John Cuthber
Resident Experts-
Posts
18385 -
Joined
-
Last visited
-
Days Won
51
Content Type
Profiles
Forums
Events
Everything posted by John Cuthber
-
You can make sure the copper/ steel connection is somewhere dry. But that's not the point. The "man from the council" probably won't accept it. It doesn't agree with the standards, there's no guarantee that the wire won't get broken, and eventually, the zinc will all corrode away, and then you have no protection. It's no use saying " but I will look after it". The council knows that you will die (and you may well move house before that). The new owner of the property may not understand how your system works.
-
OK, I contend that it is impossible to find two integers a and b with no common factor, such that a^2 /b^2 = exactly 2 That impossibility was old in medieval times. But you, presumably, can find them. Come back when you have them.
-
Can the area be calculated by integration?
John Cuthber replied to DimaMazin's topic in Analysis and Calculus
I suspect you will get more help if you draw a diagram. -
Diabetes and fasting
John Cuthber replied to invasion's topic in Anatomy, Physiology and Neuroscience
This website (along with many others) only has one piece of advice. Consult a doctor. -
How to apply high voltage and high frequencies?
John Cuthber replied to DARK0717's topic in Engineering
If you can make an AC motor work then you already have oscillating current What are you trying to do? -
How to apply high voltage and high frequencies?
John Cuthber replied to DARK0717's topic in Engineering
Oscilloscopes do not generate oscillations. What "thing"? The same thing as eachother, or the thing that you mistakenly thing oscilloscopes do? They still get used sometimes for high voltage switching- because they are simple and cheap. They are inefficient, noisy and need regular maintenance. Yes, thyratrons, thyristors, triac, triggertrons, transistors, relays etc. It's impossible to know which options would be good without knowing what you want to do. It is one type of spark gap; there are others. -
Anyone good with patterns (calculations?) here?
John Cuthber replied to Lord Antares's topic in Analysis and Calculus
OK, Thanks for the explanation. I must be missing something. Imagine I work out some pattern. Imagine that I somehow know that "reallyValuableName.com" has a 99.999 % chance of dropping out of use at noon on some particular day- let's say some time in the new year to give us time to act. I might want to register it- but so will my competitors. Like me, they can see "what's coming up" and, unlike me, they have enough money to win a bidding war. How can I hope to win? -
The freezing point of butane is -140C. That's 40 degrees colder than the worst bits of the antarctic. Butane didn't freeze in the pipes. The difference in boiling points is significant.
-
Anyone good with patterns (calculations?) here?
John Cuthber replied to Lord Antares's topic in Analysis and Calculus
Really? You had to ask? Our willingness to help would depend on that. -
I'm from the UK The same thing happened years ago. I asked them where they got my name from. The answer is this https://en.wikipedia.org/wiki/Electoral_roll#United_Kingdom And it's public domain data. Anyone can go + read it
-
How to apply high voltage and high frequencies?
John Cuthber replied to DARK0717's topic in Engineering
Does this help? https://en.wikipedia.org/wiki/Tesla_coil#Resonant_transformer -
The last one I saw was 700 atmospheres pressure about 30 litres capacity and made from carbon fibre and resin.
-
Anyone good with patterns (calculations?) here?
John Cuthber replied to Lord Antares's topic in Analysis and Calculus
Your view of "good" and mine (or Donald Trump's) may not tally -
It seems the EU had to remind the Jehovah's witnesses what "good" is. https://www.reuters.com/article/us-eu-data-jehovahwitnesses/eu-court-says-jehovahs-witnesses-must-comply-with-data-privacy-laws-in-door-to-door-preaching-idUSKBN1K01LJ
-
I watched the vid. A man takes a Geiger counter down to the beach. The count rate goes up. (I just saved you all a bit over 7 minutes; I hope you are grateful). None of the post makes any more sense in the context of the video than without it..
-
No Baking soda is sodium bicarbonate. Baking powder is a mixture of baking soda and an acid- traditionally potassium bitartrate. Saying "Baking powder and baking soda is (the most of time) the same thing" like saying vodka and water are the same thing because vodka has water in it. Does this help? https://www.thekitchn.com/the-most-magical-egg-replacement-and-how-to-use-it-234588
-
And if that assumption is invalid...?
-
I hope to win the lottery. I think my odds are roughly the same as yours. I have never bought a ticket. The best you can hope is that people think your formula is interesting.
-
No.
-
Do you have any idea how wrong that is? Everything (as a whole) is slowly, but definitely getting more chaotic. https://en.wikipedia.org/wiki/Second_law_of_thermodynamics