A police office named William Potts of Detroit Michigan in 1920 invented the traffic signal. His race is not mentioned.
yes
No. The electric light, one of the everyday conveniences that most affects our lives, was invented in 1879 by Thomas Alva Edison. BUT Lewis Latimer improved it...
Edison did not invent the first electric light bulb, but instead invented the first commercially practical incandescent light. He therefore just improved on other peoples work.------------------------------------------------------------------------------------------------------------Thomas Edison invented the light bulb because people needed it to see in the dark and so he could become a successful man.
If it's completely black it doesn't reflect any light, but I doubt there is such an object except black holes. But if it is not completely black, the brighter it is the more light it reflects.
Thomas Edison did not invent the lightbulb. The lightbulb was first created by a Belgian man named Jobard in 1835 and Frederick de Moleyns obtained the first patent for such a bulb in 1841. Thomas Edison invented an improved version of the bulb in 1879.
Man did not invent light. Light has been around since the beginning of the universe. Man did; however, discover electricity, learn how to produce it, and invent the lightbulb over 150 years ago.
no
Nope. It was a white guy. Martin Cooper in 1973. Nor did a black man invent the air conditioner, peanut butter, ice cream, traffic light, and a host of other poorly researched self esteem building myths that pop up in schools and local news pieces every February!
In short, no.
yes
yes
No. He was British and white. He invented a form of the traffic light which resembled the railroad signals where he worked.
No. A traffic light is a man made object, not part of the natural environment.
No. The electric light, one of the everyday conveniences that most affects our lives, was invented in 1879 by Thomas Alva Edison. BUT Lewis Latimer improved it...
garret Morgan invented the traffic light, gas mask and man other
yes but i don't know the name
HE WAS THE FIRST BLACK MAN THE INVENT NEW FLAVORS OF ICE CREAM.