Difference between revisions of "B.C."
Jump to navigation
Jump to search
(Undo revision 748023 by Anoninside (Talk)) |
|||
| Line 1: | Line 1: | ||
'''B.C.''' literally means "before Christ" and is the dating mechanism used for older dates in human history. However, due to a miscalculation, the calendar start time does not correspond to the exact year of [[Jesus]]' birth, which actually occurred a few years earlier. | '''B.C.''' literally means "before Christ" and is the dating mechanism used for older dates in human history. However, due to a miscalculation, the calendar start time does not correspond to the exact year of [[Jesus]]' birth, which actually occurred a few years earlier. | ||
| + | ==Firearms== | ||
| + | * In [[Glossary of Firearms and Second Amendment Terms|firearms terminology]], B.C. refers to [[ballistic coefficient]]. According to [[:Category:Gun Writers|gun writer]] Matthew Boyd, ballistic coefficient is "the [[ratio]] of a [[bullet]]'s [[sectional density]] to its [[coefficient]] of form. BC represents how efficiently the bullet flies through the air; the higher the BC number the more [[aerodynamic]] the bullet."<ref>Boyd, Matthew J., "[http://www.chuckhawks.com/firearms_terminology.htm Basic Firearms Terminology Defined]." [[Guns and Shooting Online]] - [[Chuck Hawks]].com, 2012. Accessed February 19, 2015</ref> | ||
| Line 7: | Line 9: | ||
*[[Anno Mundi]] | *[[Anno Mundi]] | ||
| − | [[Category:Dating Systems]] | + | [[Category : Dating Systems]] |
| + | [[Category : Firearms Glossary]] | ||
| + | [[Category : Ammunition]] | ||
Revision as of 06:22, February 20, 2015
B.C. literally means "before Christ" and is the dating mechanism used for older dates in human history. However, due to a miscalculation, the calendar start time does not correspond to the exact year of Jesus' birth, which actually occurred a few years earlier.
Firearms
- In firearms terminology, B.C. refers to ballistic coefficient. According to gun writer Matthew Boyd, ballistic coefficient is "the ratio of a bullet's sectional density to its coefficient of form. BC represents how efficiently the bullet flies through the air; the higher the BC number the more aerodynamic the bullet."[1]
See Also
- ↑ Boyd, Matthew J., "Basic Firearms Terminology Defined." Guns and Shooting Online - Chuck Hawks.com, 2012. Accessed February 19, 2015