I am using a Twistorr Agilent 74fs Turbo with a vent valve kit attached to it (https://www.agilent.com/store/en_US/Prod-9699844/9699844) as a part of a system that cools a coldhead to ~1K. This should ...

I’m thinking of building a CRT (I believe it can be done), but I’ve hit a snag.I am planning on using either a 1000 mL or 2000 mL Erlenmeyer flask made out of borosilicate glass (Pyrex) for the tube. ...

I'm not sure if this would be more befitting of Bio.SE but I feel members of Phys.SE would be better placed to answer this as it may or may not be answered in research for safety in environments which ...

I'm trying to calculate the reading on a voltmeter connected to the following set of batteries, where each battery is of $1.5$ volts. These batteries are NOT rechargeable, so I'd really appreciate it ...

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 ...

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....

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...