Li-Fi: Transmitting Internet Data with Light Beams

Internet on beams of light

Chapter 1

Bending light inside glass

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Chapter 2

The deep sea cable network

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Chapter 3

Beaming data through thin air

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Chapter 4

Translating data into photons

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YOUR GOAL

Master of Internet on beams of light

Ch 3 · Beaming data through thin air

play_review Wireless Optical Communication

Across the Congo River, we're shooting beams of light, Sending high-speed internet through the air tonight.

play_review Project Taara and wireless laser beams

Li-Fi and the future of home lighting

play_review Li-Fi technology uses standard LED lightbulbs to transmit high-speed data wirelessly through the air to local devices.

Fun Fact

Space cat video: In 2023, NASA successfully beamed a 15-second high-definition video of a cat named Taters from 19 million miles away using space lasers.

Inter-satellite laser links in space

play_review Modern satellite constellations use lasers to beam data directly between spacecraft, creating an ultra-fast internet network in orbit.

Glossary

free-space optical communication (noun)
A telecommunications technology that uses light propagating in free space to wirelessly transmit data. Alphabet's Project Taara used this technology to transmit internet data across the Congo River.

Quiz

Why does light travel faster through the vacuum of space than through a glass fiber optic cable?

Gossip

Which light technology is coolest?

play_review Align satellite mirrors to discover how light beams transmit internet data across space.

play_review The battle against atmospheric obstacles

Quiz

Why is Li-Fi considered more secure than traditional Wi-Fi?

play_review Inter-satellite laser links in space

Quiz

Which type of light is most commonly used in free-space optical internet links to avoid distracting humans?

play_review Li-Fi and the future of home lighting

Quiz

Which Alphabet project uses wireless laser beams to send high-speed internet across rivers and canyons?

Quiz

How does Li-Fi transmit data from an LED bulb to a computer?

Quiz

What was the subject of the high-definition video beamed by NASA's deep space laser in 2023?

Quiz

Who invented Li-Fi, the technology that uses LED lightbulbs to transmit wireless data?

Quiz

What is the primary physical obstacle that can easily disrupt free-space laser internet on Earth?