Question

Which group invented and developed the early Internet?

Answer 1

ARPANET adopted TCP/IP on January 1, 1983, and from there researchers began to assemble the “network of networks” that became the modern Internet. The online world then took on a more recognizable form in 1990, when computer scientist Tim Berners-Lee invented the World Wide Web.

Answer 2

To release an electron from a metal surface, the photon must have sufficient energy. ... Those with this amount of energy (or more) will liberate electrons. The threshold wavelength ( more commonly threshold frequency) is the wavelength/ frequency of a photon with just sufficient energy to liberate an electron.