What is a mushroom cloud?

What is a mushroom cloud?

Sixty-nine years ago, a new type of cloud was the focus of scientific research: the mushroom cloud produced by cold war atomic tests. Ivy Mike, which took place on 1 November 1952, was the first full-scale test of a hydrogen bomb. Equivalent to more than 10m tons of TNT, it obliterated the small island of Elugelab.

What is the mushroom cloud from Redoubt Volcano?

Ascending cloud from Redoubt Volcano from an eruption on April 21, 1990. The mushroom-shaped plume rose from avalanches of hot debris ( pyroclastic flows) that cascaded down the north flank of the volcano. Mushroom cloud from the atomic bombing of Nagasaki, Japan on August 9, 1945.

What is the distribution of radiation in a mushroom cloud?

The distribution of radiation in the mushroom cloud varies with the yield of the explosion, type of weapon, fusion–fission ratio, burst altitude, terrain type, and weather. In general, lower-yield explosions have about 90% of their radioactivity in the mushroom head and 10% in the stem.

What does the castle Union mushroom cloud look like?

The mushroom cloud from the 6.9-megaton Castle Union hydrogen bomb test, showing multiple condensation rings. The water column from the 21-kiloton Crossroads Baker test, involving a nuclear underwater explosion, showing a prominent, spherical Wilson cloud .

Definition of mushroom cloud. : a mushroom-shaped cloud specifically : one caused by the explosion of a nuclear weapon.

Why are mushroom clouds associated with death?

Mushrooms have traditionally been associated both with life and death, food and poison, making them a more powerful symbolic connection than, say, the “cauliflower” cloud. Inside a rising mushroom cloud: denser air rapidly forces itself into the bottom center of the toroidal fireball, which turbulently mixes into the familiar cloud appearance.

Why do mushroom clouds have rings of condensation?

Layering of humidity in the atmosphere, responsible for the appearance of the condensation rings as opposed to a spherical cloud, also influences the shape of the condensation artifacts along the stem of the mushroom cloud, as the updraft causes laminar flow.

What happens to the radioactive particles in a mushroom cloud?

The radioactive particles, however, remain suspended in the air, and the now-invisible cloud continues depositing fallout along its path. The stem of the cloud is gray to brown in a groundburst, as large amounts of dust, dirt, soil, and debris are sucked into the mushroom cloud.