Why did Scotty need the Aluminium to be transparent? why was the transparency of the Aluminium so important that he invented transparent Aluminium earlier than it should have been? I understand the need to build a tank but they only really needed something to hold back the water to keep the whales in the tank. Why was transparency so important? did he really go to all that trouble just so he could visually see the whales in the tank? Also why Aluminium? why not use a sheet of Titanium, it would have been stronger and they could have used a thinner sheet.
Transparent Aluminum needs to be transparent, for when it is not, it's not Transparent Aluminum but standard Aluminum.
Ah, but we 20th century humans would have a use for its transparency. Scott was willing to trade the secrets of aluminum's transparency for what otherwise would have been a very expensive metal or plexiglass fabrication order. Remember all they had to trade for cash was Kirk's eyeglasses. In the grand scheme of things a few extra inches from the plexiglass is nothing next the massive volume of the enclosed tank. At least Gillian can check on the health of the whales more easily if the tank is see through. Perhaps the whales were clausterphobic. Spock would know having mind melded with them.
You're not telling me the BoP couldn't just take off to a builders yard and beam up a large sheet of metal.
Well, maybe "transparent aluminum" isn't really aluminum. Every few months, someone posts an item online about "Hey, they've invented transparent aluminum!" -- which really just means that some other newswriter or blogger has come across the existence of alumina glass, a strong variety of glass that's based on aluminum oxide (alumina, aka corundum and emery) rather than silicon dioxide (silica). It's a ceramic rather than a metal, and it's only in the past few years that scientists have figured out how to make alumina ceramics transparent rather than opaque -- essentially making a very strong variety of glass which has potential applications as transparent armor. Of course, if this were the substance in question, Scotty would've known better than to call it "transparent aluminum," because alumina isn't aluminum any more than water is hydrogen or salt is chlorine. But aside from the name, it seems like a pretty good match for what was in the movie. They didn't need metal for the whale tank, they needed a strong armor material that would withstand the mass of all that water suddenly being beamed into it. So maybe we can pretend that Scotty was really saying "transparent alumina."
I thought he was trading the secret of transparent aluminium for six inch thick plexiglass. I don't think he was expecting them to make the aluminium then and there. Besides Nichols said it would take him years to figure out the 'dynamics of the matrix'. It's been 23 years, how long does he need?
Hmm, I just looked over the script, and you may be right. I always assumed that they needed something stronger than Plexiglas and were arranging with Nichols to make it for them. But that is a good point about Nichols saying it would take years to figure out. And I guess the box hanging from the helicopter looks more like it's holding something six inches thick than one inch thick. Hm. You learn something new every day.
Exactly. They used the available, thick Plexiglas to make the tank walls. They did not use transparent aluminum for the tank. Scotty used the formula for it to trade for the material that was available and needed. Since Plexicorp (right name?) makes Plexiglas, then they would be interested in something like transparent aluminum. Scotty knew that.
No, he meant years to work it out as in it would take years to work it out without Scotty giving it to him in advance. Scotty made it clear he needed something strong and only a certain thickness and that in the year they were in there was nothing that was strong enough without it being too thick. Remember when Scotty and McCoy told that plexiglass guy what they needed the guy said they couldn't make plexiglass that strong so small which is precisely why Scotty gave him the information for transparent aluminium.. That's what I have a the beef with, he COULD have used a sheet of pure metal and it would have sufficed but he wanted it to be transparent which is why he had to invent Transparent Aluminium early.
A ten foot tank would only have a water pressure of some 19 psi (131 kPa). Maybe some engineer can chime in on how much plexiglass it would take. I am assuming Scotty's tank is 10'x60'x30' in order to get his 18,000 cubic feet (50,9703 L)figure.
That's what I believed until a few hours ago. Then I reviewed the actual lines from the script and realized there are some unverified assumptions in that interpretation. Nobody ever actually says that they need something stronger than Plexiglas, not in the script, anyway. And the discussion of the relative strengths of Plexiglas and transparent aluminum takes place within the context of Scotty offering something to Nichols. So this morning, I would've agreed with your interpretation, but now that I've heard another interpretation and considered the details of the scene, I think I was wrong. I mean, think about it. Even if the formula Scotty gave Nichols was all that he needed to know, there's no way that equipment designed for making Plexiglas, which is a synthetic polymer made of carbon, oxygen, and hydrogen and formed into sheets either by casting liquid methyl methacrylate or extruding and homogenizing solid pellets of same, could be adapted to make transparent alumina armor, which is a ceramic made of aluminum, oxygen, and nitrogen and is produced by various arcane, specialized techniques. Plexicorp would've needed to manufacture whole new equipment to make the formula into reality. There would've needed to be extensive tests and calibrations of that equipment to make sure it was capable of doing the job. They would've had to train technicians to work the equipment. They would've had to run through multiple test batches to fine-tune the equipment and their skills until they got it right. Even given all the information they needed, it would've taken weeks at least to produce usable results. But Kirk's crew was in the 20th century for only a few days. So I was wrong. I made an assumption that, I'm sure you'll agree, is reasonable enough to draw from a cursory recollection of the scene, but that doesn't hold up to further analysis. The whale tank was made of Plexiglas, and Scotty paid for it with the formula for transparent alumina/um. Whales are pretty much neutrally buoyant, otherwise they'd sink. That means their density is approximately equal to the density of the water they displace.
The whales would displace a volume of water equal to their mass. The effect on the tank would be the same if it contained only water or two whales and a lesser amount of water.
It's funny but I was watching this on Wednesday (just got back from surgery and has it waiting for me from Lovefilm) and it was the first time I felt that it was a trade. The above section of the script suggests that it wasn't Transparent Aluminium they were after. There is a very brief scene when the sheets are being lowered into the tank where you see one being put into place without the wooden crate and it's clear that it is several inches thick. http://movies.trekcore.com/gallery/albums/tvh/ch13/tvh0712.jpg
I agree. Scotty traded the transparent aluminum formula for the Plexiglass he needed. There's simply no way that a 20th century manufacturing facility could, even with all of the instructions on how to do it, be converted to produce transparent aluminum and turn out the product in less than 24 hours.
Why do people have so much trouble with this aspect. The guy at Plexcrop says himself that it'd take years to figure out the matrix of TA. Yet so many think that Dr. Nichols whipped up this futuristic material overnight oh, and, that when we see it it is WAY thicker than one inch. Scotty sold Nichols/Plexicorp the formula for Transparent Aluminum in exchange for the the plexiglass he needed and possibly even the use of the helicopter.
I never really thought of it being an exchange until I read this thread and then I popped over the Memory Alpha to see that they'd been working under the same conclusion in their articles as well.
Maybe Nichols/Plexicorp did invent Transparent Aluminum and Scott was just part of the closed time loop?