Optics Forum

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Undergrad Viewing 1k x 1k slab of desert sand during extreme cold/hot temps?
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Undergrad How Can I Build an Effective DIY Helmet-Mounted HUD?
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High School Can Lasers Really Create a Functional Light Saber?
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Graduate Ansys FDTD simulation for phase change due to reflection
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High School Could you use the Moon to reflect sunlight onto a solar sail?
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Undergrad Interference of two ultra short laser pulses
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Undergrad Prism Spectrometer Objective: Optics Question
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Undergrad How to narrow a beam to 1 mm diameter?
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High School Questions about the Paraxial region for a single spherical surface
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Graduate Collimation of a Gaussian beam
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Undergrad Factors that influence depth of field
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Undergrad Questions about a Laser Interferometer pattern
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Undergrad Density fluctuations and the color of the sky
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Undergrad Why was a HAM radio license required to operate early lasers?
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Graduate Fourier Optics: Why a Plane Wave contributes to just a single point
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Undergrad Will cooling or heating a pair of binoculars change the transmitted image?
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Undergrad Permittivity (epsilon) change via temperature + optics effect?
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Undergrad Microring resonator matrix
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High School Mirror phenomenon — Concentric halos around eyes in a foggy bathroom
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High School Why does light diffraction create circular patterns?
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High School How would someone see light from something like a flashlight in a tunnel?
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Undergrad Where to Find In-Depth Resources on the Physics of CDs/DVDs?
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High School Did Thomas Young Misinterpret His Double Slit Experiment Results?
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High School Horizon and Curvature Observations
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Undergrad Laser and nano-holes experiment
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Undergrad Measure the transmission curve and wavelengths of colored mineral glass
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High School How to build a simple polarization filter
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High School Light beams and their reflection
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High School How to Troubleshoot a Lens Focusing Issue with a DIY DSLR Lens
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10
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Undergrad What Are Co-Phasal Wave Fronts in Fizeau Interferometry?
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7
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High School Explanation for bright fringes in Single Slit Diffraction
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4
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Undergrad Dispersion Relation in Different Media
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Undergrad Why Are Reflected Rays Often Ignored in Lens Studies?
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Undergrad Lumens and actual power of luminous flux
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Undergrad Single-Slit Diffraction -- Deriving the relation for the minima
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Graduate Can someone explain this statement on luminous transmittance?
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Undergrad What travels faster: visible light in water or X-rays in liquid mercury?
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High School Why is there a second black ring in Pfund's method with water on the Petri Dish?
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Undergrad Does a Fabry Perot cavity charge in discrete steps?
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Graduate Mach Zehnder Interferometer Interference fringes issue
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Graduate Simulating collecting efficency of a LiDAR
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Graduate Question about detector and lens
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Undergrad Geometry of Cherenkov radiation
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High School Understanding Corrective Lenses: Examining Reversed Prescriptions
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Graduate About collimation in Czerny-Turner spectrometers
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Undergrad How to improve the accuracy of Young's double slit experiment?
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Undergrad Calculating the Raleigh Criterion constant to 99 significant figures
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Undergrad Need Help Identifying Old Optic Device
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6
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Undergrad How to calculate incident light on surface with multiple orientations?
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Undergrad Coherent two-photon lidar...does this mean lidar range is greater?
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Undergrad Lens Calculations to Focus Light
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Undergrad How does our brain differentiate between a source of light and a painted circle?
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Undergrad What website/software can draw optics setups like this?
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Undergrad Making LED bulbs safer: Health and LEDs
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Undergrad Radiant Intensity from Radiant Power and Intensity Distribution
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Graduate Diffraction theory, power density and angle of incidence
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Undergrad Help with sourcing a specific type of integrating sphere
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Undergrad Measuring reflectance of a non-planar object w/ an integrating sphere
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Undergrad Creating a wavelength selectable light source with diffraction grating
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Undergrad What happens if I place light sources on the plane perpendicular to the principle axis of cylindrical lens?
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Undergrad How to find the orientation of polarization of a polarizer
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Undergrad Can n-slit interference produce subwavelength stripes?
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High School (Huygens) Irving Giant Pinhole variation: Extend it with a 70 mm tube?
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Undergrad How Does Diffraction Influence Shadows and Optical Observations?
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Undergrad Optical Effect: curved light source when seen through the bus window
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Undergrad Can an Aspheric Lens Narrow the FOV for Motion Detection Systems?
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Undergrad How is IR ink able to be seen with specialized filters?
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Undergrad Can I Use Additional Wavelengths for a More Advanced Hue Calculation?
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Undergrad Applications for negative radiation pressure?
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Undergrad Optical pumping vs Rabi cycle - what is the difference between their conditions?
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High School Huygens Question - Using a Pinhole Box in the Giant Pinhole Irvine
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Undergrad How different is a calcite crystal from a polarizer?
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Undergrad Reflection, refraction, and Snell's law
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Undergrad How Do Different Wavefront Shapes Appear to the Human Eye?
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Graduate Define the polarization in TE/TM modes
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High School Radio waves -- Tissue Refractive Index
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Undergrad Sine laws of spherical singlets
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Graduate Looking for trigonometric ray tracing software for optics
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Graduate Spherical aberration in Biconvex lens
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Graduate Calculating the optical depth of an inhomogeous gas
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Undergrad Sagnac Interferometer (Fiber Gyro)
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Undergrad Automatic double lens glasses?
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3
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Undergrad My spectacles defy the laws of physics
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Undergrad Tilted plane wave through a 2 lens system
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Graduate Stimulated emission/absorption - which equations act on external targets?
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High School Can sunglasses fully protect against UV sensitivity?
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High School Scattering of light by dust particles
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Undergrad Stimulated Emission & Emitted photon direction
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High School Why are light waves depicted as lines, circles, and sinusoids?
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High School How would one draw reflected wavefronts?
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High School Is this material is good for fiber optics and who would buy it?
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High School Scattering of light inside a room
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Graduate How is it possible to measure an IR LED source in mW/sr?
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Undergrad How to Measure Magnification of a Lens System with Liquid Surface
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Undergrad The Science Behind Rainbows: Explaining the Center of a Rainbow | Gooood Morning
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Undergrad Switching polarizer and analyzer: the order matters -- why?
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Graduate What exactly is deconvolution doing?
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Undergrad Questions About Bragg's Law of X-Ray Diffraction
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Undergrad 2mm x 2mm mirror array construction - can you help?
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Undergrad Optics: infinite light source illusion question - can you help?
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