Menu

Navigation

More options

Style variation

Contact us

Optics Forum

Filters

Graduate Understanding Polarizing Angle: Explained by an Engineering Student

Nov 30, 2008 · Replies 1 · Aug 6, 2019

Replies: 1

Views: 3K

Graduate Polarization Problem: Estimating Voltage Needed to Ionize Hydrogen Atom

Nov 3, 2004 · Replies 3 · Aug 4, 2019

Replies: 3

Views: 4K

High School Do car windows and windshields block ultraviolet light?

Jul 17, 2018 · Replies 16 · Aug 2, 2019

Replies: 16

Views: 15K

Undergrad What Color Will NIR Laser Goggles Be?

Jul 25, 2019 · Replies 8 · Jul 28, 2019

Replies: 8

Views: 2K

High School Light Speed: Distance & Time Explained

Sep 2, 2018 · Replies 4 · Jul 27, 2019

Replies: 4

Views: 10K

Graduate Advantages of Polar Coordinate System & Rotating Unit Vectors

Jul 26, 2019 · Replies 7 · Jul 26, 2019

Replies: 7

Views: 3K

Graduate Reflection of a photon by an atom

Jul 20, 2019 · Replies 15 · Jul 26, 2019

Replies: 15

Views: 3K

Undergrad Huygen’s Principle in 2 Dimensions

Jul 23, 2019 · Replies 1 · Jul 25, 2019

Replies: 1

Views: 2K

Undergrad Equation to find the intensity of diffraction patterns: explanations please

Jul 23, 2019 · Replies 5 · Jul 24, 2019

Replies: 5

Views: 2K

Undergrad Optic Fiber Project Ideas for Amateur Physics Student

Jul 20, 2019 · Replies 2 · Jul 21, 2019

Replies: 2

Views: 9K

High School A strange phenomenon occuring when viewing the moon through window screens

Jul 18, 2019 · Replies 3 · Jul 19, 2019

Replies: 3

Views: 3K

High School Is the Speed of Light Really 3000 km/s?

Jul 19, 2019 · Replies 4 · Jul 19, 2019

Replies: 4

Views: 9K

Graduate Is Snell's law incompatible with interface conditions? What went wrong?

Jul 3, 2019 · Replies 8 · Jul 16, 2019

Replies: 8

Views: 2K

High School Why does it take thousands of years for light to reach the surface of the Sun?

Jun 29, 2019 · Replies 12 · Jul 15, 2019

Replies: 12

Views: 2K

High School Strange Optical Effect: See CD Fully Visible & Ruler Bulging

Jul 13, 2019 · Replies 5 · Jul 14, 2019

Replies: 5

Views: 2K

Graduate Are Photons Vibrations or a Separate Entity in Light Transmission?

Jul 8, 2019 · Replies 63 · Jul 12, 2019

3

Replies: 63

Views: 6K

Undergrad Is a particle beam or laser beam conductive?

Jul 10, 2019 · Replies 4 · Jul 11, 2019

Replies: 4

Views: 2K

Graduate Permeability of copper in the microwave frequency range

Jul 9, 2019 · Replies 3 · Jul 10, 2019

Replies: 3

Views: 1K

Undergrad Why does this inverse square calculation fail to predict actual data?

Jul 8, 2019 · Replies 2 · Jul 8, 2019

Replies: 2

Views: 956

Graduate Curl of Polarization in a bar electret

Jul 5, 2019 · Replies 3 · Jul 5, 2019

Replies: 3

Views: 11K

Undergrad Air Wedge Experiment: Conditions for Bigger Scale?

Jul 5, 2019 · Replies 1 · Jul 5, 2019

Replies: 1

Views: 1K

High School What can be used to change the direction of the laser beam?

Jul 3, 2019 · Replies 3 · Jul 3, 2019

Replies: 3

Views: 10K

Ball Lightning Discussions/Anecdotes?

Jun 5, 2019 · Replies 31 · Jul 1, 2019

2

Replies: 31

Views: 17K

Undergrad Glasses and problems with chromatic aberration

Jun 15, 2019 · Replies 12 · Jun 30, 2019

Replies: 12

Views: 3K

Undergrad Detectable wavelengths of light at the surface of the Earth

Jun 26, 2019 · Replies 6 · Jun 27, 2019

Replies: 6

Views: 10K

Graduate Understanding Waveform & Autocorrelation in Pulse Lasers

Jun 25, 2019 · Replies 2 · Jun 26, 2019

Replies: 2

Views: 10K

High School Noisy Wave Pattern Between Round Objects Behind a Light

Jun 26, 2019 · Replies 1 · Jun 26, 2019

Replies: 1

Views: 9K

Undergrad How does a massless photon impart force?

Jun 19, 2019 · Replies 2 · Jun 21, 2019

Replies: 2

Views: 10K

Undergrad Interference Pattern from two coherent light sources

Jun 18, 2019 · Replies 1 · Jun 18, 2019

Replies: 1

Views: 2K

Graduate Speed of the outside of a wheel faster than the speed of light

Jun 10, 2019 · Replies 12 · Jun 10, 2019

Replies: 12

Views: 2K

Graduate Spacecraft path with polar coordinates

Apr 4, 2013 · Replies 1 · Jun 10, 2019

Replies: 1

Views: 3K

Graduate Modes and Q-factor(s) of a random laser

Jun 8, 2019 · Replies 2 · Jun 9, 2019

Replies: 2

Views: 10K

Undergrad Create a focused beam angle of LED light using reflection

Jun 7, 2019 · Replies 10 · Jun 9, 2019

Replies: 10

Views: 5K

Graduate Curious optical effect related to light passing through a mesh

May 4, 2019 · Replies 19 · Jun 4, 2019

Replies: 19

Views: 20K

Graduate Pinhole Diffraction of a Spherical Wave

Jun 3, 2019 · Replies 6 · Jun 4, 2019

Replies: 6

Views: 3K

Graduate The attractive force of photons on other photons & matter

May 2, 2019 · Replies 5 · Jun 1, 2019

Replies: 5

Views: 17K

Graduate Why light slows in transparent media

May 28, 2019 · Replies 4 · May 30, 2019

Replies: 4

Views: 10K

Undergrad Beam-splitter transformation matrix

May 25, 2019 · Replies 3 · May 26, 2019

Replies: 3

Views: 3K

Undergrad Number of interference fringes based on n open slits

May 25, 2019 · Replies 1 · May 25, 2019

Replies: 1

Views: 1K

Undergrad I Want to Remove a KTP Crystal's Coating

May 23, 2019 · Replies 7 · May 25, 2019

Replies: 7

Views: 9K

Undergrad Interferometry (testing of optics)

May 21, 2019 · Replies 5 · May 24, 2019

Replies: 5

Views: 2K

Graduate Laser rangefinder by phase-shift

May 20, 2019 · Replies 10 · May 22, 2019

Replies: 10

Views: 5K

Undergrad How does a laser rangefinder measure distances up to 20 km?

May 18, 2019 · Replies 3 · May 20, 2019

Replies: 3

Views: 2K

Graduate New Optics Toy: A 'Varicolor' filter

May 14, 2019 · Replies 1 · May 17, 2019

Replies: 1

Views: 10K

Undergrad How does a laser rangefinder work?

May 6, 2019 · Replies 8 · May 14, 2019

Replies: 8

Views: 3K

Undergrad What do these submaxima represent - Interference Pattern

May 13, 2019 · Replies 30 · May 14, 2019

2

Replies: 30

Views: 3K

Undergrad Help understanding the formula for the total phase shift of a waveplate stack

May 13, 2019 · Replies 1 · May 13, 2019

Replies: 1

Views: 9K

Graduate Focusing of a 2D Parabolic Mirror

May 9, 2019 · Replies 3 · May 12, 2019

Replies: 3

Views: 2K

Graduate Effects of Lens Element Aberrations on a Fully Corrected Lens Image

May 4, 2019 · Replies 10 · May 8, 2019

Replies: 10

Views: 2K

High School Beamsplitter in a Michelson interferometer

May 5, 2019 · Replies 9 · May 6, 2019

Replies: 9

Views: 2K

Undergrad Constructive and destructive interference

May 3, 2019 · Replies 3 · May 5, 2019

Replies: 3

Views: 13K

Undergrad Will Headlights Work If My Car Travels Near the Speed of Light?

