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There are warning signs for ionizing radiation, biohazard, corrosives, flammables, explosives and lasers.
Distinctive international-standard graphics warn against trap hazards, the need for eye or hearing protection, and many others.
We suggest a set of standardized signs for "dark" matter and
energy.
These signs could be placed anywhere, to alarm, confuse and disturb.
A label might, for example, read "WARNING ! Weakly interacting Dark Matter in this area. Take appropriate precautions", or "Danger ! Undetectable Dark Energy beyond this point !"
Then see who panics and/or tries to sue ...
"WARNING: Dangerous levels of neutrino radiation beyond this point"
https://what-if.xkcd.com/73/
As this page shows, there is a need, somewhere in the universe, for such a sign. [hippo, Apr 10 2017]
Warning signs
http://i.imgur.com/eBJLBBi.jpg
May be applicable [8th of 7, Apr 10 2017]
[link]
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So not about letting you know that the light switch has not been turned on. |
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Could the "dark" warning be a warning light? |
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Incidentally, about this dark matter, I think I know what it is. If - in addition to having no meaningful interactions except for gravitation - it frequently borrows and fails to repay money, then dark matter is Sturton |
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"Now, neutrinos. Well, a neutrino is almost, but not quite, nothing. It's something that hardly does anything, except exist. If you have trouble visualizing this, think of your son-in-law." |
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//Well, a neutrino is almost, but not quite, nothing.//
So, what happens when you shine a light on a neutrino? Does it, y'know, cast a ... |
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Those warnings signs could label the aisles in warehouse 13. |
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Radiation levels beyond this point may exceed 200,000 picosierverts per hour |
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With the current upsurge in biohazard paranoia, whole new opportunities for misleading signage are burgeoning ... |
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'Warning: plants of this type have been known in the state of
California to affect the air's CO2 levels. CO2 is a known
greenhouse gas." |
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Seems like we've done random warning physics signs before
though, somewhere. |
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