21–30 of 283 posts
Odd we never adapted to it. Video has a strange hypnotic power over most people and messages seem to bypass normal mental defenses.
I'd say we did, you need more and more for the same effect. Here is the first ad ever, for a watch : https://youtu.be/ho2OJfXkvpI For comparison, here is the latest ad for the best selling watch as of today : https://youtu.be/kdMTc5WfnkM
Thank you Mr. Farnsworth.
Earlier quoted context omitted.
For what it’s worth, Philo Farnsworth and John Logie Baird were friendly with each other. I was lucky to know Philo’s wife Pem very well in the last part of her life, and she spoke highly of Baird as a person. David Sarnoff and RCA was an entirely different matter, of course…
The article has a photo of a plaque putting Baird's death in 1946, less than 40 years old. What happened?
This is interesting. John Logie Baird did in fact demonstrate something that looked like TV, but the technology was a dead end. Philo Farnsworth demonstrated a competing technology a few years later, but every TV today is based on his technology. So, who actually invented Television?
You should read about the invention of color television. There were two competing methods, one of which depended on a spinning wheel with colored filters in it. If I remember correctly, you needed something like a 10-foot wheel to have a 27-inch TV. Sure enough, this was the system selected as the winner by the U.S. standard-setting body at the time. Needless to say, it failed and was replaced by what we ended up wit…
This is interesting. John Logie Baird did in fact demonstrate something that looked like TV, but the technology was a dead end. Philo Farnsworth demonstrated a competing technology a few years later, but every TV today is based on his technology. So, who actually invented Television?
> but every TV today is based on his technology. Philo Farnsworth invented the cathode ray tube. unless you're writing this from the year 2009 or before, I'm going to have to push back on the idea that tv's TODAY are based on his technology. They most certainly are not.
This is interesting. John Logie Baird did in fact demonstrate something that looked like TV, but the technology was a dead end. Philo Farnsworth demonstrated a competing technology a few years later, but every TV today is based on his technology. So, who actually invented Television?
You should read about the invention of color television. There were two competing methods, one of which depended on a spinning wheel with colored filters in it. If I remember correctly, you needed something like a 10-foot wheel to have a 27-inch TV. Sure enough, this was the system selected as the winner by the U.S. standard-setting body at the time. Needless to say, it failed and was replaced by what we ended up wit…
When the UK (and Europe) went colour it changed to a whole new system and didn't have to worry too much about backward compatibility. It had a higher bandwidth (8mhz - so 33% more than NTSC), and was broadcasting on new channels separate to the original 405 lines. It also had features like alternating the phase of every other line to reduce the "tint" or "never twice the same color" problem that NTSC had
America chose 30fps but then had to slow it by 1/1001ths to avoid interference.
Of course because by the 90s and the growth of digital, there was already far too much stuff expecting "29.97"hz so it remained, again for backward compatibility.
This is interesting. John Logie Baird did in fact demonstrate something that looked like TV, but the technology was a dead end. Philo Farnsworth demonstrated a competing technology a few years later, but every TV today is based on his technology. So, who actually invented Television?
I had a communications theory class in college that addressed "vestigal sideband modulation," which I believe was implemented by Farnsworth. I think this is a critical aspect to the introduction of television technology. https://en.wikipedia.org/wiki/Single-sideband_modulation#Sup...
In the United States in 1935, the Radio Corporation of America demonstrated a 343-line television system. In 1936, two committees of the Radio Manufacturers Association (RMA), which is now known as the Consumer Electronics Association, proposed that U.S. television channels be standardized at a bandwidth of 6 MHz, and recommended a 441-line, interlaced, 30 frame-per-second television system. The RF modulation system proposed in this recommendation used double-sideband, amplitude-modulated transmission, limiting the video bandwidth it was capable of carrying to 2.5 MHz. In 1938, this RMA proposal was amended to employ vestigial-sideband (VSB) transmission instead of double sideband. In the vestigial-sideband approach, only the upper sidebands-those above the carrier frequency-plus a small segment or vestige of the lower sidebands, are transmitted. VSB raised the transmitted video bandwidth capability to 4.2 MHz. Subsequently, in 1941, the first National Television Systems Committee adopted the vestigial sideband system using a total line rate of 525 lines that is used in the United States today.
What strikes me is how fast the iteration was. Baird went from hatboxes and bicycle lenses to color TV prototypes in just two years. That's the kind of rapid experimentation we're seeing with AI right now, though compressed even further.