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Undergrad Plano-convex lens, which side should face the laser source

  • nordmoon
  • · Replies 1 ·
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1

High School Why do we have minimum deviation of a prism?

  • Sheldon11
  • · Replies 9 ·
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9

Undergrad Where Can I Find Data on the IR Transmission of Silicon and Germanium?

  • minerva
  • · Replies 1 ·
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1

Undergrad To measure the energy density of a (brief) laser pulse

  • lightarrow
  • · Replies 29 ·
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29

Undergrad Does the picture change if we turn a thin lens around

  • HastiM
  • · Replies 2 ·
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2

High School How many energy requires to increase 1℃ of 1 liter of water using MICROWAVE?

  • Tamilarasan
  • · Replies 2 ·
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2

High School Is the eye more sensitive to intermittent light/flashlight?

  • Tsunnnami
  • · Replies 10 ·
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10

Graduate Why do massless particles travel at light speed?

  • bluecap
  • · Replies 19 ·
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19

Graduate Can two parallel photons in a vacuum get arbitrarily close without collapsing?

  • slow
  • · Replies 5 ·
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5

Undergrad Achromatic prism: Why subtract both angles of deflection?

  • HastiM
  • · Replies 1 ·
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1

Graduate Condition for circular-wire polarizer to transmit no light

  • Christofer Br
  • · Replies 8 ·
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8

Undergrad Why did fringes form on the floor from my night lamp?

  • Jigyasa
  • · Replies 17 ·
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17

Undergrad Why do signals to tv aerials need to be polarised?

  • Giada
  • · Replies 2 ·
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2

Graduate How does an antireflective coating redirect reflected light?

  • Christofer Br
  • · Replies 2 ·
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2

Graduate Can a single metal stripe reflect polarized light specularly?

  • Christofer Br
  • · Replies 8 ·
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8

Undergrad How well can we 'see' at different wavelengths?

  • physea
  • · Replies 4 ·
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4

Graduate Can a single wire in a grid polarizer produce specular reflection?

  • Christofer Br
  • · Replies 1 ·
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1

Graduate Does a lever transmit force faster than light?

  • ISamson
  • · Replies 14 ·
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14

High School Is laser beam visible in vacuum?

  • Rigel84
  • · Replies 1 ·
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1

Graduate Lift coefficient of rocket at vertical flight

  • krihamm
  • · Replies 14 ·
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14

Undergrad Is it possible to see objects at 600m distance in infrared

  • Calconceptofnumber1
  • · Replies 4 ·
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4

Undergrad Rayleigh Scattering and linear polarization

  • Decimal
  • · Replies 2 ·
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2

Undergrad Width of Spectrum produced by a prism?

  • itsnaresh
  • · Replies 3 ·
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3

Graduate Transmissivity of stacked absorbing foils with multiple reflections

  • Christofer Br
  • · Replies 5 ·
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5

Undergrad Amplitudes in a Michelson interferometer

  • Decimal
  • · Replies 1 ·
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1

Graduate Jones vectors for circular polarization

  • Decimal
  • · Replies 4 ·
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4

High School Combustion Emit Light: Reasons & Benefits

  • bocchesegiacomo
  • · Replies 1 ·
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1

Graduate Rectilinear propagation of light

  • Vivek98phyboy
  • · Replies 1 ·
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1

Undergrad Optics: How would you determine wavelength?

  • Aaron Van Rossum
  • · Replies 3 ·
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3

Graduate Estimating the FOV of a thin sliced plano-convex cylindrical lens

  • heapsian
  • · Replies 3 ·
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3

Graduate Reasoning for photon having no mass

  • JulianM
  • · Replies 21 ·
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21

Graduate Why does polarizability have units of volume?

  • Steven Hanna
  • · Replies 3 ·
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3

Undergrad Trying to understand diffraction

  • Jigyasa
  • · Replies 2 ·
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2

Graduate PDLC film or glass for optical shutters or shutter glasses

  • kekkked
  • · Replies 20 ·
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20

Undergrad How does the diffraction grating in Canadian currency work?

  • Paddyster
  • · Replies 2 ·
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2

Undergrad Laser pulse: spectral width vs time

  • SchroedingersLion
  • · Replies 5 ·
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5

Graduate How does superposition work in quantum mechanics?

  • Sundown444
  • · Replies 11 ·
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11

Undergrad Can incoherent waves interfere?

  • Spar
  • · Replies 9 ·
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9

Graduate What is the correct formula for refraction at an interface between two media?

  • Chuck Berry Rules
  • · Replies 22 ·
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22

Graduate Birefringence in in uniaxial optical media and Snell's law

  • SchroedingersLion
  • · Replies 6 ·
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6

Undergrad About a concave mirror with a large focal length (1000mm)

  • nikosb
  • · Replies 6 ·
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6

Graduate Huygens-Fresnel principle of diffraction

  • Decimal
  • · Replies 5 ·
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5

High School Is light bending around an obstacle diffraction?

  • ZHIHZ
  • · Replies 16 ·
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16

Graduate Why is the photon's mass zero in classical equations for light?

  • JulianM
  • · Replies 27 ·
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27

Graduate Why don't photons have mass if E=mc² predicts infinite mass at light speed?

  • Albert Thomas
  • · Replies 18 ·
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18

The homopolar generator: an analytical example

  • vanhees71
  • · Replies 8 ·
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8

Graduate How diffraction pattern reconstructs into image in Abbe theory

  • JohnSW
  • · Replies 12 ·
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12

Undergrad Are there any units of measurement between 10^3 and 10^6 in the metric system?

  • DS2C
  • · Replies 7 ·
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7

High School Why do reflected sunrays from a cylindrical chair leg create rings on the floor?

  • Adel Makram
  • · Replies 6 ·
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6

High School Why does cold air seem to optically zoom in far-away objects?

  • Fanny Viksten
  • · Replies 4 ·
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4

Undergrad Measurement of the Speed of light

  • sqljunkey
  • · Replies 4 ·
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4

Undergrad How can we melt ice in a microwave efficiently?

  • I like Serena
  • · Replies 59 ·
2
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59

Undergrad More slits, farther maxima of interference patterns, why?

  • Cardinalmont
  • · Replies 1 ·
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1

Graduate Interference fringes in Absorption spectra

  • sounouhid
  • · Replies 6 ·
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6

Undergrad All-fiber Mach-Zehnder interferometer

  • boxfullofvacuumtubes
  • · Replies 1 ·
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1

High School Device with which I can measure the frequency of light

  • Sanev
  • · Replies 3 ·
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3

Graduate Blue Light from a Blackbody Radiator

  • Arup Biswas
  • · Replies 4 ·
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4

Graduate The validity of ray optics in telescopes

  • esha
  • · Replies 8 ·
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8

Graduate Single Slit Diffraction and Interference Maxima

  • Das apashanka
  • · Replies 4 ·
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4

Undergrad What causes disturbance on my phone camera?

  • Calconceptofnumber1
  • · Replies 10 ·
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10

Undergrad What is meant by "low frequencies"? (EM skin depth question)

  • cozycoz
  • · Replies 3 ·
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3

Graduate Direct Modulation and Photon Lifetime - Laser

  • ulver48
  • · Replies 2 ·
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2

Undergrad What Causes Equal Interference Amplitudes in Light Diffraction Patterns?

  • waley
  • · Replies 8 ·
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8

Graduate Creating Coherent Light from UV LEDs and Pinhole Aperture

  • dlbi
  • · Replies 2 ·
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2

High School Are the Sun's rays reaching us always parallel?

  • navneet9431
  • · Replies 45 ·
2
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45

Undergrad Overview of General Fresnel Equations + Complex IORs

  • Geometrian
  • · Replies 6 ·
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6

Undergrad Single Slit and Diffraction Grating Formulas

  • Abu
  • · Replies 6 ·
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6

High School The relation between photons and waves

  • Joao
  • · Replies 10 ·
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10

Graduate How Is the Minimum Bend Radius of a Fiber Optic Cable Determined?

  • doggydan42
  • · Replies 5 ·
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5

High School Objects get smaller as they become more distant

  • Tio Barnabe
  • · Replies 13 ·
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13

Undergrad Why are microwave oven grid holes smaller than the microwave wavelength?

  • this_tim
  • · Replies 9 ·
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9

Undergrad Experimental Demonstration of the Raman - Nath Effect

  • Wrichik Basu
  • · Replies 6 ·
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6

Graduate Can Quantum Laser Sintering Revolutionize 3D Printing?

  • evgenynn
  • · Replies 2 ·
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2

Undergrad Image if a mirror is placed at the focal distance of a biconvex lens

  • HastiM
  • · Replies 8 ·
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8

Graduate Deriving Polar Coordinates Without Cartesian System

  • Mr Davis 97
  • · Replies 5 ·
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5

Graduate Building a pin-bar TEA CO2 laser

  • reese houseknecht
  • · Replies 1 ·
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1

Undergrad The crossed ladder problem and optics mirror/lens equation

  • Vriska
  • · Replies 2 ·
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2

Undergrad Could lightning be creating antimatter in our atmosphere?

  • ISamson
  • · Replies 1 ·
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1

High School Distortions in time when going near light speed

  • Abphysics
  • · Replies 10 ·
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10

Graduate Does black hole stop light or time?

  • Jim cook
  • · Replies 10 ·
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10

Undergrad Methods of Trapping Laser Light

  • Dohmer
  • · Replies 22 ·
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22

Undergrad Is this book correct regarding waves in even dimensions?

  • Roberto Valente Neto
  • · Replies 5 ·
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5

Graduate Harvard Scientists Create New States of Light

  • jedishrfu
  • · Replies 5 ·
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5

Undergrad Diffraction and gravitational lensing

  • Dylanden
  • · Replies 3 ·
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3

Graduate Does reflection occur when phase index equals zero in a plasma?

  • carlos-carlos
  • · Replies 2 ·
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2

Undergrad Seeing more than the visible light spectrum

  • Frozen
  • · Replies 28 ·
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28

Undergrad Why do our eyes perceive only a specific range of electromagnetic radiation?

  • Graeme M
  • · Replies 66 ·
3
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66

Graduate How can X-ray energy transitions be identified?

  • Gevorg
  • · Replies 1 ·
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1

Undergrad Can a 1microsecond 250mW 980nm laser achieve air breakdown?

  • reese houseknecht
  • · Replies 10 ·
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10

High School Non-polarizing beamsplitter cube reflecting beam in all four directions

  • boxfullofvacuumtubes
  • · Replies 4 ·
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4

Undergrad Fresnel and Arago spot experiment with light sources and shadows

  • Luc B
  • · Replies 8 ·
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8

Graduate Calculating how many Joules are required to make a photon

  • reese houseknecht
  • · Replies 21 ·
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21

Undergrad Can photons be detected at any angle when they hit a surface?

  • Curious
  • · Replies 24 ·
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24

Graduate Does attenuation affect subsequent interference?

  • Swamp Thing
  • · Replies 4 ·
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4

High School How can this interesting set of mirrors be constructed?

  • Wrichik Basu
  • · Replies 3 ·
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3

Graduate Laser Crystals -- effects of crystal size

  • Chemmjr18
  • · Replies 5 ·
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5

Graduate Why don't axial modes disappear when gain saturates below threshold?

  • ulver48
  • · Replies 4 ·
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4

Graduate Determining which energy level transfers cause peaks in x-ray spectra

  • lrcarr
  • · Replies 1 ·
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1

Undergrad Why Isn't My OLED Screen Image at Infinity in My HUD Setup?

  • Smooth
  • · Replies 2 ·
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2

Undergrad Applications for radiation-hard CMOS light sensors

  • TCL-Experte
  • · Replies 12 ·
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12