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  1. 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 …

  2. 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 …

  3. 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, …

  4. What caused the mysterious flash of light during 9/11 plane strikes?

    Mar 13, 2006 · The discussion centers on the mysterious flash of light observed during the 9/11 plane strikes on the World Trade Center. Some participants speculate that the flash could be …

  5. 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 …

  6. 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 …

  7. How Does a Grenade's Shockwave Cause Fatal Injuries?

    Oct 6, 2008 · A grenade's shockwave can cause fatal injuries by delivering a high-speed blast of compressed air that damages the body similarly to a vehicle collision, despite having less …

  8. Relativity Question with Lorentz tranformations - Physics Forums

    Sep 24, 2007 · 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 …

  9. Flashing In And Out of Existence? • Physics Forums

    Apr 17, 2016 · Quote: "And because reality is flashing in and out of existence (hypothetically at Planck time – 1044 times per second – as explained to me by The Resonance Project …

  10. Why N-Butane & Isobutane Have Different Autoignition & Flash …

    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 …