Light questions This is a list of recently added questions about light. Play light quiz and see all the questions. Which color has the greatest albedo?White. Albedo in Latin is simply "whiteness". It is the reflecting power of a surface - the ratio of reflected radiation from the surface to incident radiation upon it.Created by: Paweł KołodziejczykLatin riddles »hard 46% whitewhite1318blueblue436redred728blackblack355 What is "c" in E=mc^2?Speed of light. In words, energy equals mass multiplied by the speed of light squared.Created by: Paweł Kołodziejczykdiscoverers riddles »easy 71% thermodynamic free energythermodynamic free energy399specific heat capacityspecific heat capacity517speed of lightspeed of light2814Coulomb, unit of the electric chargeCoulomb, unit of the electric charge233 What kind of building is that?Solar power plant. In The PS10 Solar Power Plant, 624 movable mirrors concentrate the sun's rays to the top of a 115 meter (377 ft) high, tower where a steam turbine is located. The plant is located near Seville, Spain.Created by: globalquiz.orgelectricity riddles »average 66% superlighthousesuperlighthouse1364solar power plantsolar power plant5995tent-type greenhousetent-type greenhouse598a fountain in Dubaia fountain in Dubai1030 Which beverage is is fluorescent in UV light?Tonic water is transparent in daylight. Under ultraviolet light, the quinine makes it fluorescent (pictured), even though it is present in a negligible concentration.Created by: Luca Biaggibeverages riddles »hard 52% SpriteSprite1790milkmilk1213tonic watertonic water4565pineapple juicepineapple juice1064 The rainbow is violet on the inside of its arc. What color is it on the outside?Red. Visible light spans from red to violet. It is easy to remember, since wavelengths just outside the visible range are called infrared and ultraviolet.Created by: Hà Linh Chioptics riddles »hard 54% blueblue1969greengreen1093yellowyellow2537redred6729 Who should you expect to show stronger red-eye effect?Blue-eyed people. The iris plays no role in the effect, but the blue-eyed people have relatively low melanin in the fundus as well. Therefore, they show a much stronger red-eye effect, as the light passing fundus is not absorbed by melanin. The role of melanin in red-eye effect is nicely demonstrated in case of heterochromia (one eye blue, one brown): typically, only the blue eye displays the effect.Created by: Kantapat Rassameeeyes riddles »hard 57% blue-eyed peopleblue-eyed people2874brown-eyed peoplebrown-eyed people751elderselders77there is no differencethere is no difference1335 What photographic technique was used to create this photo?Light painting. The photo was taken with long exposure. For the first 15 seconds, the author hold still with lights on, to achieve the light in background. Later, he switched off the light and wrote his name with light in his hand. He used his nose as a reference point so he could close the "O" letter - which explains the flare at this position.Created by: globalquiz.orgphotography riddles »average 65% light paintinglight painting7421phototypographyphototypography1090overexposureoverexposure1214painting on the lenspainting on the lens1616 How long does it take the sunlight to reach the Earth?8 minutes. The distance from Earth to the Moon is 1.2 light seconds. The distance to the nearest star (Proxima Centauri) is 5.46 years.Created by: Hitter smasherSun riddles »average 69% 3 seconds3 seconds20121 minute1 minute8548 minutes8 minutes86131 hour1 hour917 What are the most luminous objects in the universe?Quasars. A quasar is an extremely energetic source of radiation powered by accretion disc around galaxy's central supermassive black hole. Quasars were much more common in the early universe, as all known quasars are extremely distant.Created by: globalquiz.orgspace riddles »hard 40% supergiant starssupergiant stars556novaenovae256supernovaesupernovae2946quasarsquasars2561 How many typical stars can supernova be luminous as?One hundred billion stars. Supernovae are extremely luminous and often briefly outshine an entire galaxy. No supernova has been observed in the Milky Way since 1604, but they are often observed in distant galaxies.Created by: globalquiz.orgstars riddles »hard 52% ten typical starsten typical stars421one thousand typical starsone thousand typical stars1006one million starsone million stars1969one hundred billion starsone hundred billion stars3758 Play technology quiz and see all the questions.