Everything posted by John Cuthber
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Naptha Petroleum In home solvent odor issue. Please help me. Thank you to all.
Tanking of cellars is commonplace. It does not usually involve digging round and under the house to tank the outside (where the water is).
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A Simple Arithmetic Teaser !
Then they are unlikely to be in that sentence.
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Extended life of solid state light emitters...
Depending on circumstances, the limiting factor might be something like a capacitor in the power supply. Good temperature control is also a big factor so dropping the power is almost certain to help.
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Naptha Petroleum In home solvent odor issue. Please help me. Thank you to all.
Overpainting bitumen may not work out as planned, you may end up with a sticky mess that never dries properly. Fatty acids don't eat anything. Microbes might, but they would only grow in the presence of plenty of water. I really think the best plan is a fan and patience.
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Naptha Petroleum In home solvent odor issue. Please help me. Thank you to all.
White spirit has a fairly strong smell and it will take a while to get rid of it. If you can arrange the fan to blow air out of the window (and take the smell with it) that will avoid having the fumes in the rest of the house. Leave the door to the room slightly open so the fan can draw air through from the rest of the house. The smell will go quicker if you have warm air drawn through the room, or warm it as it enters the room with a non flame radiator near the door. Soda and vinegar are not going to help here.
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Lightning rods...
One would work if it was tall enough.
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fluoroantimonic Acid
I don't think it is very volatile. It decomposes on heating and gives HF which is ... bad for you.
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A Simple Arithmetic Teaser !
There are several options. Replace all the blanks with "one". Replace all the blanks with ">=1" Replace all the blanks with "unimportant". Replace all the blanks with "less than 99"
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Our perspective of the Sun
Doh. It's me failing to account for BC / AD.
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Our perspective of the Sun
Same way that they did it 1200 years earlier I guess... https://en.wikipedia.org/wiki/Eratosthenes#Earth's_circumference
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Our perspective of the Sun
Debating with a flat earther is probably a waste of time. However, if you are going to persist, ask them to email someone in each to the Earth's two hemispheres and take a picture of the moon and send it to them. One of the pictures will be the "wrong" way up. That can't happen unless they have different ideas of which way is "up" and that requires a non-flat Earth That's very simple, it doesn't need complicated kit and he gets to choose who the Southerner and Northerner are, so he can claim that someone is lying. Another is to ask them to explain the flight times between distant cities. For example, Greenland, India, South Africa and Egypt. That takes a bit more maths.
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Political Humor
It's remarkable. We quite often get memes about Republicans doing really stupid things. When an elderly man who is a Democrat does something eminently sensible- wearing gloves in cold weather- the internet explodes.
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Do psychopaths need to be cured?
Then 4 days ago the thread gainsaid this assertion:
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Do psychopaths need to be cured?
Are children the only people who can't be relied on to give informed consent?
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Problems using bluetooth to check distance between users ?
... and the UK https://covid19.nhs.uk/pdf/introducing-the-app.pdf ... where it works badly
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Do psychopaths need to be cured?
Why not the children? Can't they decide for themselves? As you said
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Do psychopaths need to be cured?
Yes, that's a simple idea. Now, who gets to choose on behalf of children? For example, who gets to choose if babies get vaccinated?
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Do psychopaths need to be cured?
I'm not sure it's meaningful to talk of "curing" psychopaths. But could we please stop electing them to positions of power?
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Nuclear fission
Is there a reason why neither of you said anything about absorbing neutrons (i.e. what the OP asked about)? Anyway, I think the answer is that slow neutrons are generally more likely to be absorbed into the nucleus. e.g https://en.wikipedia.org/wiki/Neutron_capture#/media/File:Neutroncrosssectionboron.png
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Political Humor
And off he went with a Trumpety Trump; Trump, Trump Trump. For those unaware of the original... https://en.wikipedia.org/wiki/Nellie_the_Elephant
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Blow to US Democracy -Split from: U.S. presidential election modelling
Recent... as in since the Civil War, or what?
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is it possible to factor a large number in polynomial time using this method?
Unless rafael returns and explains his wallpaper designs, the answer is no.
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The Official JOKES SECTION :)
Soon to be followed by "I fought the law".
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The Official JOKES SECTION :)
I see Trump has decided to pardon the swamp, rather than draining it.
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Lab rat with mysterious itch
Seems an odd experiment. Was the system sterile apart from the rat dropping?