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High School Is there a limit to how long radio wavelengths can be?

  • Lost in Space
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Graduate Spherical aberration in high NA objectives

  • omg!
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Undergrad Difference between plano-convex and biconvex lens

  • klng
  • · Replies 8 ·
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Undergrad Why does my laser power calculation give 300kW for a 3mJ pulse?

  • DanSandberg
  • · Replies 10 ·
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10

Undergrad Calculating the Magnitude of the ISS

  • moon1989
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2

Graduate How does phase shift in a dielectric explain beam diffraction?

  • wil3
  • · Replies 6 ·
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Graduate Interference pattern after the region of the interference

  • valeriy2222
  • · Replies 5 ·
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5

Undergrad Why does light pass through three polarizing filters at angles?

  • page123
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1

High School Usually when I don't know what something is, I look it up, then I

  • nhmllr
  • · Replies 9 ·
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9

Undergrad Car traveling away from you and turns the lights on, speed of light

  • nitai108
  • · Replies 5 ·
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5

Undergrad Photonics System: LED Signal Variation - Intensity vs. Amplitude

  • Shark 774
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Graduate Optics - Transmission of plane wave at oblique incidence

  • Flexington
  • · Replies 3 ·
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3

Undergrad 3D glasses and polarization, how it works?

  • linklink
  • · Replies 1 ·
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1

High School Defraction of Light: Why White Ray of Light Refracts in Prism

  • vinanxi
  • · Replies 1 ·
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1

Undergrad Hi Guys,When the eye sees an object, there has to be light

  • Pierre007080
  • · Replies 4 ·
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4

High School Objects that react physically to light?

  • nlaham
  • · Replies 14 ·
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14

Graduate Why do things have the color they have?

  • quasar987
  • · Replies 13 ·
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13

High School My tutor set me out to figure out how shadows are 3D.I'm 14 so I

  • Cbray
  • · Replies 14 ·
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14

Undergrad Why is it that when we change the light from un polarized to polarized

  • elabed haidar
  • · Replies 6 ·
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6

Undergrad Why does a green laser appear orange when shining on pink neon?

  • Teln3t
  • · Replies 6 ·
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6

Graduate What Angle Must Light Make at the Water-Oil Interface to Prevent Escape?

  • rbnphlp
  • · Replies 1 ·
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Graduate Modulating Laser Beam with Radio Frequency - Bill

  • Bill E
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2

Graduate In the following figure, the space b/w the glass lenses is filled with

  • zorro
  • · Replies 3 ·
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Graduate Understanding wavevector components and their role in k-space

  • iLIKEstuff
  • · Replies 8 ·
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8

High School 2 lights with unequal brightness

  • jubbly
  • · Replies 1 ·
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1

Undergrad UV Laser Mirrors for 190nm Range - Find Here!

  • montser
  • · Replies 3 ·
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3

Graduate Mirrors that reflect UV laser at 190nm with >95% reflectance

  • montser
  • · Replies 1 ·
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1

Graduate Predicting the Future and Light Speed

  • ejproducts
  • · Replies 3 ·
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3

Undergrad Different Wavelengths of Light in Particle View

  • Vorde
  • · Replies 2 ·
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2

Undergrad Why is any wave defined by the wavelength, but not by the amplitude?

  • Soumen2010
  • · Replies 4 ·
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4

High School How Does Colored Light Affect Water Temperature?

  • s0610038
  • · Replies 5 ·
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5

Undergrad One question when we have a unpolarized ray and enters the polarized

  • elabed haidar
  • · Replies 3 ·
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3

Undergrad Hello, light freaks: UV radiant intensity of the sun at earth surface

  • Zellbiologie
  • · Replies 2 ·
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2

Graduate Invisibility cloak possible? how close are we?

  • Rob060870
  • · Replies 13 ·
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13

Graduate Can Photons Actually Orbit Massive Objects?

  • sheriefer
  • · Replies 2 ·
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2

Undergrad What will be the speed of light?

  • Sanket Karnik
  • · Replies 5 ·
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5

Undergrad Young's double slits exact formula without small angle approximation

  • metalmaniac
  • · Replies 2 ·
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Undergrad Why can metal mesh block microwaves smaller than the wavelength?

  • E92M3
  • · Replies 7 ·
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Graduate On Physical Lines of Force: elasticity, density and the speed of light

  • Dunnis
  • · Replies 1 ·
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Undergrad What causes the unpredictable path of lightning?

  • spliffter
  • · Replies 1 ·
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1

Graduate Evanescent waves, wavevector, and Poynting vector

  • wil3
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Graduate Designing a special wide angle lens

  • vinniewryan
  • · Replies 22 ·
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22

Graduate Could Morse Code Be Instantaneous on a Million Light-Year Pole?

  • friendlycello
  • · Replies 11 ·
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11

Undergrad Intensity of single slit and double slit

  • gsingh2011
  • · Replies 1 ·
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1

Graduate Two standing waves forming a traveling wave

  • fisico30
  • · Replies 2 ·
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Undergrad Is there plasma that doesn't radiate visible light? I think the

  • Varon
  • · Replies 36 ·
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Graduate Change the direction of light without using matter

  • LightNg
  • · Replies 16 ·
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16

High School Any tutorial on optic physics using 2 lenses (+ and -)

  • EternityMech
  • · Replies 1 ·
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High School Speed of light and small distances

  • masteri
  • · Replies 6 ·
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6

Undergrad Variations in Refractive Index of atmosphere with altitude ?

  • kryptic3k
  • · Replies 20 ·
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20

High School Why do red, blue, and green mix to make all colors and white?

