I saw this cool video (its more a hot video) (hot in the sense of cold and heat etc) [youtube]http://www.youtube.com/watch?v=uzkNI4YIU2o[/youtube]
hahhaha proto... i where thinking of the same! btw: did he burned his hand prety much on making this vid? ive tried it by my own couple years ago but wont do it again... fried my hands ont those things
no actully no... its true that different part of a flame burns with different intensity. therefore different temperature. a flame made of gasoline under normal pressure. 1bar. burns in 3 stages. u got the invisible flame. thats layer number one.. under pressure this can become white. then there is the blue flame.. thats the second layer.. that can be seen with the naked eye. and occures under good conditions (enough oxygen) and then there is the yellow flame.. thats the third layer.. and this can be seen in under any conditions. as long as long as the conditions meets the specifics to sustain a flame. (lots of residue when it burns under poor conditions) all three layers of the flame carries different temperature. but all are hot.. enough to seriously cause tissue damage and death in worst cases. (but rarely happen) to understand how this works u need to understand the process when something is burning. only gasses burn. this is with no exceptions! (dare u resonate to something else ) the heat makes the material to evaporate and then ignites. so there is a zone between the flame and material that is not in flame. and therefore hold a lower temperature. and therefore can be handled. when ur hand is on the material (ball), u block that gas to ignite. therefore no flame where ur fingers are. and since the heat is evaporating the material (gas in ball) there will be constant layer that will hold a lower temperature. (as long as the gasoline is still in the ball) but this is only valid as long as ur not corssing on to the heat wawe emitted from something that is burning. heat allways rise.. so as long as u keep ur fingers below this heat wawe... u will be ok.. but there is still one heat source emitting from a flame.. and that can travel down wards. thats the radiation of the flame. u will still feel this heat. so move the ball so the heat radiation aint hitting on the same spot over a periud of time. 0.5 sec? something like that.. keep the ball moving and u will be fine.. as shown in the move. he moves the ball allmost constantly. now this was mabe a bit confusing.. but its hard to explain if u dont like physics, and have no knowlege from this beforehand.. but this is the best explanation i can give on this mather...
well.. the fabric shuldnt be abel to burn.. but mabe the gasoline was dripping on to ur fingers? when this happens... u cook ur fingers.. since the heat is warming the gasoline up. thats explains why ur fingers hurt after the experiment.. (i did the same... but i did it with out fabrik.. gasoline on my hand.. and was a bit messy so it was on the back of my hand to but id still do it agen )
if you see the movie you can see that there are warnings : don't touch the heat part rasen told about and don't get your fingers soaked in the lighter fuel
thanks for the explanation... but i still can remember the pain ive got from the ball.. so I dont do it again
I did make 2 fireball now i tryed with Axe (deodorant) the axe didnt work that good it woudnt burn then I taked some lamp oil, and that was a better burn method. I can hold the ball in the palm of my hand for 1,5 a 2 seconds (quiet hot but not burning on my hand) TIP: First wash ur hand and dont dry them, when it gets to hot dont pull your hand away, (the ball can fall and do damage to, clothes or something else arround) just blow hard and fast, or close your hand fast. WARNING This Product uses Real fire. Even when handled with care there is a risk of injury to persons and property Realy cool 8) Grtz Dommel...