Lightning strikes, lasting less than a half-millionth of a second, often scorch the skin but don't cause internal burns. Just as crucial, most of the electricity in a lightning bolt does not pass through the body. Rather, it dissipates over the skin in what's known as a flashover. Vernon Cooray, a lightning scientist at Uppsala University in Sweden, explains the phenomenon by contrasting the ways a human body and a tree react when struck.
Human-computer interaction (HCI) is the study and planned design of human and computer activities. HCI uses productivity, safety and entertainment to support and fulfill human-computer activities and is applied to various types of computer systems, including air traffic control, nuclear processing, offices and computer gaming.
with a computer in any given environment.2 And. Human-Computer Interface (HCI) would refer to the point where people and technology meet â any point. where data is communicated from a user to a computer, or vice versa. HCI allows users to input an instruction to the computer. In turn, the computer should provide a response. or feedback to the userâs input.