Menu

Navigation

More options

Style variation

Contact us

Optics Forum

Filters

High School Very Powerful Telescope to see 10 light years away at high resolution....

May 18, 2015 · Replies 1 · May 18, 2015

Replies: 1

Views: 1K

Undergrad Slight rearrangement of Newton's Law

May 18, 2015 · Replies 2 · May 18, 2015

Replies: 2

Views: 1K

Undergrad Sound Interference on a speaker

May 15, 2015 · Replies 2 · May 15, 2015

Replies: 2

Views: 2K

Undergrad Huygens principle at the boundary of a volume

May 15, 2015 · Replies 2 · May 15, 2015

Replies: 2

Views: 1K

Graduate How Do Longer UV Wavelengths Penetrate Deeper into Photopolymers?

May 11, 2015 · Replies 1 · May 15, 2015

Replies: 1

Views: 3K

Undergrad Understanding the Light Pattern of a Laser Through a Slit

May 14, 2015 · Replies 4 · May 14, 2015

Replies: 4

Views: 1K

Graduate Crossed polarizers and F-Stop relationship

May 14, 2015 · Replies 1 · May 14, 2015

Replies: 1

Views: 2K

Undergrad Optics - Imaging from focal plane

May 13, 2015 · Replies 1 · May 13, 2015

Replies: 1

Views: 1K

High School Odd Blinding blue light blinded me and 2 others - What is it

May 12, 2015 · Replies 12 · May 13, 2015

Replies: 12

Views: 2K

Graduate Powell Lens Equations for Gaussian to Flat Top Beam Conversion

Apr 16, 2015 · Replies 5 · May 13, 2015

Replies: 5

Views: 8K

High School Understanding Angular Spread: A Brief Explanation

May 12, 2015 · Replies 4 · May 12, 2015

Replies: 4

Views: 14K

Undergrad Is Bragg Diffraction Depicted Accurately in Common Diagrams?

May 9, 2015 · Replies 3 · May 9, 2015

Replies: 3

Views: 1K

Undergrad How to Optimize Sound Reflection with Multiple Types of Reflectors?

May 7, 2015 · Replies 20 · May 8, 2015

Replies: 20

Views: 6K

Graduate Photon Energy Stimulation of Atoms

May 7, 2015 · Replies 5 · May 8, 2015

Replies: 5

Views: 2K

Undergrad How Does Focal Length Affect Image Formation on the Retina?

May 4, 2015 · Replies 7 · May 7, 2015

Replies: 7

Views: 4K

Undergrad Why Does the Index of Refraction Vary by Light Color in Different Mediums?

May 6, 2015 · Replies 2 · May 6, 2015

Replies: 2

Views: 1K

Undergrad Please explain to me 'why' light is part defined by velocity

May 6, 2015 · Replies 3 · May 6, 2015

Replies: 3

Views: 1K

Graduate Accuracy of an Optical Spectrum Analyzer (OSA)

May 4, 2015 · Replies 5 · May 6, 2015

Replies: 5

Views: 2K

Graduate Photon Rocket vs Conventional Propellant Rocket

May 6, 2015 · Replies 4 · May 6, 2015

Replies: 4

Views: 2K

Undergrad Understanding Virtual Objects: Formation and Characteristics

May 1, 2015 · Replies 8 · May 2, 2015

Replies: 8

Views: 14K

Undergrad Real World Applications of Optical Cavities: What Can They Be Used For?

Apr 28, 2015 · Replies 8 · May 1, 2015

Replies: 8

Views: 2K

High School Have I Labeled 1/f=1/u+1/v Correctly?

Apr 30, 2015 · Replies 4 · May 1, 2015

Replies: 4

Views: 12K

Undergrad Bounce light back and forth between mirrors forever?

Apr 30, 2015 · Replies 4 · Apr 30, 2015

Replies: 4

Views: 4K

High School Center of Curvature: PhysicsClassroom.com

Apr 29, 2015 · Replies 9 · Apr 30, 2015

Replies: 9

Views: 3K

High School Object Distance for Mirrors versus Lenses

Apr 29, 2015 · Replies 4 · Apr 29, 2015

Replies: 4

Views: 1K

Graduate Calculating optical properties of an arbitrary gas?

