WATCH: Uranium emits radiation inside a cloud chamber - ScienceAlert |

"Ever wondered what radiation looks like? If you have, I bet you didn’t think it would look as cool as this. This is a small piece of uranium mineral sitting in a cloud chamber, which means you can see the process of decay and radiation emission..."

– WATCH: Uranium emits radiation inside a cloud chamber - ScienceAlert 

A sealed glass container contains liquid alcohol at the top. Emanating alcohol vapors fill the whole volume of the container until they reach the bottom of the chamber maintained to a very cold temperature (-40°C).
Most of the vapour condenses on the glass surface creating a mist, but a small fraction of it stays in vapour form above the cold condenser. This creates a layer of unstable sursaturated vapour which can condense at any moment. When a charged particle crosses this vapor, it can knock electrons off the molecules forming ions. It causes the unstable alcohol vapor to condense around ions left behind by the travelling ionizing particle : the path of the particle in the matter is then revealed by a track composed of thousands droplets of alcohol...

more: ▶ Cloudylabs cloud chamber working approx 50 min [720p] - YouTube

The Uranium Waltz

By Sue Prent

 Unless you’re a science geek who routinely trawls YouTube for entertainment, you probably haven’t seen this fascinating clip that observes a small pellet of uranium as it just sits sealed in a lighted cloud chamber infused with vaporized alcohol.

 To the strains of a Strauss waltz, puffy little trails begin to erupt from the uranium in staccato straight lines, shooting through the alcohol cloud and radiating in all directions like soft white fireworks. It’s a mesmerizing sight to behold.

 It is also a sobering one, because what we are enabled to observe through that cloud of alcohol is the behavior of one of the most aggressive toxins on earth: radioactive decay.

This is the stuff that gives nuclear weapons their destructive energy; the instability that, in the course of things, has been somewhat inefficiently harnessed to generate simple electricity.

 It takes a whole lot of uranium, a relatively low energy source of radiation, to produce a little bit of weapons-grade plutonium. Between the mine and the battlefield, turning uranium into reactor fuel is a convenient first step on the way to enabling nuclear weapons, which is a major reason so many countries want “nuclear power”.

 The dependent relationship between nuclear weapons and nuclear power stations provides one of the biggest bones of contention in the world today.

 Setting that aside for others to consider, and returning to the simple lesson that is so vividly illustrated by the video, one cannot ignore the fact that even the tiniest particle of uranium is alive with radioactive potential.

 Imagine the environmental hazards associated with every stage of uranium processing, from extraction to waste disposal, when every tiny particle is literally bristling with projectile energy.

 While uranium in minute amounts is a common enough component of rock and soils available almost everywhere, there are relatively few places on earth where concentrations of uranium rich mineral deposits are great enough to represent opportunities for cost-efficient mining.

 The danger to mine workers is not so much from the uranium ore, which has low concentrations of pure uranium relative to the mass in which it is sequestered. The real danger lies in the fine particulates and radon gas that are released from the rock in the course of mechanical extraction.

 This hazard threatens the surrounding environment and population as well, since slurry and waste from the mining operation find their way into groundwater and may be redistributed through the air as well.

 Even decades after uranium mines have been exhausted for all practical purposes, surrounding populations must endure the continuing threat posed by tailings, a waste byproduct of uranium mining. For example, hundreds of residents of the Navajo communities of North Church Rock and Quivera, New Mexico, where two nearby uranium mines ceased to be profitable and were abandoned at the close of the Cold War have suffered enormous health risks due to the mountainous piles of waste that the uranium mines simply left behind.

 Ever since these New Mexico mines closed, corporate owners of the two lethal stacks have been feuding with the federal government over who is responsible for the cleanup.

 At least one of the waste piles is scheduled to move down the road to a tailings dump, which will distance it somewhat from the local population, if not from the greater environment.

 That move in itself raises another point of contamination in the uranium fuel chain: transportation. To transfer the waste to a less objectionable location, it is estimated that 38 open dump trucks will be required. Loading the trucks will stir up so much harmful particulate matter that the government will relocate residents for up to five years following the move in order to allow the dust to settle again, and to monitor the grounds for remaining contamination.

 Just imagine each of those tiny particles being energized like that uranium pellet in the cloud chamber, and small enough to be inhaled… Now imagine what happens on a cellular level when all that bristling energy lodges deep in the human lung and continues to radiate indefinitely.

 As those loaded dump trucks wheel through the environment to their ultimate destination, it isn’t difficult to imagine that they will be seeding the air with radioactive dust and particulates, endangering all who live and work along the way.

 These same hazardous scenarios play out on a daily basis around active uranium mines, and at the processing plants where uranium ore is refined into nuclear fuel. I would guess that the concentration of harmful radiation in millings and tailings might be even greater as the uranium undergoes further refinement in the fuel production process.

 Even if none of the collateral contaminants distributed by mining are considered, when nuclear energy production is viewed strictly from the perspective of fuel sourcing, it is clearly far, far from a “clean” energy source.

– via Fairewinds Energy Education​ [email]