This is a Popular Mechanics tribute to LEDs. Are the facts true or false?
31. LED Russian Oleg Vladimiovich Losev invented the first LED in 1927,
though no practical use was found. Nick Holonyak, Jr., of GE pioneered
the first practical visible-spectrum LED, in 1962. Since then, LED
efficiency has doubled every 36 months.
Read more: 101 Gadgets That Changed The World - Top 101 Gadgets of All
Time - Popular Mechanics
31. LED Russian Oleg Vladimiovich Losev invented the first LED in 1927,
though no practical use was found. Nick Holonyak, Jr., of GE pioneered
the first practical visible-spectrum LED, in 1962. Since then, LED
efficiency has doubled every 36 months.
Read more: 101 Gadgets That Changed The World - Top 101 Gadgets of All
Time - Popular Mechanics