Hi, I'm doing a science project and I need to show how light bends. In my project, I am using a parabolic dish (a directTV satellite dish with a shiny reflective finish) to concentrate sunlight at the receiver. But, before the light gets to the receiver (the focal point), I want to re-bend the light (diverge) into parallel light again. I need to order a lens but I don't want to waste my money buying the wrong lens. My gut tells me I need a plano-convex lens but my brain says to ask for help. Can someone help me understand what lens I should use and why?
You can use a concave lens located between the dish and the focal point (to partially diverge the converging rays to parallel) or a convex lens located beyond the focal point (to partially converge the diverging rays to parallel).
You'll have to adjust the location of the lens to get good parallelism, and there may be a problem getting the entire output of the dish to fit into the lens circle.
Ordering a lens sounds potentially expensive. If you have a local store that sells office equipment or secretarial supplies you might find a fairly cheap magnifier (convex lens) of decent size there. However, if you decide on a concave lens you'll probably have to look elsewhere.
Piston Goggle, Black Frame, Smoked Reflective Lens.Ultimate accuracy is provided with this aerodynamic goggle that provides comfort and flair while functioning flawlessly. Frame ventilation prevents lens fogging while the shatter- resistant, polycarb
Bugeye Goggles, Black Frame, Smoked Reflective Lens.This extreme sport eyewear includes open cell sweat absorbing foam around the frame for ultimate protection. A vented, flexible plastic frame encloses polycarbonate lenses and is low profile enough
Polycarbonate Sealed Housing and Reflective Lens. Interior Wired with Single Wire Connection. 2 Screw Surface Mount without Disassembly. 12Volt .33 Amp 2.0 Candle Power. MultiFunction Light. Can be Used as Legal Clearance Marker Light when Mounted at a 45? Angle
John H. Stanfield II, the leading contemporary Black sociologist of knowledge, distills decades of his research and thinking in a set of articles—some original to the volume, others from fugitive sources—that address race in the formation of epistemologies, theories, and methodologies in social science. Stanfield’s contributions to the discipline, such as the adoption of restorative justice as an anti-racism solution in multiracial societies and the development of African diasporic sociological reasoning, are highlighted here. Ranging widely across theoretical, methodological, and substantive topics, Stanfield creates a reflective sociology viewed through an African diasporic lens that enriches the thinking and practice of social science.
John H. Stanfield II, the leading contemporary Black sociologist of knowledge, distills decades of his research and thinking in a set of articles—some original to the volume, others from fugitive sources—that address race in the formation of epistemologies, theories, and methodologies in social science. Stanfield’s contributions to the discipline, such as the adoption of restorative justice as an anti-racism solution in multiracial societies and the development of African diasporic sociological reasoning, are highlighted here. Ranging widely across theoretical, methodological, and substantive topics, Stanfield creates a reflective sociology viewed through an African diasporic lens that enriches the thinking and practice of social science.
" Aerodynamic goggles provide function, comfort and flair Rubber, matte black frames feature open-cell foam to cushion the face Adjustable strap and flexible frame material create a versatile fit Optically correct, shattt"
Zappos.com is proud to offer the Sabre Vision - Acid Rider (Black/White Tie Dye/Silver Reflective/Pink Lens) - Eyewear: Trippin' and shreddin' are one in the same with these Sabre Vision Acid Rider Goggles. ; Breathable anti-fog lens for crystal-clear vision. ; Reflective polarized lens for optimum performance. ; High quality ventilation system for ultimate optical clarity. ; Dual polycarbonate scratch-resistant lens. ; Thermo-polyurethane frame stays flexible and pliable in the coldest conditions. ; Ultra-soft, layered, breathable, hypoallergenic, compression-molded face foam. ; Offers UVA, UVB, and UVC protection. ; Extra lens included. ; Dimensions: Frame Width: 164mm. Lens: 74mm high x 85mm wide. Bridge: 26mm.
