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11:11 AM
@SirCumference Why did you delete that message?
 
 
7 hours later…
5:45 PM
0
Q: Math career - is it a good idea to use ADHD medication to improve research concentration?

Shuheng ZhengSorry if this might be off-topic or "sketchy". I really love reading and studying mathematics in my undergraduate and attained top grades in my year in a top university in Canada. But I didn't display any super talent. For example, I did badly on the Putnam and was never able to reach the Putn...

 
 
3 hours later…
8:30 PM
A milestone paper on feedback amplifiers is R. D. Middlebrook, “Measurement of Loop Gain in Feedback Systems,” Int. J. Electronics, Vol. 38, no. 4, pp. 485-512, 1975.
It contains the following suggestion (emphasis mine): "[...] a wave analyzer such as one of the Hewlett-Packard 302A series is a very convenient instrument for use [...]".
I find it amusing the presence of such an endorsement, when usually nowadays people tend to put disclaimers everywhere saying that they don't endorse the equipment used.
 

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