Apr 28, 2015 · Replies 3 · Apr 29, 2015

Replies: 3

Views: 1K

Graduate What is the relationship between light and time?

Apr 28, 2015 · Replies 2 · Apr 28, 2015

Replies: 2

Views: 2K

Graduate Do parallel mirrors keep accelerating away from each other?

Apr 26, 2015 · Replies 9 · Apr 28, 2015

Replies: 9

Views: 2K

Graduate Diffraction effects in slit experiments

Apr 28, 2015 · Replies 1 · Apr 28, 2015

Replies: 1

Views: 1K

High School Can I Reach the End of a Rainbow with a Shovel?

Apr 26, 2015 · Replies 9 · Apr 27, 2015

Replies: 9

Views: 4K

Undergrad Lightning vs Hydrogen Fuel for Space Travel

Apr 19, 2015 · Replies 9 · Apr 27, 2015

Replies: 9

Views: 2K

Undergrad Why Are 488nm LED Options Hard to Find for Cell Sorting?

Apr 26, 2015 · Replies 4 · Apr 27, 2015

Replies: 4

Views: 6K

Undergrad Light Bending: Why Don't Waves Bend at Normal Incidence?

Apr 27, 2015 · Replies 3 · Apr 27, 2015

Replies: 3

Views: 1K

Undergrad Does the speed of light remain constant in an expanding universe?

Apr 24, 2015 · Replies 4 · Apr 26, 2015

Replies: 4

Views: 2K

Graduate Questions about Lock-in detection in optical reflectivity

Apr 24, 2015 · Replies 5 · Apr 25, 2015

Replies: 5

Views: 2K

Graduate IR LED irradiance, radiant exposure and radiance

Apr 20, 2015 · Replies 1 · Apr 25, 2015

Replies: 1

Views: 2K

Graduate Modeling Converging Spherical Waves in Optics

Apr 24, 2015 · Replies 3 · Apr 25, 2015

Replies: 3

Views: 2K

High School Approximation in understanding the speed of light

Apr 24, 2015 · Replies 6 · Apr 24, 2015

Replies: 6

Views: 2K

Undergrad How Does Changing Wavelength Affect the Central Peak in Single-Slit Diffraction?

Dec 14, 2014 · Replies 14 · Apr 24, 2015

Replies: 14

Views: 4K

Undergrad How do water waves and light waves propagate in different directions?

Apr 21, 2015 · Replies 2 · Apr 23, 2015

Replies: 2

Views: 3K

High School Wavelength of light in relation to speed

Apr 22, 2015 · Replies 11 · Apr 23, 2015

Replies: 11

Views: 3K

Undergrad How to convert the intensity of light of a star

Apr 23, 2015 · Replies 3 · Apr 23, 2015

Replies: 3

Views: 2K

Undergrad Regarding Polarizer and viewing sun

Apr 21, 2015 · Replies 3 · Apr 22, 2015

Replies: 3

Views: 2K

Graduate Sunlight Intensity Concentrator - Idea to boost solar energy

Apr 16, 2015 · Replies 24 · Apr 21, 2015

Replies: 24

Views: 4K

Graduate Generating & Emitting 50-100 Petaherz: Tools & Possible?

