High Voltage
Previous Next
+ Comments High Voltage - 2007-08-19 11:04:05
The lightning storm outside our building last night. After the storm, I read up on good techniques to capture it easier (longer exposure, 100 ISO film speed for picture quality, tripod, ...) so next time I'll be ready!
A bolt of lightning can travel at a speed of 45 km/s (100,000 mph, 160,000 km/h). It can reach temperatures approaching 28,000 C (50,000 F), hot enough to fuse soil or sand into glass channels... Some bolts [transfer] enough energy to power a 100 watt lightbulb for just under two months. The voltage... works out at about one billion volts for a 300m lightning bolt. On average, lightning strikes the earth about 100 times every second.... The Empire State Building is struck by lightning on average 23 times each year, and was once struck 8 times in 24 minutes.... Roy Sullivan held a Guinness World Record after surviving 7 different lightning strikes across 35 years. -Wikipedia