May 5, 2019 · Replies 1 · May 5, 2019

Replies: 1

Views: 11K

Undergrad Several questions about the speed of light

Apr 28, 2019 · Replies 12 · May 5, 2019

Replies: 12

Views: 12K

Graduate Difference between O and E rays to S and P polarizations

Apr 25, 2019 · Replies 1 · May 3, 2019

Replies: 1

Views: 2K

Undergrad Which Is Better for Visualizing Jet Flow: Schlieren or BOS Photography?

May 2, 2019 · Replies 3 · May 3, 2019

Replies: 3

Views: 10K

Graduate What Causes Reflection and Transparency in Solid State Physics?

Oct 4, 2009 · Replies 1 · May 2, 2019

Replies: 1

Views: 16K

Graduate If photons can't escape a black hole, how come gravitons can?

Apr 10, 2019 · Replies 18 · May 2, 2019

Replies: 18

Views: 13K

High School Double Slit Experiment with a Medium in front of the slits

Apr 29, 2019 · Replies 2 · Apr 29, 2019

Replies: 2

Views: 1K

High School What Would Happen if the Sun Suddenly Disappeared?

Apr 29, 2019 · Replies 14 · Apr 29, 2019

Replies: 14

Views: 9K

Undergrad Human eye and its focal length range....

Apr 24, 2019 · Replies 8 · Apr 26, 2019

Replies: 8

Views: 2K

Undergrad Is it possible to use a DSLR as a cost effective spectrometer?

Apr 25, 2019 · Replies 9 · Apr 26, 2019

Replies: 9

Views: 9K

High School What is a 1-dimensional mirror?

Apr 19, 2019 · Replies 1 · Apr 19, 2019

Replies: 1

Views: 4K

Undergrad If I had a cubic metre of solid osmium, a perfect cube....

Apr 18, 2019 · Replies 4 · Apr 19, 2019

Replies: 4

Views: 5K

Graduate Can light always be treated as a physical object?

Apr 15, 2019 · Replies 15 · Apr 18, 2019

Replies: 15

Views: 6K

Graduate Measuring Wavelength of Photons: Precision & Variation

Apr 6, 2019 · Replies 35 · Apr 17, 2019

2

Replies: 35

Views: 9K

Graduate Speed of Light when not in a vacuum?

Apr 16, 2019 · Replies 5 · Apr 16, 2019

Replies: 5

Views: 6K

Graduate What makes a light source "brighter"?

Apr 15, 2019 · Replies 7 · Apr 15, 2019

Replies: 7

Views: 5K

Undergrad Understanding Counts in Spectrometer

Apr 7, 2012 · Replies 1 · Apr 15, 2019

Replies: 1

Views: 4K

Undergrad Interference & Diffraction in Double Slit Experiment

Apr 6, 2019 · Replies 7 · Apr 15, 2019

Replies: 7

Views: 7K

Graduate Intensities from the Michelson Beamsplitter

Nov 4, 2010 · Replies 1 · Apr 14, 2019

Replies: 1

Views: 2K

Graduate Photon wavelength probability distribution for blackbody

Apr 6, 2013 · Replies 1 · Apr 14, 2019

Replies: 1

Views: 2K

Graduate Phase Shifts and Interference in Reflection: Understanding the Differences

Jun 17, 2009 · Replies 1 · Apr 14, 2019

Replies: 1

Views: 3K

Graduate Diffraction through a sub-wavelength aperture

Oct 17, 2004 · Replies 1 · Apr 14, 2019

Replies: 1

Views: 4K

Graduate Verify definition of circular polarization in Balanis.

Jan 15, 2013 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 4K

Undergrad Can a Red Plastic Cover Improve an IR Sensor Performance?

Nov 9, 2011 · Replies 1 · Apr 13, 2019

Replies: 1

Views: 2K

High School How is a Photon being created?

