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Member Since 05 May 2015
Offline Last Active May 12 2015 12:09 AM

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In Topic: Static electricity inside the firecracker?

12 May 2015 - 12:09 AM



Thanks again!

In Topic: Static electricity inside the firecracker?

09 May 2015 - 11:54 AM

If you want to research static electricity charges on different materials, you'll need an Electrometer.

Electrometer. http://en.wikipedia....ki/Electrometer
Kolbe's Electrometer/Electroscope. http://www.orau.org/...pes/MaxKohl.htm

Electronic Electrometers

electrometer schematics. http://www.next.gr/c...ics-l35901.html

Simple Electrometer. http://www.vk2zay.net/article/9

An Experimenter's Electrometer. http://amasci.com/el...p1.html#Electro

Or, you can purchase one. http://www.pasco.com...c-electrometer/

Oh, i didn't knew about this. Thanks so much for the info!

In Topic: Static electricity inside the firecracker?

05 May 2015 - 08:59 PM

Life is full of risks, you have to accept that or you would not get out of bed in the morning.

There is no such thing as 100% safety, it's up to you how much risk you are prepared to take.

I agree life is full of risks. I mean i like to do the best to avoid the risk. 


@digger Thanks for the pdf i saw that kclo4/al is the least sensitive as i expect. I will stay with this composition. I have not knowledge to calculate the static inside the container. But my opinion is like cooperman435 said even if there is static inside the tube you need a discharge inside to ignite the flash. So if you seal good the container it's impossible i think especially with kclo4/al. 

There are many big companies in Italy that makes very large firecrackers even 100gr fast flash inside cardboard. If you turn the firecracker upside down you can feel the powder move. The firecrackers have ce certification that means they have pass tests and are 100% safe if you follow the instructions, as they say. For years i haven't hear any accident with these firecrackers.

In Topic: Static electricity inside the firecracker?

05 May 2015 - 06:18 PM

No one will be able to give you a certain answer but only a probability.


The chances of a tube containing Flash Powder detonating if you shake it are low, higher if the tube is a plastic such as PVC, but still low (although why Flash Powder is being encased in a plastic tube is beyond me...). However, as with all things in pyrotechnics, it's not a certainty that it won't. Basically don't go shaking the hell out of a salute, but if it gets shaken around a little in the back of your car on the way to a display site, it shouldn't be a problem.


I don't like to play with probabilities. I want to do something only if i am 100% sure that it is safe. If you are ok with the conference that there is probability to lose your life i don't have problem with this. I thinking the same way you think before years when i had a terrible accident and i lost temporary part of my hearing. I thanks GOD today i am ok.

I don't looking for the perfect answer, i want an answer from someone who had some scientific knowledge. 

In Topic: Static electricity inside the firecracker?

05 May 2015 - 04:01 PM

Even paper can hold some static

Read: http://mobile.na.sap...ty in Paper.pdf


What do you think about plastic??