Editing 2649: Physics Cost-Saving Tips

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It suggests four ways to reduce costs or provide something for free for physicists to save money on their research. For instance getting free electrons from a conductor or replacing regular {{w|helium}} with {{w|Isotopes_of_helium#Helium-2_(diproton)|helium 2}}. None of these would provide any real advantages even when possible to implement, and could even be very dangerous, see below in the [[#Table of tips|table]]. Obtaining money from physics experiments was also described in [[2007: Brookhaven RHIC]].
 
It suggests four ways to reduce costs or provide something for free for physicists to save money on their research. For instance getting free electrons from a conductor or replacing regular {{w|helium}} with {{w|Isotopes_of_helium#Helium-2_(diproton)|helium 2}}. None of these would provide any real advantages even when possible to implement, and could even be very dangerous, see below in the [[#Table of tips|table]]. Obtaining money from physics experiments was also described in [[2007: Brookhaven RHIC]].
  
In the title text, Randall claims to have been banned from the county fair for handing out helium-2 balloons because of the instant massive explosions caused by its radioactive decay (that helium-2 decays fast is mentioned in the comic, with a joke suggestion to use it quickly). He jokes that the balloons violated a local ordinance. {{w|Gas balloon|Helium balloons}} are often given out at county fairs and similar events, but they are filled with {{w|helium-4}} and therefore inert (a very small part will be {{w|helium-3}}, 2 ppm). A balloon filled with helium-2 is a practical impossibility because of its nanosecond half-life. Assuming a 12-inch diameter balloon at 1 atmosphere of pressure, the balloon-bomb would have a yield of roughly 17 {{w|TNT equivalent|tons of TNT equivalent}}.
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In the title text, Randall claims to have been banned from the county fair for handing out helium-2 balloons because of the instant massive explosions caused by its radioactive decay (that helium-2 decays fast is mentioned in the comic, with a joke suggestion to use it quickly). He jokes that the balloons violated a local ordinance. {{w|Gas balloon|Helium balloons}} are often given out at county fairs and similar events, but they are filled with {{w|helium-4}} and therefore inert (a very small part will be {{w|Helium-3}}, 2 ppm). A balloon filled with helium-2 is a practical impossibility because of its nanosecond half-life. Assuming a 12-inch diameter balloon at 1 atmosphere of pressure, the balloon-bomb would have a yield of roughly 17 {{w|TNT equivalent|tons of TNT equivalent}}.
 
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|Conductors are a great source of free electrons (may carry charges)
 
|Conductors are a great source of free electrons (may carry charges)
|{{w|Charge carrier|Free}} {{w|electron}}s are electrons that are not tightly bound to specific atoms so [https://www.youtube.com/watch?v=TGUteH93xNo they can move freely,] such as in {{w|conduction band}}s of the {{w|metallic bond}}s throughout the iron ingot depicted in the comic. Randall interprets "free" in a different sense, meaning no cost. The charges free electrons carry are electric, not monetary as implied by the pun. Ordinary matter usually contains electrons, but although the {{w|dielectric}} layer of a {{w|capacitor}} can collect electrons, it is not easy to store pure electrons, as they repel each other. When a {{w|Solution (chemistry)|solution}} has free electrons, it becomes {{w|alkaline}} ({{w|Base (chemistry)|basic}}) and corrosive. Randall has [https://what-if.xkcd.com/140/ explained the problems] with collecting a large number of electrons before.
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|{{w|Charge carrier|Free}} {{w|electron}}s are electrons that are not tightly bound to specific atoms so they can move freely, such as in {{w|conduction band}}s of the {{w|metallic bond}}s throughout the iron ingot depicted in the comic. Randall interprets "free" in a different sense, meaning no cost. The charges free electrons carry are electric, not monetary as implied by the pun.
 
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