1) What is a mineral? A mineral is a naturally occurring inorganic crystalline substance, whose compositions are either fixed or vary between certain fixed limits. This excludes, for example, artificial diamonds, coal, volcanic glass. What makes each mineral unique is a combination of its chemical composition and the internal arrangement of its constituent atoms. The
The universe is the biggest and oldest thing we know. It contains all existing matter and space. And its origin marks the beginning of time as far as we understand it. We don’t know what made the formation of the universe possible, nor why it occurred. The visible universe is currently about 93
Venus and the Triple Ultraviolet Sun Image Credit: NASA/SDO & the AIA, EVE, and HMI teams; Digital Composition: Peter L. Dove (http://www.flickr.com/photos/pldove/) Explanation: An unusual type of solar eclipse occurred in 2012. Usually, it is the Earth's Moon that eclipses the Sun. That year, most unusually, the planet Venus took a turn. Like a solar
Physical Properties of the Earth The Earth is an oblate spheroid, being slightly flattened at the poles: Equatorial radius = 6378 km Polar radius = 6357 km These measurements are calculated on the assumption that the Earth's surface is smooth, but this is only an approximation since it disregards mountains and ocean depths. However, the difference between
https://www.youtube.com/embed/K12JGiYHcTw?version=3&rel=1&fs=1&autohide=2&showsearch=0&showinfo=1&iv_load_policy=1&wmode=transparent By Joe Pickett, OCW Publication Director OCW has just published 21G.503 Japanese III, the third in a four-course sequence on Japanese taught at MIT. With relatively few Japanese speakers on the MIT campus, the instructors must make the most of what happens in the classroom and motivate students to work hard outside it.
New video by Kurzgesagt – In a Nutshell. Sharing this as it's very interesting for all to know :) The first 688 people to use this link will get 20% off their annual membership: http://brilliant.org/nutshell Finding alien life on a distant planet would be amazing news - or would it? If we are not the only
This is based on one of the lectures of Richard Feynman (1918–1988), a theoretical physicist and Nobel Prize winner, describing the process by which theory and practical studies are used together to make scientific discoveries. In general, we look for a new law by the following process: First, we guess it. Then we compute the
League of Legends Live: A Concert Experience at 2017 Worlds Countdown https://clips.twitch.tv/embed?clip=AverageStormyOilBlargNaut&autoplay=false&tt_medium=clips_embed