how tech works recs

[iceprincess]

are there any good resources that explain how tech works? i don't understand how telephones or radios or cell phones works and i really want to understand how the hell i can call someone from all the way across the world. is there any good youtube channels or series or books that properly explain the physics behind these concepts

[LastThursday]

Fundamentally most telecommunications is based on light, electricity, computers and materials technology.  But each of those things in themselves are huge areas of physics and engineering. I'm not sure there's any one channel that covers all those things, it really depends on how much depth and technology knowledge you're after. 

For example this video covers Maxwell's Equations which are to do with electromagnetism (light):

But that might be too much information?

Anyway, any of the science channels I posted in my journal will be of interest to you (towards the bottom of that page):

I short you'll have to look around for stuff that matches the level you're interested in.

Edited February 25 by LastThursday

[WikiRando]

https://learn.saylor.org/course/index.php?categoryid=9

Saylor academy has free computer science courses. Even though I took only a few introductory courses to satisfy my own curiosity and personal learning, just that alone was instrumental in getting to the core of the history and what the hell modern technology (esp computers) actually is. 

Would recommend

Edited Saturday at 06:26 PM by WikiRando

[kavaris]

Yeah you gotta back way up and ask what you mean by technology. Theres devices like phones, then theres older things like radios that ppl start with to learn about electronics, and beginner components (going through and understanding *what makes a radio, physically*)

p.s. radiowaves is another area to look up...

Theres alot to get into just by going in that direction; Alas, theres also the nature of electricity and electrical frequency waves, and then the application of electricity within devices and such...

This could get you into things like amplitude, frequency, wavelength, period — as well as voltage, current, power... watts... things like this.

Its hard to know what you mean by the term physics behind how they work..

In the realm of modern components, they usually involve digital circuits, 0's and 1's (now and days its like liquid, in how tiny its getting) and that process of emulating tiny circuits requires many layers, semi conductor lithography for the fabrication process.

Theres also the electrons, and the sub atomic reaction, and understanding that whole area of circuits. This term "circuit" and "transistor" have a symbiotic relationship now nd days, and so youd have to understand what both terms are referring to. Usually a transistor has 3 parts, and then the subsequent *circuit* is made up of that transistor... but a circuit can also include resistors, and other wires and such... that then gets into the architectural/design nature of these circuits in the context of electronical component(s)/devices...

Now if you mean how devices are programmed, thats yet another road to learn about, and it gets into an area that rivals the complexity of the aforementioned areas. And so, you have all these different areas that you could mean just by asking a simple question, and it means writing down what exactly you want to learn, and consider that, to understand everything youd have to know a little about each area. But practically speaking, you wanna pick one to start w/, and then work your way up or down or both.

Edited Sunday at 06:40 AM by kavaris