This picture shows the size of a sphere that would contain all of Earth's water in comparison to the size of the Earth. The blue sphere sitting on the United States, reaching from about Salt Lake City, Utah to Topeka, Kansas, has a diameter of about 860 miles (about 1,385 kilometers) , with a volume of about 332,500,000 cubic miles (1,386,000,000 cubic kilometers).
This is the first in a sequence of two artist's impressions that shows a huge, massive sphere in the center of a galaxy, rather than a supermassive black hole. Here a star moves towards and then smashes into the hard surface of the sphere, flinging out debris. The impact heats up the site of the collision. Image: Mark A. Garlick/CfA
finger-ring / armillary sphere: Sphere-ring; gold; formed of an outer hoop in two parts, interior three hoops almost concealed when ring closed; Inscription Content VERBO DEI CELI FIRMATI SUNT 1555 DIXIT ET FACTA SUNT IPSE MANDAVIT ET CREATA SUNT [exterior hoop] exterior hoop chased with scrolls on ground once enamelled black, each part has on flat surfaces concealed when ring closed a section of enamelled inscription; three interior hoops plain flat bands engraved and enamelled in black…
Wavellite, Lichtenberg open cast, Ronneburg, Gera, Thuringia, Germany, Miniature, 4.1 x 3.4 x 2.5 cm, SUPERB, virtually complete, Wavellite miniature from Germany., For sale from The Arkenstone, www.iRocks.com. For more details on this piece and others, visit http://www.irocks.com/minerals/specimen/46136
Michael Freedman proves Poincaré conjecture in dimensions equal to 4.| Richard Hamilton's program started in his 1982 paper introduced the Ricci flow on a manifold showed how to use to prove some special cases of Poincaré conjecture. For compact 2-dimensional surfaces without boundary, if every loop can be continuously tightened to a point, then surface is topologically homeomorphic to 2-sphere. Poincaré conjecture, proved by Grigori Perelman, asserts the same is true for 3-dimensional…
Fill the balloon with water . This image illustrates why you don't completely fill the balloon you should always leave some room in the neck of the balloon, then as the form dries the pressure has somewhere to go and your clay wont split like that.
Surface Area and Volume Formulas for Geometric Shapes
Students love this project! They take everyday objects and create a 3D model including a pyramid, cylinder, sphere, cone and prism. The then calculate the surface area and volume of each shape to demonstrate their understanding of formulas.