Unexplained bright flash of light inside house - Physics Forums
Dec 31, 2022 · The first flash was so bright it immediately woke me up. I thought somebody just shined a bright flash light in my face from inches away. The second flash 5 seconds later, I was fully awake …
How to calculate flash point of mixture? • Physics Forums
Jun 7, 2012 · To achieve a target flash point of around 70ºF for a mixture of isopropyl alcohol and aliphatic hydrocarbons, a precise calculation based on thermodynamics is necessary. Adding water …
What caused the mysterious flash of light during 9/11 plane strikes?
Mar 13, 2006 · Tapes of the planes hitting the WTC towers clearly show a flash of light just as the nose of the plane touches the side of the building. Four views of the second strike, and the one and only …
How Does a Grenade's Shockwave Cause Fatal Injuries?
Oct 6, 2008 · Stun grenades, or "flash bang" grenades, operate on this principle. They produce a large blast but almost no shrapnel. The noise and brightness of the flash are very disorienting, and the …
Strange white flash in a dark room - II - Physics Forums
Sep 23, 2010 · The flash is just as bright as sunlight at daytime. The room (kitchen) is in the second floor and is in connection to the living room. The room has a new kitchen now, but when it happened this …
Jet Fuel, JP-5, JP-8 & DFM: Properties, Chemical Composition ...
Aug 12, 2006 · The discussion focuses on the properties and chemical compositions of various jet fuels, specifically JP-5, JP-8, and JP-10, highlighting their hydrocarbon mixtures and energy content. JP-9 …
Flash Point of Petrol & Diesel: Pressure & Self Ignition
Aug 13, 2018 · The discussion focuses on the differences in flash points, boiling points, and self-ignition temperatures of petrol and diesel under varying pressures. Petrol has a lower flash point than diesel, …
Camera Flash Circuit Explanation - Physics Forums
Jul 22, 2012 · The discussion focuses on the operation of a camera flash circuit, particularly the behavior of the transistor within it. Participants explore why the transistor enters cutoff mode, with one …
Why N-Butane & Isobutane Have Different Autoignition & Flash Points
Aug 22, 2012 · The discussion centers on the differing thermal properties of n-butane and isobutane, specifically their autoignition temperatures and flash points. N-butane has a lower autoignition …
How many electrons are involved in a lightning flash
Aug 28, 2005 · A typical lightning flash delivers about 35 coulombs of negative charge from cloud to ground. To determine the number of electrons involved, the charge of a single electron, …