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The first scientific description of the crown flash phenomenon appears to be in the journal Monthly Weather Review in 1885, [4] according to the Guinness Book of Records. [5] Also mentioned in Nature in 1971 [ 6 ] and in a letter to Nature slightly earlier in the same year, [ 7 ] this phenomenon is regarded as uncommon and not well documented.
Brett Porter, [5] a wildlife ranger, reported taking a photo in Queensland, Australia in 1987. Bead lightning, also known by the terms pearl lightning, chain lightning, perlschnurblitz, éclair en chapelet and others, [6] is the decaying stage of a lightning channel in which the luminosity of the channel breaks up into segments. [7]
For handgun cartridges, with heavy bullets and light powder charges (a 9×19mm, for example, might use 5 grains (320 mg) of powder, and a 115 grains (7.5 g) bullet), the powder recoil is not a significant force; for a rifle cartridge (a .22-250 Remington, using 40 grains (2.6 g) of powder and a 40 grains (2.6 g) bullet), the powder can be the ...
The number of lightning-related deaths has decreased in recent years, with campaigns like Lighting Safety Awareness Week teaching people important safety tips. John Jensenius, the creator of ...
Here are three important tips on lightning safety he shared during an appearance on AccuWeather Prime. "When thunder roars, go indoors" is more than just a catchy slogan; it is great advice.
[4] [5] Bullet shape and weight, trying to achieve the highest possible ballistic coefficient ("BC") [6] Air pressure, altitude and (to a certain degree) humidity [7] Temperature (including air, ammunition and barrel temperature) [8] Spindrift, [9] an effect caused by the rotation of the bullet; Coriolis effect, [10] caused by the Earth's rotation
Bullets of the same mass that have similar-shaped meplats will travel through the air in nearly identical fashion, making it easier to group shots together or hit a target multiple times. For this reason, competitive shooters and snipers often trim or point their meplats to uniform shape.
TAMPA — It may seem like just yesterday that the Lightning won their second straight Stanley Cup on home ice at Amalie Arena, but Thursday marks the first day of training camp as Tampa Bay ...