Top 10 light facts Selected as the most interesting among technology related questions in Technology quiz 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 facts » 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 facts » 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.orguniverse facts » 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 facts » 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 facts » 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 facts » 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 facts » 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 facts » 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 facts » 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 facts » Play technology quiz and see all the questions.