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% whitewhite1144blueblue385redred650blackblack306 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 70% thermodynamic free energythermodynamic free energy361specific heat capacityspecific heat capacity469speed of lightspeed of light2495Coulomb, unit of the electric chargeCoulomb, unit of the electric charge207 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 67% superlighthousesuperlighthouse1268solar power plantsolar power plant5696tent-type greenhousetent-type greenhouse569a fountain in Dubaia fountain in Dubai968 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% SpriteSprite1686milkmilk1165tonic watertonic water4353pineapple juicepineapple juice1018 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% blueblue1879greengreen1057yellowyellow2434redred6368 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 people2738brown-eyed peoplebrown-eyed people706elderselders75there is no differencethere is no difference1265 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 painting6934phototypographyphototypography1029overexposureoverexposure1157painting on the lenspainting on the lens1517 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 seconds18951 minute1 minute8078 minutes8 minutes80991 hour1 hour858 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 stars522novaenovae235supernovaesupernovae2770quasarsquasars2368 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 these are often observed in distant galaxies.Created by: globalquiz.orgstars riddles »hard 52% ten typical starsten typical stars398one thousand typical starsone thousand typical stars950one million starsone million stars1827one hundred billion starsone hundred billion stars3530 Play technology quiz and see all the questions.