In this video, I state that the inventor of the telephone is Alexander Graham Bell. It's not actually as simple as that, and so tomorrow, I'm posting a footnote video for this one, to amend the error.
Thank you for this video! ...However, no offense, but why do you sound a bit unenthusiastic or tired? ...Actually your monotone voice might have made it more easy to understand so thank you.
@@rokibalboa840 Sunlight is absorbed and reemitted by the particles in the air (scattered). In our atmosphere, that process is more efficient for shorter-wavelength visible light (the blue end), so when the sun is mostly overhead, that light is scattered to become the ambient around us. When the sun is low to the horizon, its light passes through more of the atmosphere, causing a dissipation of the blues and violets, leaving reds and oranges. The sunsets and sunrises are shifted further to the red end by the presence of small particles in addition to the gases.
Sorry for the slow response (I'm afraid I've been rather busy lately), but thanks for letting me know. I'm currently working on a footnote video to amend the error. If all goes well, it should be up by tomorrow.
Sorry for the slow response (I'm afraid I've been rather busy lately), but thanks for letting me know. I'm currently working on a footnote video to amend the error. If all goes well, it should be up by tomorrow.
Awesome, your video will help me to transform more old phones in vintage hacks. I did a video transforming an old phone into an speaker. This will help me to improve it. Thank you.
I understood most of that . My question is that the man said the voice is converted into digital a string of numbers. Ok I got that but when it is converted back into voice how is it possible to make the voice sound just like the real voice of the person who did the talking ? I wonder about that because right here on RU-vid there are stupid sounding computer voices that are used to do the talking in video's. Most people either skip those vids or seem to comment that the video would have been much better if the voice was that of a real person. Now since our voices are turned into digital signals and back again why then do computer voices sound so odd ? Why do they not at this point sound just like that of a real person ?
The difference is in how these two strings of numbers are created. When your voice is recorded, an arbitrary amount of detail can be preserved. That allows recordings to capture inflections, stressed words, etc. In those videos, however, the words were never spoken. Instead, they were generated by a computer from a bunch of text, and computers (currently) still can't generate all the subtleties that we take for granted in human speech.
Sound waves do carry kinetic energy, which can be converted into electrical energy, but most don't carry very much, and I don't think it would be easy to convert. For example, people have made machines that extract energy from water waves, which are considerably more energetic, but even those machines aren't incredibly effective. Light tends to be easier to use because the Photoelectric effect provides a very direct, non-mechanical conversion (and light is abundant). Photons incident on a photoelectric surface eject electrons ∝ light intensity with kinetic energy ∝ light frequency from the atoms in the surface, which causes a current. In contrast, mechanical energy conversion usually involves moving magnets around to cause current in adjacent wires, which is less direct, and so more lossy. It's also a bit harder with mechanical waves like water ones in the ocean or sound ones in the air because the motion isn't conducted in a constant direction. Mechanical waves are formed from oscillations of the particulae in the medium, with no large-scale movement of the substance from place to place. With wind turbines, the air moves in a constant direction (more or less), which spins the wheel, and so the magnet. With oscillating movement, you get oscillating current in the wires, which has to be accounted for somehow.
I have, in fact, pinned a comment and referenced a footnote video in the title to the end of correcting that error, but it is still irritating, I know. :-/
