Day in Tech History

January 17: Carbon Microphone for Telephone

Play
Share!

Share this Podcast

MyCast

MyCast

MyCast Subscription

Day in Tech History

Jeffrey Powers

Madison, WI

Description: For the Tech History Geek in all of us

Now Playing

January 17: Carbon Microphone for Telephone

Play Download media
1882 - Thomas Edison created more tech history when he was granted a patent for the carbon microphone for the telephone. The carbon was in between two cups and attached to the mouthpiece. The diaphragm would change pressure, causing the carbon to be pushed upon. That would send electric current to t...