RCA, Princeton, Columbia University discussed on TechStuff



Fifty lines. So RCA shows of this technology in nineteen thirty nine the company also broadcast. The first televised baseball game on may seventeenth nineteen thirty nine. It was between. In Columbia University and Princeton. I don't know who won. I didn't look it up. But it was all done on a single camera, which I imagine created a somewhat limited affect for watching it on TV especially considering that at the time you needed a whole lot of light to get a good picture on these on these televisions because the cameras were limited early television. Broadcasts were tricky in general, the camera technology like I said required a whole lot of light to create a strong enough signal to send out to TV's and a lotta light meant that television personalities actors newscasters that sort of thing they were all pretty much exclusively white people at that time, they would appear washed out on screen because they had so much light on them to deal with that the actors would often have to wear dark makeup frequently green makeup, it would show up better. And remember all TV's at this point are black and white sets. So. No, one knew that the people were all green because they're seeing a black and white image of the actors newscasters at cetera would often also wear black lipstick. So that their lips would actually be visible onscreen early. TV sales were a little slow. The nation was still climbing out of the great depression, and it wasn't expensive new technology and another event meant that the entire industry would be put on pause for several years and that little event would be World War Two. Now, if you listen to my last episode, if you haven't you should you know that the first World War was what led to the formation of RCA in the first place World War Two would slow down the consumer electronics business, but RCA wasn't put into mothballs and storage. They weren't struggling. Instead, the company opened up the RCA research laboratories in Princeton, New Jersey, and for years, the company had relied upon its close association with General Electric for our D. But now it could pursue its own research with its own facility with I think one hundred twenty five scientists when they first opened up and much of that early research would be dedicated to the war effort on the part of the United States are CA would develop a smaller version of its icon a scope for the military. The iconic scope was the television camera tube that Zora can had developed. So I describe how the cathode Ray tube worked in a effort to display images the account. The scope was how these images were initially captured to be transmitted to a television. And it's an element that has a particularly peculiar shape. It would be inside the television camera. I've seen the shape referred to as a barrel shaped bulb and an angled neck and there were a couple of different versions of the scope that did not take that particular shape, but most of them dead. I do not think I can adequately. Describe what this looks like I don't I don't think it's within my powers of description. So I suggest if you are interested in seeing what these things look like because they're kind of funky. Looking you go onto an image? Search and look for icon of scope, I see in O S C O P E because they do look pretty unusual. So they consisted of a few parts. One part was called the target. This was the area of the iconic. Nope. That would receive the focused light coming for the camera's lens. All right. So you've got a scene in front of you. Let's say that it's a news seen. There's a desk a news anchor. You have very bright lights shining on that scene. And that light is some of that light anyway is traveling through the camera's lens, and it gets focused onto the target the targeted self has an array of photosensitive dots on it or pixels. If you like, and they would end up generating a different voltage based upon how much light was hitting them an electron beam would sweep across the target the electron beam is generated by an electron gun. That's in that angled neck, I had explained about just a minute ago. So you get this proportional. Current flow from the dots based upon how much light is hitting them and the electron beam sweeps across this, and then it would send this signal out through to an amplifier for transmission to television receivers that would then reverse this process..

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