- Fashionable UV protection reflective sunglasses - Coated film on the surface so that it can reflect other's image but they can't see through your eyes - Protect your eyes from sand, wind and burning sun - Necessary fashionable personal adornment for yourself or friends - Perfect for outdoor activities, especially driving, bicycling, travel, fishing, climbing, etc - Comes with a box for package and protecting glasses from scratch, squeezing, broken, etc
- Fashionable UV protection reflective sunglasses - Coated film on the surface so that it can reflect other's image but they can't see through your eyes - Protect your eyes from sand, wind and burning sun - Necessary fashionable personal adornment for yourself or friends - Perfect for outdoor activities, especially driving, bicycling, travel, fishing, climbing, etc - Comes with a box for package and protecting glasses from scratch, squeezing, broken, etc
- Fashionable UV protection reflective sunglasses - Coated film on the surface so that it can reflect other's image but they can't see through your eyes - Protect your eyes from sand, wind and burning sun - Necessary fashionable personal adornment for yourself or friends - Perfect for outdoor activities, especially driving, bicycling, travel, fishing, climbing, etc - Comes with a box for package and protecting glasses from scratch, squeezing, broken, etc
Zappos.com is proud to offer the Sabre Vision - Lone Rider (Clear Blue Gel/Blue Reflective Bronze Lens) - Eyewear: Defy the odds and reach a state shredphoria by putting the powder to task with the Lone Rider from Sabre Vision. ; Breathable anti-fog lens for crystal-clear vision. ; Reflective polarized lens for optimum performance. ; High quality ventilation system for ultimate optical clarity. ; Dual polycarbonate scratch-resistant lens. ; Sabre Flexi Lens design bonds two lenses together with a locked zero air space to create an insulated thermal barrier that keeps the inner lens warm and dry. ; Thermo-polyurethane frame stays flexible and pliable in the coldest conditions. ; Ultra-soft, layered, breathable, hypoallergenic, compression-molded face foam. ; Offers 100% UVA, UVB, and UVC protection. ; Extra lens included. ; Frame Width: 170 mm ; Weight: 5 oz ; Lens Height: 75 mm ; Lens Width: 153 mm ; Bridge: 25 mm
Manufacturer: 3M. Each. Model 2000-AG Reflective Portable Overhead Projector Output 1600 lumens Lens Elements One Head Type Open Weight 14 lbs. Stage Size 10-1/2 x 10-1/2 Fold-Down Arm Size 13w x 19d x 21-1/2h Cord Length 10 ft. Manufacturer's Warranty On
Reflective Tape 4" X 50 Meter, 1 Unit Highly reflective, flexible, encapsulated lens material, pre-coated with a pressure-sensitive adhesive. SOLAS grade products do not readily stretch, attaching them to highly elastic materials could result in rips or tears. 3M recommends against attaching these products to highly elastic materials. Designed for nighttime visibility of life support equipment such as life rafts Daytime color: silver (with ship wheel logo); reflected color: white Highly reflective when totally wet, as well as when viewed at wide entrance angles SOLAS Grade 3150A sticks to smooth surfaces of fiberglass; rubber, vinyl and PVC films; aluminum; performance varies: test first If Grade 3150A does not meet your adhesion requirements, SOLAS Grade 3155 has a higher adhesion rating and will stick to a wider variety of substrates such as rough surfaces and many fabrics
Highly flexible black nylon frame, soft megol temple tips for improved comfort, silver metal piece, blocks 99 percent of UVA/UVB/UVC rays, ANSI z87.1 2003 compliant, ballistic MILPRF 31013 3.5.1.1 compliant, for use in safety and outdoor recreation applications.
The Traditional Lens (Grey) These lenses allow in 87% of visible light. Gray lenses transmit light evenly allowing the wearer to see colors as they naturally occur. All of our Polaroid lenses are made of optical grade plastic polarized lenses with a 7 layer back side anti reflective coating to reduce back side glare...
Are you tired of letting the glare of your computer bother you all the time and then wondering why your vision is getting worse and worse? The consistent glare from a computer monitor isn't exactly the healthiest thing for your eyes...
