748 karma · joined August 1, 2019
But the one that is most intriguing IMHO is the mediterranean sea event that happened but it is 6M years ago. Could ancestors of genus Homo have passed that story long for all that time even across speciation???
https://www.uu.nl/en/news/first-direct-proof-of-mega-flood-i...
There are no technical impediments to high fidelity audio because of amplitude modulation. In the past the big limitation was the bandwidth of intermediate frequency (IF) amplifiers in the receivers which were typically tuned for maximum gain and not flat audio band response. The transmitters have flat response out to the legal limits. Radio stations have a monitor receiver that has proper IF audio response and the sound of those are very good.
A quick history of this work is contained in this thesis by Charles Eric LaForest.
http://fpgacpu.ca/publications/Second-Generation_Stack_Compu...
Forth is not a language. It's an extensible instruction set. You like RISC. Are 31 instructions "RISCy" enough? :-)
I have wondered what Chuck's CPU designs could have become if they had been given more financial and intellectual support at the level that we see for the dominant machines in the world.
Chuck's first CPU NOVIX 2000, performed multiple instructions per clock without pipelining, Interrupt handling in 2 clocks, sub-routine calls in 1 clock and return was 0 clocks on many instructions. That was done with a ridiculously small number of gates.
In later years Chuck realized that a dogmatic use of only the data stack was not ideal and he added an a address register and a loop counter register to make the machines faster.
It would be cool to see someone carry these concepts forward to see what's possible.
Religions after that time separated humans from the rest of the animal kingdom and provided the justification we needed from a "higher power".
Marketing is the key to business success. (Talking to you, tech people)
There exists, mostly in the northern tribes (Ojibwa 27%, Sioux 15%) mtDNA of the X type. As I understand it the other highest group in the world is the Druze population in the Levant. (27%) What it all means is above my pay grade.
Background https://en.wikipedia.org/wiki/Haplogroup_X_(mtDNA)
I have read that many (most?) of the victims of the 1918 flu pandemic did not die from the virus, rather the virus weakened them to the point where pneumonia bacteria took hold in their lungs. With no recourse to antibiotics many did not survive the bacterial infection.
This sounds like how my great-grandfather died. It was reported that he contracted the flu and was sick for two weeks but began to recover, then relapsed and died. Sounds like a bacterial secondary infection after a viral infection.
I gave a 6 session course to a homeschool coop on the History of Technology starting from stones and moving through bronze age, iron age, steam power, electricity, telegraph demo (big hit) radio and TV and early computers.
(I think Engineering schools should have a course on tech history)
You're welcome.
Narrow band FM is used for aircraft. police, fire, amateur radio communication and since 2021 it's even legal for CB radio in the USA. It's deviation is limited by law to about +/-2.5KHz, from centre frequency.
Setting up the modulation depth on an a broadcast FM exciter, I have used a spectrum analyzer and Bessel function information to make sure it was legal.
The modulation scheme is not the reason for propagating around mountains and bouncing off the ionosphere at night. The reason for that behaviour is the low frequency used. 540 Kilo-herz to ~1700 Kilo-herz. (I was told once by a young engineering colleague that 1,000 Khz was not RF. :-))) )
So the question is valid. FM could be used in the "middle-wave" band. It would reduce noise but might suffer more when bouncing off the ionosphere at night. (I have read this but never heard FM bounced)
The reason FM is not used in the middle-wave band is legacy regulation not technology.
111001111011110010000011000111101111110111111101100 ok
CONSTANT X ok
ok
HEX X U. 18F7EFEC okDECIMAL X U. 418901996 ok
8 BASE ! X U. 3075767754 ok ok
I give up. What does this number represent?
https://www.amazon.ca/Technofeudalism-Killed-Capitalism-Yani...
To me the 20th century leaders completely failed to understand the immensity of the changes brought by information tech and so failed to use the legal tools available. The anti-monopoly laws were only applied to Microsoft, as I recall, around the browser/Operating-System combination. That showed they had little understanding of the big picture IMHO.
So they missed that one, imagine how badly they are going to miss the AI revolution...
<pessimist> Cheaper would also mean less revenue generated by ongoing symptom control medication. (Asthma inhalers for example: ~$13.4B global 2021, CAGR=20% !!)
There is less business incentive these days to prevent or cure disease from what I can see. We have prevented a lot of the really big diseases that scared the hell out of people in history. (with some notable exceptions)
Today a cured person is a lost consumer to a pharmaceutical company.
The only solution to that issue, that I know of, is some form of government incentive to artificially subvert the natural market pressure but that is distasteful in free-market countries and money "invested" in political campaigns can "motivate" politicians to steer clear of those waters.
</pessimist>
"Did you know you can save $27.00 if you build your own refrigerator?"
The response of a twisted pair was pretty good over 2 to 4 miles as I recall but for a audio grade (50Hz to 5000Hz) various techniques were used that at the simplest involved coils but there were also active equalizers available for long haul circuits and/or "hi-fi" requirements. Remember DSL lines were/are shipping 1..2Mhz carriers over those same old telco lines. :-)
Of course some old trunk lines used paper insulation. Really. Which meant noise went up ... when it rained.