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Mechanical Constants
This list of mechanical constants represent the most common values used in engineering, physics, and chemistry.
Visit NIST for all constants, units, and uncertainties.
This is their Extensive Listing of constants.
| Name | Symbol | Value |
| Horsepower | HP | 745.7 W |
| Atmosphere | Atm | 14.70 lb/in2 |
| Pi | P | 3.141 592 653 589 793 238 46 |
| Natural log base | e | 2.718 281 828 459 045 235 36 |
| Square root of 2 | √2 | 1.414 213 562 372 095 048 80 |
| Euler's constant | g | 0.577 215 664 901 532 860 61 |
| Golden Ratio | f | 1.618 033 988 749 894 848 20 |
| 1º of latitude at 40º latitude | 69 mi | |
| Acceleration of gravity | g | 32.1726 ft/s2 |
| Knot | kt | 1.1508 mi/hr |
| Speed of sound @ 0ºC | 1087.1 ft/s | |
| Water heat of fusion @ 0ºC | ∆Hfus | 79.71 cal/g |
| Water heat of vaporization @ 0ºC | ∆Hvap | 539.55 cal/g |
| Acre | 43 560 ft2 |
Copyright: 1996 - 2026 |
About RF Cafe RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a lady's voice announced "You've Got Mail" when a new message arrived... |
Copyright 1996 - 2026 All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledge My Hobby Website: My Daughter's Website: |
