52 questions and answers in this section

Technology and Computing » Gadgets and Electronics

Explain why light-emitting diodes (LEDs) are more energy efficient.

Explain why light-emitting diodes (LEDs) are more energy efficient.

Light Emitting Diodes, or LEDs, emit light through a phenomenon called electroluminescence. When an electric current passes through an LED, electrons encounter electron holes—which are...

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Explain why it is difficult to read a smartphone screen in direct sunlight?

Explain why it is difficult to read a smartphone screen in direct sunlight?

When using a smartphone screen in direct sunlight, one of the main issues is the ambient brightness around us, which is much stronger than the...

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