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How to calculate flash point of mixture? - Physics Forums However, if you Google something like "Effect of Additives on the Flash Point of Flammable Liquid" you will find that you can begin by adding water to the alcohol to raise its flash point (for example, a mixture of 7 water 3 methanol seems to raise the flash point by 25 degrees C) You would then add this mixture to the petroleum
Jet Fuel, JP-5, JP-8 DFM: Properties, Chemical Composition . . . They contain hundreds of hydrocarbons as well as many additives The actual composition of any given fuel varies depending upon source of the crude oil, refinery processes, and product specifications The hydrocarbons in jet and diesel fuels are less volatile than those in gasoline JP-5 is a high-flash-point jet fuel developed by the Navy
Unexplained bright flash of light inside house - Physics Forums From the video, the initial flash was very short, showing up at full brightness only for two frames (although it was preceded by a couple of frames showing a partial flash) Frames seem to be 30 per second, so that makes the flash duration between a 30th and a 10th of a second (You can use comma and period on the keyboard to step back or forward)
Strange white flash in a dark room - II - Physics Forums Even comparatively dim flashes could appear bright when your eyes are in that situation Even though the flash itself might only last a tiny fraction of a second, the image sensed by your retina (which can include the walls floor ceiling -- anything lit by the flash) might last at least a little longer than that, just due to the way the eyes work
Closed - Calguns. net There are currently 2563 users online 27 members and 2536 guests Most users ever online was 65,177 at 7:20 PM on 09-21-2024
Debunking the Myth: Do LED Lights Flicker? Get the . . . - Physics Forums Many LED bulbs produce flicker - a rapid switching between on and off states Because the flickering happens at a very fast rate - typically 120 times per second or faster - it is not immediately observable to humans and appears to us as a light bulb of steady and constant brightness
Relativity Question with Lorentz tranformations - Physics Forums Homework Statement Observer O sees a red flash of light at the origin at t=0 and a blue flash of light at x = 3 26km at a time t = 7 63 \\mu seconds What are the distance and the time interval between the flasheds according to ovserver O', who moes relative to O in the direction of
Removing the flash hider from the C93 (HK93 clone) So, just got around to doing this article and felt the need to post it here It's on how to remove the flash hider from the muzzle of Century Arms' C93 rifle, although it should work for most HK-9x pattern rifles Before: After:
PTR 91 Flash hider removal. - Calguns. net Nevermind I didn't know it would be so easy I just wrapped the flash hider with the finger of a leather glove and lightly clamped a vice grip on it with just a little effort it just came right off Now to decide on a muzzle brake as I nueter my PTR 91 for the PDR of C
How Does a Grenades Shockwave Cause Fatal Injuries? - Physics Forums 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 shock wave can actually knock a person down, but the chances of being killed by one, even at close proximity, are very slim