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You're walking through your local electronics store looking for a new TV, and you come across a thing called an "LED TV".
This isn't the same technology they use for the giant screens at football games; in fact, the LED screens you see in shops are actually LCDs, and the term "LED" is the invention of Samsung's marketing department.
How do they get away with this? Samsung's televisions use a series of Light Emitting Diodes (LEDs) — like the ones used in LED torches and alarm clocks — to "backlight" the LCD panel, and it's not the only company that does this. But what is backlighting, anyway?
