WONDER #695: What Are LEDs?

Question 1 of 3

What does LED stand for?

1. light-emitting diode
2. light energy definition
3. limited electric diode
4. lighted electric dot

Question 2 of 3

Who created the first LED in 1962?

1. Benjamin Franklin
2. Albert Einstein
3. Thomas Ledison
4. Nick Holonyak, Jr.

Question 3 of 3

Which of these is NOT a benefit of LED bulbs?

1. They don’t get as hot as regular bulbs
2. They last much longer than regular bulbs
3. They emit less carbon than regular bulbs
4. They never burn out

Check your answers online at https://wonderopolis.org/index.php/wonder/what-are-leds.