Apr 20, 2015 · Replies 2 · Apr 20, 2015

Replies: 2

Views: 2K

Graduate Coupling Xe Arc Lamp into Fiber Bundle

Apr 17, 2015 · Replies 6 · Apr 20, 2015

Replies: 6

Views: 4K

High School Why does light refract toward the normal

Apr 17, 2015 · Replies 10 · Apr 17, 2015

Replies: 10

Views: 3K

Undergrad Constructive interference and energy conservation

Apr 16, 2015 · Replies 10 · Apr 17, 2015

Replies: 10

Views: 3K

Undergrad Unveiling the Mystery of Invisible Spider Webs

Apr 14, 2015 · Replies 1 · Apr 14, 2015

Replies: 1

Views: 2K

Undergrad How shape of pattern affects the behaviour of light

Apr 10, 2015 · Replies 3 · Apr 14, 2015

Replies: 3

Views: 1K

Graduate Ray Tracing - Optics - Bend light with circular lenses

Apr 3, 2015 · Replies 3 · Apr 13, 2015

Replies: 3

Views: 2K

Undergrad Confusion regarding Interference of light

Apr 8, 2015 · Replies 6 · Apr 13, 2015

Replies: 6

Views: 2K

Undergrad Light Refraction on the Surface of a Sphere

Apr 9, 2015 · Replies 3 · Apr 13, 2015

Replies: 3

Views: 3K

High School Red/Blue laser intencity Youngs double slit experiment?

Apr 11, 2015 · Replies 1 · Apr 11, 2015

Replies: 1

Views: 2K

High School Laser Field Explained - Understand What It Is

Apr 10, 2015 · Replies 6 · Apr 11, 2015

Replies: 6

Views: 3K

Graduate Circular polarization and Read3D glasses

Apr 11, 2015 · Replies 2 · Apr 11, 2015

Replies: 2

Views: 1K

Graduate Acceptable Band Pass for a Monochromator?

Apr 9, 2015 · Replies 1 · Apr 9, 2015

Replies: 1

Views: 1K

Undergrad Why do our eyes need to be far from the lens to view a real image?

May 4, 2014 · Replies 7 · Apr 9, 2015

Replies: 7

Views: 5K

Undergrad Optical Adder Using 2 Lasers & Selectable Intensities

Apr 7, 2015 · Replies 5 · Apr 9, 2015

Replies: 5

Views: 2K

Undergrad Does light reach every single part of space?

Apr 6, 2015 · Replies 23 · Apr 9, 2015

Replies: 23

Views: 3K

Graduate (laser ablation) what is difference between plume and plasma?

Apr 6, 2015 · Replies 1 · Apr 9, 2015

Replies: 1

Views: 3K

High School Low tech telecommunications (light)

Apr 5, 2015 · Replies 24 · Apr 8, 2015

Replies: 24

Views: 2K

Graduate How Does Light-Matter Interaction Challenge Classical and Quantum Views?

Apr 6, 2015 · Replies 7 · Apr 8, 2015

Replies: 7

Views: 2K

High School What is the squiggly thing over B

Apr 8, 2015 · Replies 1 · Apr 8, 2015

Replies: 1

Views: 1K

Graduate How to Figure Required Telescope Diameter?

Apr 7, 2015 · Replies 1 · Apr 8, 2015

Replies: 1

Views: 1K

Undergrad Diffraction grating with high intensity in first order

Apr 7, 2015 · Replies 1 · Apr 8, 2015

Replies: 1

Views: 1K

Undergrad Why is a point light source required for Schlieren Photograph?

Apr 5, 2015 · Replies 3 · Apr 7, 2015

Replies: 3

Views: 4K

Undergrad Optics cornu spiral and diffraction

Apr 6, 2015 · Replies 1 · Apr 6, 2015

Replies: 1

Views: 4K

Undergrad How does light move in a vacuum?

Apr 6, 2015 · Replies 2 · Apr 6, 2015

Replies: 2

Views: 2K

Graduate Is polarised light a result of destructive interference?

Apr 3, 2015 · Replies 8 · Apr 6, 2015

Replies: 8

Views: 2K

Graduate Magnification through a lens at various diameters

Apr 6, 2015 · Replies 1 · Apr 6, 2015

Replies: 1

Views: 1K

Undergrad Sinusoidal path of light video

Apr 1, 2015 · Replies 4 · Apr 6, 2015

Replies: 4

Views: 1K

Graduate Exploring Photon Transmitters and Receiving Antennas

Apr 5, 2015 · Replies 6 · Apr 5, 2015

Replies: 6

Views: 2K

High School Black Lights and plain CFL and Cancer?

Apr 3, 2015 · Replies 6 · Apr 4, 2015

Replies: 6

Views: 3K

Graduate Spatial Light Modulators and Fourier Optics

Mar 30, 2015 · Replies 4 · Apr 4, 2015

Replies: 4

Views: 2K

Graduate Photons emitted between energy levels?

