         Introduction Astronomy Tools Concepts 1. Electromagnetic Spectrum 2. Atmosphere Limitations 3. Space Observations Equipment 1. Telescopes 2. Radio 3. Space Tools 4. Photography 5. Spectroscopy 6. Computers 7. Advanced Methods 8. Radio Astronomy Basic Mathematics Algebra Statistics Geometry Scientific Notation Log Scales Calculus Physics Concepts - Basic Units of Measure - Mass & Density - Temperature - Velocity & Acceleration - Force, Pressure & Energy - Atoms - Quantum Physics - Nature of Light Formulas - Brightness - Cepheid Rulers - Distance - Doppler Shift - Frequency & Wavelength - Hubble's Law - Inverse Square Law - Kinetic Energy - Luminosity - Magnitudes - Convert Mass to Energy - Kepler & Newton - Orbits - Parallax - Planck's Law - Relativistic Redshift - Relativity - Schwarzschild Radius - Synodic & Sidereal Periods - Sidereal Time - Small Angle Formula - Stellar Properties - Stephan-Boltzmann Law - Telescope Related - Temperature - Tidal Forces - Wien's Law Constants Computer Models Additional Resources 1. Advanced Topics 2. Guest Contributions Basic Mathematics - Scientific Notation Scientific Notation and Powers of Ten go hand in hand. Powers of Ten: When adding, dividing, or multiplying "10's," its a simple manner of remembering the zeros. For example: Carry the one over, and add the zeros in a row. When dealing with powers, that is some number raised to some number, that number is multiplied by itself: When multiplying to ten-power values, all that is needed is to add the powers: Any negative ten-power number is equal to one over that number: When dividing ten-power numbers, all that is needed is to subtract the powers: Back to Top Scientific Notation: Scientific notation is the process of simplifying very large numbers. Image a value: 1,000,000,000,000,000,000,000,000 Or this: 1,000,000,000,000,000,000,000 x 1,000,000,000,000,000 Such large numbers will make it easier to forget a zero. I don't know about you, but when I see so many zero's the value begins to look blurry! This is the reason for using Scientific Notation: 1,000,000,000,000,000,000,000,000 = 1.0 x 1023 And when you are multiplying or dividing the values, the rules for powers or ten apply. Back to Top      Search | Site Map | Buy Stuff - Store | Appendix ©2004 - 2020 Astronomy Online. All rights reserved. Contact Us. Legal. The works within is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.