New listing POST OFFICE - ALLENTOWN, PA POSTCARD. 1 2 3 4 5 6 7 8 9 10. eBay determines this price through a machine learned model of the product's sale prices within the last 90 days. eBay determines trending price through a machine learned model of the productâs sale prices within the last 90 days.
What's five times hotter than the sun and capable of sending a DeLorean back to the future? Yep, the answer is a bolt of lightning, which can reach temperatures of roughly 30,000 kelvins (53,540 degrees Fahrenheit). The sun, on the other hand, is eclipsed in this case - its surface temperature is just 6,000 kelvins (10,340 degrees Fahrenheit).
Most commonly, the lightning current ceases in about a millisecond for a given stroke, but sometimes there is a continuing current on the order of 100 amps following one or more of the strokes. This is called hot lightning and it is the cause of lightning fires according to Uman. The temperatures of lightning are 15,000-60,000Â°F for both cold and hot lightning-it is the continuing current that starts some 10,000 fires per year in the U.S. in the estimation of Uman.