Explosions
Published on Nov 28, 2015
No Description
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
nuclear
- fusion - two small atoms become one
- loss of mass becomes energy
- E=MC(squared)
- Fission - one large atom hit with neutrons
- it splits and energy is released
Fusion ... think sun
Fission ... only form we've figured out how to use ... constructively
Massive amounts of energy release .. see Einstein's equation
Fission ... only form we've figured out how to use ... constructively
Massive amounts of energy release .. see Einstein's equation
Photo by Pierre J.
Chemical
- multi uses
- explosion = gas volume bigger than solid or liquid state
- extremely fast expansion
- vapor cloud explosion
- exothermic
Much of what we're doing is a vapor cloud explosion.
Exothermic ... releases heat
Exothermic ... releases heat
Photo by haglundc
physical
- ruptured pipline/vessel
- tire puncture
- broken bladder
Think of tires popping
BLEVE - boiling liquid evaporating vapor explosion.
Some gasses are transported as liquids. When they reach room temperature during a rupture, they violently expand. This could result in a decent shock wave.
BLEVE - boiling liquid evaporating vapor explosion.
Some gasses are transported as liquids. When they reach room temperature during a rupture, they violently expand. This could result in a decent shock wave.
Photo by mic.jo'mo
in common
- rapid change of state
- heat, light, energy, pressure
- blast wave
- potential to kinetic energy
When we move from potential energy to kinetic, this usually involves work.
Photo by Chris Nuzzaco
History
- China 10th century - gunpowder
- Europe 14th - gunpowder
- guncotton mid 19th
- dynamite 1866 (Alfred Nobel)
- ballistite/cordite late 1800s
Other materials since then. Think fertilizers.
Photo by cgalvin233 Colleen
low explosive
- slow burning (
- needs confinement
- smaller particles faster burn
- gunpowder - sulfur, K nitrate, charcoal
- later - ballistite and cordite
Photo by bob in swamp
high explosive
- faster burning (> than speed of sound)
- needs explosive to start reaction
- detonator
- TNT - refined petro & nitric/sulfuric acids
- dynamite - nitro and absorbent (more stable)
Photo by Defence Images
What Next?
- Newtonian Physics
- look at the combustion engine animation
- where else is potential chemical energy used?
- keep frequent notes, reflections, images
- record the tinkering process.
Photo by Sprengben [why not get a friend]