  • nhmllr
  • · Replies 13 ·
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High School I was wondering would it be possible to have more than one rainbow

  • Howlin
  • · Replies 15 ·
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Undergrad Can you trap light between two mirrors for infinite energy?

  • Mutsi
  • · Replies 18 ·
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18

Graduate Energy of interfering standing wave

  • jagedlion
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Graduate Why does light change direction when entering a new medium?

  • jnorman
  • · Replies 1 ·
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Graduate Dark spot in Fraunhofer diffraction

  • thepopasmurf
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3

Graduate Protons, Photons, and ionic states of matter with one type

  • nuiluidwde
  • · Replies 1 ·
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Undergrad Cause of interference pattern in the Michelson Interferometer.

  • Zanychap
  • · Replies 6 ·
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6

High School Is amplitude always perpendicular to the rest axis?in a wavelength

  • isyang94
  • · Replies 1 ·
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High School Wavelengths of different colour of light

  • s0610038
  • · Replies 5 ·
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Graduate Can a person push off from a light-speed spaceship and move faster?

  • michonamona
  • · Replies 47 ·
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Undergrad Is monochromatic light defined by frequency or wavelength?

  • JJBladester
  • · Replies 10 ·
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Undergrad How Do EM Waves Stretch and Interact in Space?

  • hareeshgnair
  • · Replies 3 ·
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Graduate (More or less conceptual) questions about the photon

  • trand
  • · Replies 10 ·
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10

High School Snell's Law and the particle model for light

  • omgwtfitsp
  • · Replies 2 ·
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Undergrad What Other Types of Information Can We Gather from Intergalactic Bodies?

  • zeromodz
  • · Replies 31 ·
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Undergrad What happens if a laser hits exactly at the corner of two mirrors?

  • IK0
  • · Replies 6 ·
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6

Undergrad Why Is an Image at Infinity Called Highly Magnified?

  • skqureshi
  • · Replies 1 ·
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1

Undergrad Understanding Single Mode Fiber and Cladding Materials

  • dervast
  • · Replies 8 ·
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8

Undergrad VIBGYOR: Black Letter's Place in the Glass Slab

  • Samar117
  • · Replies 4 ·
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4

High School What happens when two mirrors are placed directly on top of each other?

  • Anonymous9001
  • · Replies 5 ·
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5

High School Why does a rainbow stay still while it's raining?

  • cragar
  • · Replies 3 ·
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3

High School Why is light assumed to travel in straight lines?

  • AstrophysicsX
  • · Replies 4 ·
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4

Undergrad How far does light from a 1 candela source remain detectable?

  • zeromodz
  • · Replies 47 ·
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Undergrad Single slit interference and Diffraction Grating

  • elemis
  • · Replies 2 ·
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2

Undergrad Can Negative Speed of Light Allow Time Travel?

  • hty226
  • · Replies 8 ·
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8

Graduate Why does diffraction by an edge depend on beam angle?

  • Hodranoel
  • · Replies 2 ·
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2

Undergrad Laser Split Into Camera Lens Pattern: What is it?

  • Hodranoel
  • · Replies 1 ·
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1

Undergrad Is it necessary to talk about photons when discussing interference in light?

  • a.ratnaparkhi
  • · Replies 11 ·
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11

High School Solving 910nm-382nm=528nm: Is It Feasible?

  • davesplays
  • · Replies 3 ·
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3

High School Why can't we store light between two mirrors?

  • fluoronator
  • · Replies 18 ·
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18

Graduate What happens if you fire a photon at an atom?

  • hawaiifiver
  • · Replies 2 ·
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2

High School Why Do Bright Lights Have Rays

  • peter.ell
  • · Replies 4 ·
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4

High School Are There Safe Laser Pointers for Eye Use in Clubs and Shows?

  • rodsika
  • · Replies 7 ·
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7

Graduate Infinity corrected lens - expanding before tube lens?

  • donroy81
  • · Replies 4 ·
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4

Undergrad Finding coating index and thickness for 600nm anti-reflection layer

  • Nymn
  • · Replies 1 ·
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1

Graduate Physics of laser pointer attachments: stars, butterflies, etc.

  • iLIKEstuff
  • · Replies 2 ·
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2

High School Natural magnification(special circumstances)

  • pallidin
  • · Replies 7 ·
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7

Undergrad Finding the sun's position using sky polarization

  • jangheej
  • · Replies 4 ·
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4

Undergrad Deriving the lens formula for a convex lens-say

  • ananthu
  • · Replies 5 ·
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5

Graduate Question: atomic polarizability (Purcell book)

  • bobfei
  • · Replies 2 ·
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2

Undergrad Supersonic Flight: How Does Speed Impact Lift?

  • fatlady1ac
  • · Replies 2 ·
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Graduate What are p(z) and q(z) in Milonni's Gaussian beam equation?

  • contempquant
  • · Replies 1 ·
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Undergrad Can You Hear Sound in Room Corner by Door?

  • RedX
  • · Replies 18 ·
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18

Graduate Example of calculation of radiance

  • mnb96
  • · Replies 5 ·
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Undergrad What do Fresnel zone ellipsoids represent in antenna transmission?

  • unseensoul
  • · Replies 1 ·
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Graduate Light in medium, time gets affected?

  • A Dhingra
  • · Replies 3 ·
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3

Graduate Refractive index of materials at rf frequencies to make a smaller wire antenna

  • material
  • · Replies 3 ·
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Undergrad Thin Film Interference and phasing

  • jaredogden
  • · Replies 1 ·
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1

Graduate Does peak or average power determine laser damage to optical components?

  • narra
  • · Replies 8 ·
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