TM modes

Mar 8, 2015 · Replies 2 · Mar 8, 2015

Replies: 2

Views: 3K

Undergrad Please teach me a little about nodal and anti nodal lines

Mar 7, 2015 · Replies 1 · Mar 8, 2015

Replies: 1

Views: 2K

Undergrad Young Double slit experiment condition

Mar 7, 2015 · Replies 13 · Mar 7, 2015

Replies: 13

Views: 2K

Undergrad What particle emits the most radio waves?

Feb 5, 2015 · Replies 7 · Mar 7, 2015

Replies: 7

Views: 2K

High School Why is photon massless particle?

Mar 4, 2015 · Replies 3 · Mar 6, 2015

Replies: 3

Views: 2K

Undergrad What is the relationship between intensity and amplitude?

Mar 5, 2015 · Replies 4 · Mar 6, 2015

Replies: 4

Views: 1K

Graduate Photonic vacuum and atomic stability

Mar 5, 2015 · Replies 5 · Mar 6, 2015

Replies: 5

Views: 2K

Undergrad The Law of Reflection and Lasers

Mar 4, 2015 · Replies 7 · Mar 5, 2015

Replies: 7

Views: 3K

Graduate Build a LCD Flicker Meter Using Photodiode and Current Amp

Mar 4, 2015 · Replies 1 · Mar 4, 2015

Replies: 1

Views: 2K

Graduate Fourier shifting theorem in diffraction

Mar 3, 2015 · Replies 1 · Mar 3, 2015

Replies: 1

Views: 1K

Graduate Does reflection change the frequency of light?

Mar 2, 2015 · Replies 14 · Mar 3, 2015

Replies: 14

Views: 8K

Undergrad Why objects reflect light instead of absorbing or transmitti

Mar 2, 2015 · Replies 1 · Mar 3, 2015

Replies: 1

Views: 1K

Graduate What are the limits of λ and E parameters in the Kerr Optical Effect?

Sep 6, 2013 · Replies 4 · Mar 2, 2015

Replies: 4

Views: 3K

Graduate Curiosity for existence of Anti- photons?

Mar 2, 2015 · Replies 6 · Mar 2, 2015

Replies: 6

Views: 2K

Graduate How does split step Fourier method help four wave mixing?

Feb 27, 2015 · Replies 5 · Mar 2, 2015

Replies: 5

Views: 3K

High School Do we have a complete knowledge of the spectrum of light?

Feb 23, 2015 · Replies 17 · Mar 2, 2015

Replies: 17

Views: 4K

High School What is the correct way to draw this internal reflection

Mar 1, 2015 · Replies 7 · Mar 1, 2015

Replies: 7

Views: 1K

High School The Doppler Effect on a still object?

Feb 27, 2015 · Replies 15 · Mar 1, 2015

Replies: 15

Views: 2K

High School Will UV Filter Stop Bullseye Glass From Starting Fires?

Mar 1, 2015 · Replies 4 · Mar 1, 2015

Replies: 4

Views: 2K

Graduate Complex Wave Orientation Correction

Feb 28, 2015 · Replies 1 · Mar 1, 2015

Replies: 1

Views: 2K

High School How does the dark and bright fringes form ?

Feb 27, 2015 · Replies 2 · Feb 27, 2015

Replies: 2

Views: 4K

Undergrad Why Is Binary Modulation Preferred in Visible Light Communication?

Dec 11, 2014 · Replies 9 · Feb 27, 2015

Replies: 9

Views: 2K

Graduate Solving a Laser Beam Deflection Problem Using Equations

Feb 26, 2015 · Replies 1 · Feb 27, 2015

Replies: 1

Views: 1K

Undergrad Is it possible to create a specific wavelength

Feb 16, 2015 · Replies 10 · Feb 26, 2015

Replies: 10

Views: 4K

Graduate Polarization of Light: Causes & Absorption Mechanism

Feb 25, 2015 · Replies 4 · Feb 26, 2015

Replies: 4

Views: 2K

Graduate Kinematics in polar coordinates

Feb 23, 2015 · Replies 8 · Feb 25, 2015

Replies: 8

Views: 2K

Graduate Uncovering the Mysteries of Photons: Energy, Illumination, and Mass - FAQs

Feb 24, 2015 · Replies 12 · Feb 24, 2015

Replies: 12

Views: 3K

Graduate How to calculate mode overlap with I(x,y) rather than E(x,y)

Feb 23, 2015 · Replies 1 · Feb 24, 2015

Replies: 1

Views: 2K

Undergrad Material opaque to IR but transparent to visible light

Feb 23, 2015 · Replies 7 · Feb 24, 2015

Replies: 7

Views: 6K

Graduate Why Does Reflection Phase Shift Not Always Apply to Both Polarizations?

Feb 23, 2015 · Replies 4 · Feb 23, 2015

Replies: 4

Views: 2K

High School What does reflectivity Contrast mean?

Feb 23, 2015 · Replies 1 · Feb 23, 2015

Replies: 1

Views: 2K

Graduate Violation in diffraction? Lagrange (Optical) invariant

Feb 22, 2015 · Replies 7 · Feb 23, 2015

Replies: 7

Views: 3K

Undergrad Lens Question for Design of an Infrared Spotlight

Feb 23, 2015 · Replies 6 · Feb 23, 2015

Replies: 6

Views: 2K

Undergrad Radiant intensity, LED specifications

Feb 3, 2015 · Replies 20 · Feb 23, 2015

Replies: 20

Views: 13K

High School Covering 1 slit in Young's double slit experiment

Feb 23, 2015 · Replies 1 · Feb 23, 2015

Replies: 1

Views: 1K

Undergrad Simplest possible light sensor relative calibration

Feb 22, 2015 · Replies 7 · Feb 22, 2015

Replies: 7

Views: 1K

Undergrad Worst frequency for EM interference?

