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  1. H

    Gas Problem Dealing with Explosives

    Sorry for not returning as i promised. I was out of town for a construction job. I am back for a while. I took a long look at those two analysis i posted earlier. I agree with Pervect. They are backdoor-ish. Almost misinformation. They both throw jargon around and then go through a laborious...
  2. H

    Gas Problem Dealing with Explosives

    Pervect, Danger, and all, I am going to have to work through the ideal gas law and adiabatic process. I have never dealt with gases before. I will be back in a few days. Hank
  3. H

    Gas Problem Dealing with Explosives

    Bursting Heat seems to be a known term, makes sense that there would be a bursting pressure. When the explosive reaction starts- like popcorn- bursting heat is reached near-instantaneously. A "bursting pressure" must also exist because of the gas and high heat generated. It is like the...
  4. H

    Gas Problem Dealing with Explosives

    We will consider the explosive amatol which is a mixture of trinitrotoluene (TNT) and ammonium nitrate (AN). Trinitrotoluene (left) has the chemical composition C7H5(NO2)3 and ammonium nitrate (right) has the chemical composition NH4NO3. We choose the TNT to AN molar ratio in the amatol...
  5. H

    Gas Problem Dealing with Explosives

    This is the rest of the email i got. Someone contacted me anonymously to give me a nudge in the right direction- or to confuse me. Is this bogus? No specific formula was given, but a general framework. See if you can figure it out. This was dealing with the explosive compound Amatol...
  6. H

    Gas Problem Dealing with Explosives

    To All, Thanks for all the input. Since my last post i have learned how to calculate bursting pressure. Basically, one using a combination of temperature, detonation velocity, and gammas of gasses and water. From this one can determine pressure at a distance. Then one can infer air volume. I...
  7. H

    Gas Problem Dealing with Explosives

    Hi Nerro, That is an excellent point! Is it possible to measure the air volume created by detonation velocity? So far, i have to calculate the following in order to infer quantity of explosives. Any additions anyone can suggest? -Volume of gas produced by explosives (have formula)...
  8. H

    Gas Problem Dealing with Explosives

    Q_Goest, I understand your suggestion about measuring the air velocity before the collapse initiates. The problem i have is that my technology is a thumb and a stopwatch. The expelling of the small amount of clouds right before the collapse only happens in a few frames- a split second. I have...
  9. H

    Gas Problem Dealing with Explosives

    Q_Goest, Thanks for the suggestions. Is it possible to infer velocity by a change in the volume of the clouds? Trigonometry? This way i can use the equation at various times during the collapse, then average out the results. vinter and Clausius2, Keep in mind that because of...
  10. H

    Gas Problem Dealing with Explosives

    vinter, What do i mean by the 'air volume of the overpressure'? From my understanding from chemistry (i am self-teaching that too!) an explosive compond releases a lot of gas when it expodes. Example, 1 mole of TNT release 10 moles of gas. This is added to the air already inside the...
  11. H

    Gas Problem Dealing with Explosives

    Thanks Q_Goest, Yes, i realize my question might raise a few eyebrows. I am trying to teach myself science. I might as well make it interesting, right? I saw a demolition on the Discovery channel and became curious as to how much explosives might have been used. Nothing major. But it poses an...
  12. H

    Gas Problem Dealing with Explosives

    This is the problem i am trying to solve. It is forensic in nature. I have a video of two floors of a burning building collapsing from explosives. The explosives created overpressure. I am trying to infer how much explosives might have been used. I figured out the air volume of the two...
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