Apr 3, 2015 · Replies 2 · Apr 3, 2015

Replies: 2

Views: 1K

Undergrad Where is fringe spacing measured from with white light?

Apr 3, 2015 · Replies 1 · Apr 3, 2015

Replies: 1

Views: 2K

Undergrad Why Can't We See Diffraction from Metal Surfaces?

Apr 3, 2015 · Replies 4 · Apr 3, 2015

Replies: 4

Views: 2K

High School Can Coherent Light Waves Interfere with Each Other?

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

Replies: 5

Views: 7K

Undergrad How would you convert visible light to infrared or microwave

Apr 2, 2015 · Replies 3 · Apr 2, 2015

Replies: 3

Views: 6K

Undergrad Determining the brightness on a projected surface

Apr 1, 2015 · Replies 2 · Apr 2, 2015

Replies: 2

Views: 2K

Undergrad Reflectivity of a drop of water

Apr 1, 2015 · Replies 1 · Apr 1, 2015

Replies: 1

Views: 1K

Undergrad Metal reflects light & Antenna absorbs light & cuircuit

Mar 29, 2015 · Replies 9 · Apr 1, 2015

Replies: 9

Views: 2K

Undergrad Fibre optics and multipath disspersion

Apr 1, 2015 · Replies 3 · Apr 1, 2015

Replies: 3

Views: 2K

Undergrad Concentrating sunlight to accomplish projection (Art project)

Mar 31, 2015 · Replies 4 · Mar 31, 2015

Replies: 4

Views: 2K

Graduate Quantifying Observational Error in FWHM Measurements of Optical Signals

Mar 29, 2015 · Replies 12 · Mar 31, 2015

Replies: 12

Views: 7K

Undergrad Debug help: optical laser interference setup fails to work

Mar 29, 2015 · Replies 8 · Mar 31, 2015

Replies: 8

Views: 3K

High School Prism -- brightness of a ray of white light as it passes through a prism?

Mar 30, 2015 · Replies 4 · Mar 31, 2015

Replies: 4

Views: 2K

Graduate Stoke parameters and incoherent light

Mar 25, 2015 · Replies 4 · Mar 30, 2015

Replies: 4

Views: 1K

Graduate Infrared spectroscopy to find water absorption lines

Mar 29, 2015 · Replies 5 · Mar 30, 2015

Replies: 5

Views: 2K

Graduate What will happen if light is longitudinal wave?

Mar 24, 2015 · Replies 18 · Mar 29, 2015

Replies: 18

Views: 5K

Undergrad Graphene Light Bulb: Advantages & Tech Breakthrough

Mar 29, 2015 · Replies 6 · Mar 29, 2015

Replies: 6

Views: 2K

Graduate Understanding the Focal Plan of Parallel Light Through a Thin Lens

Mar 27, 2015 · Replies 3 · Mar 29, 2015

Replies: 3

Views: 2K

Undergrad Rutherford Scattering model geometry

Mar 28, 2015 · Replies 2 · Mar 28, 2015

Replies: 2

Views: 2K

High School Calculating the distance between the optical center and focal length

Mar 27, 2015 · Replies 1 · Mar 27, 2015

Replies: 1

Views: 4K

Undergrad Light pipes - is there a limit

Mar 24, 2015 · Replies 20 · Mar 27, 2015

Replies: 20

Views: 4K

Undergrad What are the common methods for creating a laser point cloud?

Mar 24, 2015 · Replies 6 · Mar 26, 2015

Replies: 6

Views: 2K

Graduate Telecentric entrance pupil - Optics

Mar 23, 2015 · Replies 3 · Mar 25, 2015

Replies: 3

Views: 2K

Undergrad Microwave vs Radiowave communications & analogue and digital

Mar 25, 2015 · Replies 3 · Mar 25, 2015

Replies: 3

Views: 3K

Undergrad Fiber Optic Loop: How Long Before Photon Dissipation?

Mar 24, 2015 · Replies 4 · Mar 25, 2015

Replies: 4

Views: 2K

Top