Questions tagged [laboratory-safety]
The laboratory-safety tag has no usage guidance.
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Need help with SMRs and nuclear reactors [closed]
I'm writing my IB extended essay on SMRs and how they might be useful for energy generation in Singapore but I don't quite understand a couple things.
How do their passive safety systems work and ...
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Does the Host Rock of This Mexican Hyalite Show Signs of Uranium Minerals? I Previously Cut It and Am Now Concerned
I previously cut a Hyalite specimen from Zacatecas, Mexico. Using a Geiger counter, I measured a slightly higher level of radioactivity on the cut surface compared to the environment. Although I know ...
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Would the use of LIPC's for Lasers avoid eye damage for bystanders?
Laser Induced Plasma Channels (LIPC) can create a tunnel of plasma in the air for a brief moment (milliseconds). But the formation of a LIPC is a process and not something instantaneous when it comes ...
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What does 0 volts mean for a Van de Graaf generator?
I am trying to understand how two different definitions of zero-voltage reconcile in the experimental setup of a Van de Graaf generator, or at least how I understand that it is being described.
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Is it safe to heat completely sealed vacuum container for a long long time?
I am currently making vacuum fryer, and was wondering this question.
Normally, when you apply heat for a long time in a completely sealed container, the gas will expand, and pressure will be built and ...
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What is the size of the beryllium in the Demon Core?
The Demon Core is covered by a hemisphere of beryllium. The Demon Core reaches criticality when the beryllium is completely closed. To achieve this, the size of the beryllium must be adjusted so that ...
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Laser safety of standard laser pointer diode [closed]
I am thinking about designing vector display with standard pointer laser diodes. I would make display be diffuser of some sort like milky glass or paper, but I want to make it see through, rather than ...
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Evaporation time for a Mercury-Ball
How long does it take for a Mercury-Sphere to evaporate, if it has a diameter of 1mm and the temperature is 25 Degrees Celsius and the air moves at a speed of 1km/h over it?
What would the formula for ...
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Using grams instead of kilograms in terminal velocity equation
I am conducting an experiment verifying the relationship between terminal velocity and other factors:
$v_t = \sqrt{\frac{2mg}{\rho AC_d}}.$ (All values in SI units.)
Suppose that I have all my ...
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Is it safe to keep uranium ore in my house?
I bought 5.6 gr of uranium ore.
The measured gamma radiation is 1µSv/h, we didn't have the instruments to measure alpha/beta radiation.
EDIT:
The gamma radiation was measured at 1cm distance. I also ...
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Fresnel lens safe viewing distance
I work for a summer camp, and we have a Fresnel lens that is roughly 18in x 24in. I'm writing a safety document for the device, and am attempting to find out the minimum safe viewing distance without ...
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Laser line safety
I'm a researcher at University Federal of Santa Catarina Brazil and I work with lasers.
I'm looking for information about how to calculate the Nominal Ocular Hazard Distance (NOHD) to a laser line and ...
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Is it dangerous or safe to use a black/dark cloth cover on a propane tank? [closed]
Say I have a standard 20lb propane tank.
I want to put a protective cover over it, to shelter it from weather.
Can I use a cover that is black or dark colored? Is that dangerous or will it put me at ...
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Is it dangerous to put a pressure cooker under cold water after cooking?
After cooking using a pressure cooker, it usually takes a while for the pressure to be released and for the cooker to be opened. However when I think the food may have been slightly overcooked, I take ...
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Why connect plug wires in a certain way when polarity changes in AC anyway? [duplicate]
In AC systems the two wires of a circuit alternate polarity many times per second. So positive and negative switch, half of the time a wire is positive the other it is negative.
So why is it ...
