RADIOS

RADIOS ARE

• Radios are devices that transmit and recieve
• images and sounds through radio waves

RADIO WAVES

• Radio waves are waves
• that transmit sounds and
• images through signals
• in the air

PROS

• Easy to use
• Can receive messages quickly
• Good for entertainment
• Useful to the Military

CONS

• You have to be near one to hear or see it
• They can go out of server connection
• They require batteries
• We have different tchnology that can do
• the same things faster

IMPORTANT FACTS

• Radios come the telephone and telegraph
• They work via radio waves

TIMELINES
1860- Maxwell predicted the existence of radio waves. 1886- Radio waves were actually discovered. 1895- Marconi received the first radio wave in Italy. 1899- Marconi flashed the first wireless signal. 1902- Marconi received a signal back. 1943- Telsa earned the first radio patent.