125 questions and answers in this section
Explain why do the colors on computer screens differ from reality?

Explain why do the colors on computer screens differ from reality?

Screens do not reproduce all the colors that the human eye can perceive. Each screen has a gamut, which is a specific range of colors...

Read full answer

Explain why do our headphones tangle so easily?

Explain why do our headphones tangle so easily?

Our earphones are made of soft materials, mainly flexible plastic or rubber, which allows them to twist and bend freely. This complete lack of rigidity...

Read full answer

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...

Read full answer

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...

Read full answer

Explain why does the city of Tokyo (in Japan) have so many vending machines?

Explain why does the city of Tokyo (in Japan) have so many vending machines?

In Japan, you can't walk a few meters without coming face to face with a vending machine. The Japanese place a high value on convenience...

Read full answer