A parabolic (or paraboloid or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such as light, sound, or radio waves. Its shape is part of a circular paraboloid, that is, the surface generated by a parabola revolving around its axis. The parabolic reflector transforms an incoming plane wave travelling along the axis into a spherical wave converging toward the focus. Conversely, a spherical wave generated by a point source placed in the focus is reflected into a plane wave propagating as a collimated beam along the axis. Parabolic reflectors are used to collect energy from a distant source (for example sound waves or incoming star light). Since the principles of reflection are reversible, parabolic reflectors can also be used to collimate radiation from an isotropic source into a parallel beam. In optics, parabolic mirrors are used to gather light in reflecting telescopes and solar furnaces, and project a beam of light in flashlights, searchlights, stage spotlights, and car headlights. In radio, parabolic antennas are used to radiate a narrow beam of radio waves for point-to-point communications in satellite dishes and microwave relay stations, and to locate aircraft, ships, and vehicles in radar sets. In acoustics, parabolic microphones are used to record faraway sounds such as bird calls, in sports reporting, and to eavesdrop on private conversations in espionage and law enforcement. (Wikipedia).
PARABOLIC DISH MIRROR REFLECTOR SPHERICAL SUN PARABOLIC SOLAR COOKER REFLECTIVE ALUMINUM
http://www.greenpowerscience.com/ This is a video demonstrating the 24" paraboloid which is roughly a 75% mirror vs. a spherical shape with a 95% mirror lining.
From playlist NEW VIDEOS
HUGE PARABOLIC MIRROR SOLAR POWERED SUN COLLECTOR solar energy
http://www.greenpowerscience.com/ I just got this and will be doing a real video soon. This is just to show it off. It is really cool! No audio on this one. Just a quick preview of a video to come.
From playlist PARABOLIC MIRROR CONCAVE SOLAR REFLECTOR
Physics 11.1.3b - Parabolic Reflectors
Parabolic reflectors
From playlist Physics - Reflection and Refraction
PARABOLIC MIRROR PARABOLOID HOMEMADE SOLAR CONCENTRATOR P2 DIY DO IT YOURSELF
Making your own parabolic mirror solar reflector for solar cooking is easy if you use our strip method. Do not skimp on reflective film. Use a real solar product for optimal results. http://greenpowerscience.com/SHOPREFLECTIVEBUY.html THIS IS PART 2 OF THE PARABOLIC MIRROR
From playlist PARABOLIC MIRROR CONCAVE SOLAR REFLECTOR
Solar Parabolic Mirror Direct TV Dish Satellite Concave Mirror
http://www.greenpowerscience.com/ Follow up Direct TV Satellite dish conversion to solar. This is another option to the adhesive material. It takes some time but the results are promising for a Solar Parabolic Reflector. http://www.greenpowerscience.com/SHOPREFLECTIVEBUY.html http:/
From playlist PARABOLIC MIRROR CONCAVE SOLAR REFLECTOR
PARABOLIC MIRROR SOLAR COLLECTOR SQUARE PARABOLOID FREE GREEN ENERGY
http://www.greenpowerscience.com/ This is a large fiberglass parabolic shape made out of fiberglass. It is very powerful and has the part A mirror 80%. I will be adding the Part B to jack it up to 95%. The focal point is longer and takes a bit getting used to, especially getting in the
From playlist PARABOLIC MIRROR CONCAVE SOLAR REFLECTOR
A wave traveling between parabolic reflectors, in 3D
This 3D remake of the video https://youtu.be/v0cZjOIfwos shows the working of parabolic reflectors, also known as parabolic antennae, or satellite dishes. Let's say the left reflector has number 1, while the right one has number 2. At the beginning of the simulation, a circular wave is emi
From playlist Wave equation
DIY SATELLITE DISH to Huge Parabolic Mirror Solar Cooker Reflective Film SOLAR
DIY parabolic mirror from a satellite dish to parabolic to a solar cookers using reflective film. This method is much easier than pie shapes and produces 2X the power of DISCO BALL type glue mirrors.
From playlist PARABOLIC MIRROR CONCAVE SOLAR REFLECTOR
Solar Death Ray 10,000 suns 48" DIY Giant Archimedes Parabolic Mirror Reflector
This solar ray of Archimedes styled death is how he would have use dthe power of the sun for solar thermal applications Low cost solar cooker. Homemade DIY solar parabolic death ray mirror for solar cooking. This is similar to the parabolic heat cooker I made a few years ago. http://green
From playlist MIRRORS Solar Optical
View-Master Projector: Equipment Autopsy #60
http://www.thegeekgroup.org - Chris pries apart an old projector made especially for View-Master slides. Inside he finds reflectors, lenses, and a few other interesting goodies. Subscribe for more High Voltage, Equipment Autopsies, science videos and general geek related awesomeness. Bas
From playlist Equipment Autopsies
Physics 11.1.3a - Spherical and Parabolic Mirrors
Spherical and Parabolic mirrors. From the Physics course by Derek Owens. The distance learning class is available at www.derekowens.com
From playlist Physics - Reflection and Refraction
Solar "Death Ray" PARABOLIC DISH MIRROR PARABOLOID HOMEMADE DIY REFLECTOR RENEWABLE ENERGY
Make your own homemade SOLAR DEATH RAY parabolic mirror out of fiberglass with adhesive reflective material. http://greenpowerscience.com/SHOPREFLECTIVEBUY.html http://www.greenpowerscience.com/
From playlist PARABOLIC MIRROR CONCAVE SOLAR REFLECTOR
The Lunar Crater Radio Telescope with Dr. Ashish Goel
Dr. Ashish Goel is a Research Technologist at the NASA Jet Propulsion Laboratory in the Robotic Surface Mobility group. He has helped develop the plans to build a giant radio telescope inside a crater on the Moon, providing a pristine view to the Universe, using the Moon to block Earth's r
From playlist Interviews
HSC Harder Parametrics Question (2 of 2: Breaking down the Question and Solving)
More resources available at www.misterwootube.com
From playlist Further Work with Functions
Radiolocation Issue Title Right Turn (1941)
Part of RIGHT TURN issue. Filmed in a variety of locations. First sequence shows actors performing scenarios about the 5 senses: Various shots of man looking at newspaper with magnifying glass. Various shots of man reaching under chest of drawers. He catches his finger in trap
From playlist Great British Inventions
PART 2 PARABOLIC TROUGH DIY reflective mirror HUGE SOLAR REFLECTOR
Parabolic Trough Mirror GreenPowerScience This is Part 2, I will have all the measurements on our website.
From playlist PARABOLIC MIRROR CONCAVE SOLAR REFLECTOR
Parabolic mirrors and real images | Geometric optics | Physics | Khan Academy
Parabolic Mirrors and Real Images. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/science/physics/geometric-optics/mirrors-and-lenses/v/parabolic-mirrors-2?utm_source=YT&utm_medium=Desc&utm_campaign=physics Missed the previous lesson? https://www.khanacademy.org/
From playlist Geometric optics | Physics | Khan Academy