Apr 11, 2019 · Replies 3 · Apr 13, 2019

Replies: 3

Views: 5K

Graduate Controlling light diffraction angle with a holographic "lens"

Apr 9, 2019 · Replies 15 · Apr 11, 2019

Replies: 15

Views: 6K

Undergrad Michelson-Morley Experiment: the importance of the laser position

Apr 10, 2019 · Replies 6 · Apr 11, 2019

Replies: 6

Views: 4K

Undergrad How can I find the width of the central diffraction maximum.

Apr 9, 2019 · Replies 1 · Apr 9, 2019

Replies: 1

Views: 11K

Undergrad Irradiance from this infrared light source after a diffuser

Apr 8, 2019 · Replies 6 · Apr 9, 2019

Replies: 6

Views: 2K

Graduate Rayleigh criterion when light phase is known

Apr 8, 2019 · Replies 4 · Apr 8, 2019

Replies: 4

Views: 4K

High School Light Beam fired 1 AU into space

Apr 5, 2019 · Replies 18 · Apr 7, 2019

Replies: 18

Views: 5K

Graduate Why does it not work to carry a laser and shine it on a light sail?

Apr 4, 2019 · Replies 13 · Apr 6, 2019

Replies: 13

Views: 2K

High School Seeing Merging Shadows in the Sunlight

Apr 6, 2019 · Replies 5 · Apr 6, 2019

Replies: 5

Views: 4K

High School Trivial questions regarding parallax and measurement of distances.

Apr 4, 2019 · Replies 7 · Apr 6, 2019

Replies: 7

Views: 5K

Undergrad What does the term "Typical Wavelength" mean in this context?

Apr 2, 2019 · Replies 3 · Apr 2, 2019

Replies: 3

Views: 4K

High School Can Electric & Magnetic Fields Coexist?

Mar 4, 2019 · Replies 18 · Apr 1, 2019

Replies: 18

Views: 15K

Undergrad Designing a reflection sundial for the southern hemisphere

Mar 12, 2016 · Replies 3 · Apr 1, 2019

Replies: 3

Views: 4K

Graduate Scattering direction and probability

Mar 28, 2019 · Replies 6 · Mar 30, 2019

Replies: 6

Views: 3K

Graduate Are there still open problems in classical wave optics?

Mar 28, 2019 · Replies 2 · Mar 29, 2019

Replies: 2

Views: 2K

Undergrad Does a Polarizer Alter the Shape of Airy Disks in Optical Systems?

Mar 27, 2019 · Replies 3 · Mar 29, 2019

Replies: 3

Views: 2K

Undergrad Focusing light with a light sail

Mar 28, 2019 · Replies 1 · Mar 28, 2019

Replies: 1

Views: 3K

Graduate How can the electric field of optical fibers be visualized?

Mar 27, 2019 · Replies 1 · Mar 27, 2019

Replies: 1

Views: 1K

Undergrad In what direction does a light wave vibrate?

Mar 9, 2019 · Replies 9 · Mar 24, 2019

Replies: 9

Views: 3K

Graduate What is the relationship between focal length and focus point in convex lenses?

Mar 22, 2019 · Replies 12 · Mar 23, 2019

Replies: 12

Views: 6K

Graduate Chief Ray Angle and Field of View

Mar 11, 2017 · Replies 21 · Mar 20, 2019

Replies: 21

Views: 16K

Graduate Principle of Least Action for optics?

Mar 16, 2019 · Replies 2 · Mar 20, 2019

Replies: 2

Views: 2K

High School Explaining Squaring Numbers & Light to a 5-Year-Old

Mar 14, 2019 · Replies 10 · Mar 19, 2019

Replies: 10

Views: 6K

Undergrad How was the speed of light calculated before the redefinition of the meter?

Mar 18, 2019 · Replies 8 · Mar 19, 2019

Replies: 8

Views: 4K

Undergrad How can we visualise a half period zone inside a zone plate?

Mar 15, 2019 · Replies 3 · Mar 15, 2019

Replies: 3

Views: 1K

Top