Feb 20, 2015 · Replies 3 · Feb 20, 2015

Replies: 3

Views: 2K

Undergrad Understanding EM Spectrum: Emitting vs. Reflecting | IR Camera Examples

Feb 20, 2015 · Replies 3 · Feb 20, 2015

Replies: 3

Views: 2K

Undergrad Two slits diffraction vs interference

Mar 4, 2013 · Replies 13 · Feb 20, 2015

Replies: 13

Views: 5K

High School Why do things far away seem smaller?

Feb 9, 2015 · Replies 21 · Feb 19, 2015

Replies: 21

Views: 13K

Graduate Why does Newtonian dynamics break down at the speed of light

Feb 14, 2015 · Replies 40 · Feb 19, 2015

2

Replies: 40

Views: 10K

Undergrad Bragg law vs interference equaiton

Feb 18, 2015 · Replies 5 · Feb 19, 2015

Replies: 5

Views: 2K

Graduate How much energy does light transfer to an object?

Feb 14, 2015 · Replies 12 · Feb 18, 2015

Replies: 12

Views: 3K

Undergrad Optics: Working out distance of an object from single digital camera using the captured image

Feb 17, 2015 · Replies 3 · Feb 17, 2015

Replies: 3

Views: 2K

Undergrad Huygen Wavefront: Drawing a Tangent to Wavelets

Feb 17, 2015 · Replies 6 · Feb 17, 2015

Replies: 6

Views: 2K

Undergrad Methods for Modeling 2d Rocket Flight

Feb 9, 2015 · Replies 5 · Feb 16, 2015

Replies: 5

Views: 2K

Undergrad Optimizing PV Solar Panel Efficiency with Wavelength Absorption and Reflection

Feb 16, 2015 · Replies 2 · Feb 16, 2015

Replies: 2

Views: 2K

High School Constructive interference and destructive interference

Feb 16, 2015 · Replies 2 · Feb 16, 2015

Replies: 2

Views: 2K

High School Why do objects have different colors?

Feb 9, 2015 · Replies 15 · Feb 16, 2015

Replies: 15

Views: 4K

Graduate Refractive Index change with Wavelength & Carrier Concentration

Feb 15, 2015 · Replies 14 · Feb 16, 2015

Replies: 14

Views: 6K

International Year of Light: Article Collection

Feb 13, 2015 · Replies 3 · Feb 16, 2015

Replies: 3

Views: 1K

Undergrad What Are Photons? Effects of Electric Charges

Feb 3, 2015 · Replies 46 · Feb 16, 2015

2

Replies: 46

Views: 7K

Undergrad Trouble understanding Fermat's principle of least time

Feb 14, 2015 · Replies 7 · Feb 15, 2015

Replies: 7

Views: 2K

High School About "Light", need better understanding of it.

Feb 14, 2015 · Replies 5 · Feb 15, 2015

Replies: 5

Views: 1K

Graduate How Do You Calculate the Electric Potential of a Polarized Half-Cylinder?

Feb 14, 2015 · Replies 1 · Feb 14, 2015

Replies: 1

Views: 1K

High School Light -- how light particles can penetrate through glass?

Feb 11, 2015 · Replies 4 · Feb 14, 2015

Replies: 4

Views: 2K

Undergrad Understanding Bragg's Law and Reflection: A Beginner's Guide

Feb 9, 2015 · Replies 4 · Feb 13, 2015

Replies: 4

Views: 4K

Undergrad Resonance in String: Understanding Wave Interference According to Book

Feb 12, 2015 · Replies 3 · Feb 13, 2015

Replies: 3

Views: 2K

Graduate Interference viewed in the focal plane

Feb 8, 2015 · Replies 12 · Feb 12, 2015

Replies: 12

Views: 2K

Graduate Can I Calculate Satellite Dish Curvature for a Specific Radio Wavelength?

Feb 12, 2015 · Replies 3 · Feb 12, 2015

Replies: 3

Views: 2K

Undergrad Index of Refraction Through a Cylindrical Tube

Feb 12, 2015 · Replies 4 · Feb 12, 2015

Replies: 4

Views: 2K

Graduate Linear loss coefficient in Si waveguide

Feb 5, 2015 · Replies 2 · Feb 10, 2015

Replies: 2

Views: 1K

Graduate X-ray Diffraction: Crystal Structure vs. Electric Dipole

Feb 10, 2015 · Replies 1 · Feb 10, 2015

Replies: 1

Views: 2K

Graduate TEM TE and TM Modes for Waveguides ?

Feb 9, 2015 · Replies 1 · Feb 9, 2015

Replies: 1

Views: 2K

Graduate Does a diffraction grating with a shape form fourier image

Feb 6, 2015 · Replies 7 · Feb 9, 2015

Replies: 7

Views: 2K

Undergrad Circular interference from the equation of a hyperbola

Jan 24, 2015 · Replies 7 · Feb 7, 2015

Replies: 7

Views: 4K

Undergrad Fresnel's Biprism Experiment: What Are Virtual Sources?

Feb 6, 2015 · Replies 41 · Feb 7, 2015

2

Replies: 41

Views: 14K

Graduate Optics -- caustic curve equation

Feb 5, 2015 · Replies 1 · Feb 5, 2015

Replies: 1

Views: 3K

Undergrad Angle of incidence and reflection

Feb 3, 2015 · Replies 5 · Feb 5, 2015

Replies: 5

Views: 2K

Undergrad Testing Low Pass Optical Filter

Feb 5, 2015 · Replies 2 · Feb 5, 2015

Replies: 2

Views: 1K

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