Viewing profile — aj7

He was proof that the position is a figurehead.

I like the system. Every single time I talked to the human, and explained that the Times wasn’t worth the “regular” price, back came a much lower one.

“It made me feel powerless.” Your problem. Read some of Michael Porter’s books on competition. In an economic interaction, all players compete with each other. The Times thinks it’…

It took Apple 42 years to kill the pc, but they did it.

The late Harold DuBose use to use the 555 as a power inverter as it could sink 200ma at the laser companies he worked for. Convenient and cheap.

I should add that analytical device applications of this technology look almost limitless, being able to simplify, shrink, and cheapen thousands of optical instrumentation types. T…

Just want to remind people that the deBroglie wavelength of light IS its wavelength, here 0.5-1.5 um. This is gigantic compared to that of electrons in semiconductors. So there is …

The problem is right in the prologue. “Every piece of evidence we have for objective reality is itself a subjective experience.” But people do independent experiments. And the resu…

Iran recites a carefully curated list of American and Gulf States technology targets. 500,000 Nvidia GPU’s are one implicit bullseye.

I wonder if it is a PhD thesis to prove that the data prefiltering doesn’t bias the results.

The late Harold DuBose of Spectra-Physics, repeatedly used 555's as power inverters in the electronic design of a frequency stabilized ring dye laser. He liked the strength of the …

What would be most interesting is using optical illusions to help decode how brain visual processing is done.

In Israel, virtually every Christian relic is fake. Some are hundreds of years old, but nevertheless fake. This is not a comment on Christianity as a religion. Religions need relic…

All good advice above. I’ve tapped 1000’s of holes and haven’t broken a tap in 50 years, and I have nothing to add to the above. Berkeley Physics Dept. student machine shop trainin…

And in a similar vein, you can’t learn much about investing without actually risking some capital.

Try buying a compact Toyota pickup without the extra row of seats. The last one was made in 2015. They sell for more than the price of new for mileage < 100k.

I’m an optomechanical engineer and I’m sorry. I’m not impressed. In a Michelson, the single most important requirement is that the optical path lengths of the two arms do not drift…

Look up “beam expanding telescope.”

I have found that my best designs, few and far between, enter a period where they get simpler as they are completed. And my worst or failed designs keep getting more complex as I g…

I did my calculus homework on the subway.

Arrays that actually make sense!

Isn’t that an AWS outage?

Notice that this makes great sense macroeconomically. So you are warned: you will get the healthcare you demand, in addition to that which you pay for. And a certain amount of gami…

This is a hugely important point. The de Broglie wavelength of the photon is hundreds to thousands of nm. There is no possibility of VLSI scale-up, a point conveniently omitted in …