ppt on inventions
TRANSCRIPT
Inventors can be anyone that wants to help the world!
People have been creating inventions for hundreds of
years.
Refrigerator• The refrigerator was invented to help
keep food from spoiling in the heat.• Carl von Linde invented the refrigerator
in 1876.
Airplane• Wilbur and Orville Wright built the first
airplane. • Their invention was very special because it
was the first flying machine. In 1903
Flying Kite
New CarsCars have gotten new design.
They cost more money, but they are safer than the old Model-T cars.
Electricity
• Building upon Franklin's work, many other scientists studied electricity and began to understand more about how it works. For example, in 1879, Thomas Edison invented the electric light bulb and our world has been brighter ever since! But was Benjamin Franklin really the first person to discover electricity?
Medicine
• The invention of medicines dates back to centuries. It was in around 3000 B. C. that the Egyptians used remedies to fight diseases and they also performed basic surgeries by general examination of the patient and mainly the guess work and magic worked
Radio
• Guglielmo Marconi: an Italian inventor, proved the feasibility of radio communication. He sent and received his first radio signal in Italy in 1895.