Transcript of What Would Happen If Gravity Stopped Working?
Food and drink would be floating everywhere. We would have to change our clothing. Oxygen will disperse into space. There would be no carbon dioxide. We will suffocate. One way to keep the oxygen in would be to build a massive dome around earth. We would have to drink from tubes. The only way to eat at a table would be to strap yourself to a chair or use magnets. We would need magnetised boots and the streets would need to be rebuilt with metal. We would need to sleep strapped to something to avoid injury. Toilets would need to have a vacuum. What Would Happen If Gravity Stopped Working? We would have to eat processed food. Astrophysics is one of the parts of Astronomy that deals with the physics of the universe. In Greek, astro means "star" and physis means "nature". Some of the objects studied in astrophysics are galaxies, stars, planets and exoplanets. The properties that are examined include luminosity, temperature and density. Astrophysics The absolute magnitude of a star is a simple way of describing its luminosity. Luminosity, L, is a measure of the total amount of energy radiated by a star or other celestial object per second. This is therefore the power output of a star. A star's power output across all wavelengths is called its bolometric luminosity. Astronomers in practice also measure an object's luminosity in specific wavebands so that we can discuss an object's X-ray or visible luminosities Temperature Luminosity In astrophysics, stars are classified by their surface temperature, that is associated to specific spectral patterns. An early schema from the 19th century ranked stars from A to P, which is the origin of the currently used spectral classes. After several transformations, today the spectral classification includes 7 main types: O, B, A, F, G, K, M.Full transcript
A popular mnemonic for remembering this order is "Oh, Be A Fine Girl, Kiss Me". Density Density is a physical property of matter, as each element and compound has a unique density associated with it. Density defined in a qualitative manner as the measure of the relative "heaviness" of objects with a constant volume.
For example: A rock is obviously more dense than a crumpled piece of paper of the same size.
A styrofoam cup is less dense than a ceramic cup.
Density may also refer to how closely "packed" or "crowded" the material appears to be