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June 15 2015

4037 e60a


Fucking litterbugs

Reposted fromsimonsayer simonsayer viawszbchgl wszbchgl

January 26 2015


July 08 2014


How to tell if it was a gunshot or fireworks




How to tell if it was a gunshot or fireworks: gunshots don’t echo, fireworks do. 


the fact that anyone might commonly need to know this terrifies me

Reposted bynaichmawrrrandomusercoloredgrayscaleaperturePachadivolldostspinatlasagnegabrieluntermbettstraycatKurkaWyluzujokretowazupacrispybones

July 06 2014

8733 3299


Did you know fireworks were originally used to chase away evil spirits?

From the TED-Ed Lesson The deadly irony of gunpowder - Eric Rosado

Animation by Zedem Media

Reposted bymrymrumruLogHiMaMrCoffeavaritiaCarridwen
8727 d59d


Spark, Spark! The Chemistry of Fireworks 

Ever wondered what causes those fancy fiery works of art shine so bright? The science of how fireworks operate is actually simple. And we’ll find out.

Pyrotechnics, especially fireworks, operate on a simple theory called combustion. Combustion involves the use of oxygen, that why you can’t light a fire in an airtight setup. It also involves the release of energy, in form of heat and/or light energy.

For a firework to burst into an array of spectacular colors, it must contain the following:

  1. Fuel. Must contain either charcoal or thermite alongside the common blackpowder.
  2. Oxidizing Agents. These produces the oxygen needed to burn the mixture. These are either nitrates, chlorates, or perchlorates.
  3. Reducing Agents. These react with the O2 released by the oxidizing agent/s to produce hot gases, and can also be used to control the speed of the reaction. Sulfur and charcoal are the most common reducing agents used.
  4. Metals. These also control the speed of reaction. Larger surface area = faster reaction rate.
  5. Coloring Agents. They give color to the firework. Strontium (Sr) produces red, Copper (Cu) produces blue, Barium (Ba) produces green, Sodium (Na) for yellow, Calcium (Ca) for orange, and Gold (Au) or Titanium (Ti) for an iron-ish color. These elements when heated, produces excess energy in form of light, and the higher the temperature, the shorter the wavelength.
  6. Binders. These hold the mixture in a paste-like texture. The most commonly used binder is dextrin, though parson is also used.

So, fireworks are actually maelstroms of excess heat energy released by different reactions occurring inside the canister. So as we welcome 2014, let us appreciate these brilliant works of both art and science. Cheers to a new year!


[Source: http://www.ch.ic.ac.uk/local/projects/gondhia/composition.html]

Reposted bymolotovcupcakemanxxhappykokeshiikari-MacekpulegonLogHiMastraycatelektronowyavaritiaCarridwenheroine88Pedros7lou8liarsfrezjaxmascolara
8717 d449


Following on from yesterday’s post on gunpowder, here’s an updated version of one of the earliest posts on the site, looking at the cause of the colours in fireworks: http://wp.me/p4aPLT-1t

Reposted byavaritiaCarridwenmanxxhappykokeshixajikariA-Bene-Placitoelinelabmpquantumpulegonliarsniespodziewankaichwillsommerankintemptationmammutholamasdolipcoweczeresnieasiunka2991elayampileinstraycatcarlandlouisegoaskaliceshitty-loveavgpkocieserceadharaheroine88Mezamereloveutionfrezjatigerlily1954metanoizeNeutruminzynierJonaefutureiscomingstragan-ze-snamikasiarzynawindingroadsxmascolaradantemplaspinatlasagnewhoville

November 04 2013

such boom
so blaze
Reposted fromSoylentHolger SoylentHolger

July 23 2013


November 17 2012

2055 ccc1
Reposted fromcountingme countingme viabibistar bibistar
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