You are looking at 1-4 of 4 entries  for:

  • All: nuclear Freeze x
  • History of Science x
clear all

View:

Overview

nuclear Freeze

During the Cold War, several periods of protest against nuclear weapons took place in the United States. By far the largest protest campaign involved the nuclear freeze movement. This ...

Big Bang

Big Bang   Reference library

Magic Universe: A Grand Tour of Modern Science

Reference type:
Subject Reference
Current Version:
2009
Subject:
Science and technology, History of Science
Length:
3,946 words

...the more distinctive cosmic forces of later epochs do not yet exist. Every millilitre of the expanding space nevertheless carries the genetic codes for making them. Each force will appear in its turn as the expansion reduces the temperature to a critical level at which it freezes out. First the electronuclear force splits into the colour force of chromodynamics, which operates at short range on heavy particles of matter, and the electroweak force, a hot version of the familiar electric force of electrodynamics. When the temperature has shed a dozen...

Extremophiles

Extremophiles   Reference library

Magic Universe: A Grand Tour of Modern Science

Reference type:
Subject Reference
Current Version:
2009
Subject:
Science and technology, History of Science
Length:
2,356 words

...in Antarctica seemed more challenging. Penguins huddle together in the winter darkness to minimize their heat loss. On the other hand the nematode Panagrolaimus davidi , a worm almost too small to see, which lives among algae and moss on ice-free edges of Antarctica, regularly freezes solid each winter. It can chill out to minus 35°C with virtually all its metabolism switched off, and then revive in the spring. In laboratory tests, it can go down to minus 80°C without problems. Investigating the nematode's survival strategy, Wharton found that the rate of...

Plasma crystals

Plasma crystals  

Magic Universe: A Grand Tour of Modern Science

...produced by meteors burning up in the atmosphere, and also by dust from the surface mixing with air electrified by lightning strokes, ultraviolet rays from the Sun, and cosmic rays from the Galaxy. Dust grains play a daily role in providing the nuclei on which water condenses or freezes, to make rain and snow. Whether the shadow force speeds their growth to an effective size, for cloud formation, is a now a matter for investigation. Smart dust Plasma crystals give scientists the chance to study analogues of atomic latticework on a vastly enlarged scale....

Plate motions

Plate motions   Reference library

Magic Universe: A Grand Tour of Modern Science

Reference type:
Subject Reference
Current Version:
2009
Subject:
Science and technology, History of Science
Length:
3,688 words

...gravity, is sustained by energy released by radioactive materials present in the rocks of the Earth's interior. You can think of all activity at the surface as a direct or indirect result of heat trying to escape. Eventually it will succeed to such an extent that the planet will freeze, as its neighbour Mars has done already, and geological action will cease. A pan of water carries heat from the stove to the air, by the hottest water rising and cooled water sinking back again. Convection of a similar kind must operate, however sluggishly, inside the Earth. Even...

View: