Ciro Santilli @cirosantilli 40

Using de novo DNA synthesis to synthesize a genes to later insert somewhere.

Note that this is a specific application of de novo DNA synthesis, e.g. polymerase chain reaction primers is another major application that does not imply creating genes.

A different and more elegant way to express Maxwell's equations by using the:instead of the:

Free to view draft: web.physics.ucsb.edu/~mark/ms-qft-DRAFT.pdf Page presenting it: web.physics.ucsb.edu/~mark/qft.html

Author affiliation: University of California, Santa Barbara.

Number of pages: 616!

Don't redistribute clause, and final version by Cambridge University Press, alas, so corrections will never be merged back: web.physics.ucsb.edu/~mark/qft.html. But at least he's collecing erratas for the published (and therefore draft) versions there.

The book is top-level organized in spin 0, spin half, and spin 1. Quite ominous, really.

The preface states that one of its pedagogical philosophies is to "Illustration of the basic concepts with the simplest examples.", so maybe there is hope after all.

cyclotrons produce the better images, but they are expensive/you have to move to them and order a timeslot.

Lab-based just use some X-ray source from the lab, so it is much move convenient e.g. for a pharmaceutical company doing a bunch of images. The Wikipedia image shows such a self-contained lab system: en.wikipedia.org/wiki/File:Freezed_XRD.jpg

How atomic clock works? answer by Ciro Santilli on Physics Stack Exchange.

www-thphys.physics.ox.ac.uk/people/AndreiStarinets/sr_mt_2022.html (archive) contains 2022 problem sets and notes, well done Mr Andrei Starinets!

This is one of Ciro Santilli's most important principles.

Steve Jobs has a great quote about this. He's totally right on this one!

Decide your goal first, and then do whatever is needed to how to reach it.

Don't start randomly learning tech, because that means you will waste a lot of time learning useless stuff.

There is of course some level chicken-and-egg paradox in this, as highlighted by Dilbert, since choosing an achievable goal in the first place requires some level of technical understanding.

However, it is much more common that people will get way too involved in learning useless stuff and lose sight of the useful end goals.

Rather, take an iterative approach:

There is some truth to the counter argument that "but if you don't spend a lot of time learning the basics, you can never find solutions".

However, these people underestimate your brain. The brain is beautiful, and human intuition is capable of generating interest towards the things that are actually useful to reach your goal. When you feel like learning something related to your goal, by all means, give yourself the time to do so. But this still be much more efficient than just learning random things that other people tell you to learn.

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