• Smokeless powder/high explosives

DEVELOPMENT OF SMOKELESS POWDER

• Black powder was dirty and smokey.
• Paul Vieille invented the first successful smokeless gunpowder.
• A person could shoot more rounds and not damage his gun.
• You cannot use smokeless gun powder inside a Black Powder gun.

WHERE THE POWDER WAS FIRST USED

• French Army
• Spanish-American War
• World War 1

THE BALANCE OF POWER

• It made it easier to fight wars
• In World War I more people died
• Broke the balance between societies

Smokeless powder that is used today

• Gunpowder now put directly in casings
• Used in fireworks and firecrackers in small amounts.

WHAT DO HIGH EXPLOSIVES DO?

• Make smoke, flame, and noise.
• Pressure up to 500,000 times the Earth's atmosphere.
• Huge amounts of energy in billionths of a secon.
• Travels as fast as 10 kilometers per second.
• Temperatures can soar to 5,500 kelvin

HISTORIES

• Nitroglycerin
• Picric acid
• TNT

WAR AND THE BALANCE OF POWER

• Picric acid was used in the Second Boer War and Russo Japanese War.
• It helped British people win the second Boer War.
• British still used it in World War I, but Germany used TNT.
• Plastic explosives made sabotage easier in World War IIu.
• It is used for military engineering like blasting rocks

TODAY AND FUTURE

• Hundreds of high explosives
• Improvised explosive devices(IED)
• Explosives will be used in motors.

BIBLIOGRAPHY

• Davis, William C., Jr. (1981). Handloading.
• National Rifle Association of America.
• Fairfield, A. P., CDR USN (1921). Naval Ordnance.
• Lord Baltimore Press.

ACTIVITY