4G data network

Directory

References

Discover

Black widow spider

9 of the World’s Deadliest Spiders

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

Solar eclipse of the sun.

The Sun Was Eaten: 6 Ways Cultures Have Explained Eclipses

Pluto. The Changing Faces of Pluto. Most detailed view to date of the entire surface of the dwarf planet Pluto, as constructed from multiple NASA Hubble Space Telescope photographs taken from 2002 to 2003.

10 Important Dates in Pluto History

Solar Eclipse, Eclipse, Solar Flare, Outer Space, Astronomy

What Causes Lunar and Solar Eclipses?

After a perfect launch, spectators try to catch a last glimpse of Space Shuttle Columbia, barely visible at the top end of the twisted column of smoke.

7 Accidents and Disasters in Spaceflight History

Albert Einstein in Washington, D.C. c. 1921-1923. Physicist

The Solar Eclipse That Made Albert Einstein a Science Celebrity

4G data network

technology

Also known as: fourth-generation data network

Learn about this topic in these articles:

mobile telephones

In mobile telephone: Development of cellular systems
…led to the development of 4G technology. In 2008 the ITU set forward a list of requirements for what it called IMT-Advanced, or 4G; these requirements included data rates of 1 gigabit per second for a stationary user and 100 megabits per second for a moving user. The ITU in…
Read More

WiMax

In WiMax
Part of fourth generation (4G) wireless-communication technology, WiMax far surpassed the 30-metre (100-foot) wireless range of a conventional Wi-Fi local area network (LAN), offering a metropolitan area network with a signal radius of about 50 km (30 miles). In the early 2000s, WiMax proponents hoped to establish a global…
Read More