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How to calculate flash point of mixture? • Physics Forums The flash point of isopropyl alcohol is 53ºF, while the petroleum mixture has a flash point of 142ºF A suggested approach involves adding water to the alcohol to raise its flash point and then combining this mixture with the petroleum
Flash Point of Petrol Diesel: Pressure Self Ignition The flash point of petrol is lower than that of diesel, indicating that petrol vaporizes and can sustain combustion at lower temperatures However, diesel can self-ignite at higher pressures, which is crucial in engine operation
Why N-Butane Isobutane Have Different Autoignition Flash Points The flash point of n-butane is -60 degree Celsius while that of isobutane is -83 degree celsius I was confused by these Why does n-butane have a higher flash point but a lower autoignition temperature?
Camera Flash Circuit Explanation - Physics Forums Investigate the design and operation of camera flash circuits Electronics enthusiasts, circuit designers, and students studying electrical engineering who are interested in understanding the intricacies of camera flash circuits and the behavior of transistors within them
How Does a Grenades Shockwave Cause Fatal Injuries? The discussion focuses on the mechanics of how a grenade's shockwave causes fatal injuries, emphasizing that the shockwave, a wave of compressed air, can inflict severe damage similar to being struck by a fast-moving vehicle It highlights that grenades are more lethal when detonated underwater due to the shockwave being transmitted through water, which is denser than air, thereby increasing
Optimizing Camera Flash Performance: The Role of RC Circuits The discussion focuses on optimizing camera flash performance through the analysis of an RC circuit involving a light bulb and a capacitor The governing differential equation derived is 0 = R*di dt + i (t) C, with a specific resistance of Rlight = 5 ohms To achieve a quick discharge of the capacitor, it was determined that R should be set to 85 2 ohms to ensure the current falls to half its
Why do Lifesavers no longer produce a blue flash, but Altoids still do? The discussion centers on the phenomenon of triboluminescence observed in wintergreen Lifesavers and Altoids Participants noted that while wintergreen Lifesavers no longer produce a blue flash when crushed, Altoids still do The potential cause for this change is attributed to the use of corn syrup as a sweetener in Lifesavers and the difference in flavoring agents, with Lifesavers listing
The Interaction of Sound and Light - Physics Forums Sonoluminescence, from the Latin for sound and light, is a phenomenon that involves a collapsing bubble emitting a flash of light I used to be a bubble scientist so this is one of my favorite effects; I have written about it before on PhysicsForums and on my blog
Jet Fuel, JP-5, JP-8 DFM: Properties, Chemical Composition . . . The discussion focuses on the properties, chemical composition, and toxicokinetics of various jet fuels, specifically JP-5, JP-8, and JP-10 JP-5 is a high-flash-point jet fuel with a specific composition of C9-C16 paraffins, while JP-8 is similar to Jet A-1 fuel, with a freezing point of -47°C and a minimum heating value of 18,400 Btu lb JP-10, a specialty fuel, has a minimum volumetric
Find Capacitance for Camera Flash Unit • Physics Forums The discussion focuses on calculating the capacitance of a capacitor in a camera flash unit, where the circuit steps up the voltage from 3 1 V to 300 V The average power dissipated in the flashlamp is 12 W, and the discharge time is 12 μs The correct formula derived is C = 2Pt (V'² - V²), leading to a capacitance value of 3 2 x 10 -9 F The confusion arises from the interpretation of