Ultra Clarity® is our lens and surface care brand for eyecare professionals and the choice of patients worldwide. It receives the highest ratings for cleaning effectiveness and safety in independent tests...
See Clear® effectively cleans without damaging most types of glass and plastic lenses. Pre-moistened, soft, non-linting wipe contains our unique formula: anti-static, anti-fog, safe for use on anti-reflective, UV and glare free coated lenses.
Ultra Clarity® is our lens and surface care brand for eyecare professionals and the choice of patients worldwide. It receives the highest ratings for cleaning effectiveness and safety in independent tests...
Protect your favorite gadgets with a screen protector! Guards against scratches, smears, dust and dirt, and keeps your LCD screen in perfect condition. This LCD Screen Protector provides a full coverage from dust and scratches...
Specification: Compatible with All Ipad Models High quality PET material giving you the best protection Scratch-proof Dust repelling Finger print free Bubble-free application Improves handwriting recognition Anti-reflectivePackage Include: 1pcs Screen Protector For Apple Ipad 1pcs cleaning cloth
The ultimate laser rangefinder for tournament play and avid golfers, the Bushnell Tour V2 rangefinder combines compact size with serious power, helping you figure out distances to the green within seconds...
These aviator sunglasses provide you with classic aviator styling while providing a unique lens treatment. These lenses are not mirrored and they are not classic smoke -- they are a reflective lens. You can see yourself in the lens when looking at the sunglasses, but you can also see through the lens...
In Greek mythology, Persephone is portrayed as the majestic queen of the shades. "It's All Good" Persephone sunglasses are certainly fit for a queen. Their sleek design and elegant metal frames feature a subtle curved lens...
This Green Laser Pointer comes in our beautiful Black Matte finish. Green lasers has so many uses: * Astronomers * Teachers * Students * Bird Watchers * Presentations * Tour Guides * Construction Workers * Scientific * Military * Security applications * Forensics Investigations * Play with pets (Dogs and Cats LOVE chasing the laser dot) Use to point out distant points of interest Imagine a bright beam of light that is visible from up to 2 miles away! It has a Class IIIa rating, this is the most powerful green laser allowed within the law...
Orion StarBlast 4.5 Astro Reflector TelescopeLaunch a lifetime of stargazing with this compact, ready-to-use telescopeTop-notch optics show you the moon, the planets, the stars and moreScope comes fully assembled so you can go from box to backyard in minutesHigh-quality optics, point-and-view ease of use, remarkable portability, all for less than $200Your ticket to space-tourism without the zero-G nauseaMaybe it's because many of us started out with those frustrating little department store refractors, but at Orion we strive to offer quality telescopes for beginners that are easy to use and will inspire their natural inclination to explore...
This listing is for an excellent Motocross Off Road ATV Dirt Bike Sport Style GoggleInclude: One dazzling colorful Reflection Lens GoggleSize: L 7 1/2" x 3 3/8" (19 cm x 8.5 cm)Lens Color: Reflective Blue-PurpleWeight:Appr 0...
The Auto lens repair kit will fix any typical broken tail light housing without removing the housing. The repair panel has a pre-formed grid pattern that closely matches the color and reflective qualities of the lens...
Make the ultimate teenage success guide part of your life every day Sean Covey's The 7 Habits of Highly Effective Teens has helped hundreds of thousands of teens find a path toward success and personal fulfilment...
P2 FRESNEL LENS PARABOLIC MIRROR APERTURE SOLAR FRESNEL POWER CPV
Anit reflective glasses lens coating..?
I'm getting new glasses and im getting the anti reflective lens coating on it so light doesn't show on the lens.
But im wondering if when i go on my webcam, will the light from the computer screen reflect still or no, since i'll have the coating on them?
No it will not. I have had anti reflective and even though some things can reflect (if your sitting by a window and looking in a mirror you can see the green outline of the blinds on your lenses, it tints green from the coating). The computer screen is not going to cause glare on your glasses.
