CD News.....GLASS CD's

F1nut

Interesting development in CD's, glass!

http://www.glasscd.com/

BTW, the price in US Dollars works out to about $800.00. :eek:

heiney9

Is it Windex safe?

hearingimpared

Well I better gather my millions so I can replace all my LPs and CDs with the glass. hMMMMMMMMM what happens if you drop it? or hand it to your wife and it touches the engagement ring? or it gets too hot?

amulford

It would actually be a great thing for the truly historical recordings. I mean stuff like they are digitizing in the Smithsonian. No worry about corruption and crap like that they worry about now. But it would have to come WAY down in price for consumer appeal. They need to figure a way to mass produce it.

Shizelbs

Is glass stable at the spin speeds in CDPs?

Loud & Clear

Too extreme tweaking

Dennis Gardner

Loud & Clear wrote:

Too extreme tweaking

Hilarious!!!!!!! I wonder how it will take green marking pen on the edges?

BlueMDPicker

Shizelbs wrote:

Is glass stable at the spin speeds in CDPs?

Who ya' gonna' call? Myth Busters!!

heiney9

BlueMDPicker wrote:

Who ya' gonna' call? Myth Busters!!

Only if Kari is part of the experiment

unc2701

http://www.fhmus.com/articles-1276.asp

you're welcome.

RuSsMaN

I just messed my pantaloons.

reeltrouble1

Just some glass to tickle your ****

said Barnumum Bill the Sailor.

RT1

F1nut

RT1 has been at the rum......LOL

mldennison

amulford wrote:

It would actually be a great thing for the truly historical recordings. I mean stuff like they are digitizing in the Smithsonian. No worry about corruption and crap like that they worry about now. But it would have to come WAY down in price for consumer appeal. They need to figure a way to mass produce it.

thats a good thought! anyone know who keeps the master recordings of "dark side" or "sgt. pepper" for example? it would be a big loss if in 50-100 years we have some technology that blows SACD away but they are stuck re-mastering the redbook version...

Emlyn

Interesting, but I don't see the point of putting 16 bit linear PCM recordings under glass when 24 bit technology is available. The technology seems to borrow the idea of replicating the glass master disc instead of transferring what's on the glass master disc to aluminum/polycarbonate/acrylic found in most commercial CD's. It would be a shame if someone bought a glass CD and played it back on a transport that has polished plastic mirrors inside.

reeltrouble1

OK, no more sauce for me, I have to get working on my new earthquake proof rack to hold these babies, I will target California.

RT1

heiney9

F1nut wrote:

RT1 has been at the rum......LOL

Rumming and rolling, I'd assume

organ

That looks great. I can see special recordings being released on the new disc first, and as it becomes more mainstream, hopefully every disc will be released on glass cd's.
Will these things shatter if dropped?

F1nut

organ wrote:

Will these things shatter if dropped?

I have no idea, maybe it's safety glass.

jmwest1970

I don't see how they could last forever since technically glass is a liquid. Have you ever looked at original window panes in an old house?

hearingimpared

jmwest1970 wrote:

I don't see how they could last forever since technically glass is a liquid. Have you ever looked at original window panes in an old house?

The windows in old houses are usually scratched from the wind blowing little, minute pieces of debris over time against it. I wonder if it is some kind of superglass or if it is coated with something that protects the outer glaze. In any case I can't afford the offering now at $800 a pop.

heiney9

I'm pretty sure when they say recorded from the "glass master" they are talking about music archived on glass of some sort..........perhaps like this or similar.

H9

amulford

I think they digitized it from a master tape and tranfered it to disc ala burning, just like you would do for a regular disc. The difference is the glass is ultra pure and perfectly translucent, which makes for no refractions, diffraction or unwanted reflections due to impurities normally found regular CD's.

F1nut

jmwest1970 wrote:

I don't see how they could last forever since technically glass is a liquid. Have you ever looked at original window panes in an old house?

Glass, when heated becomes molten, it is not a liquid. With reasonable care it should last forever. The old glass you refer to looks as it does because they didn't have the technology that is available today and has been for many years.

BobMcG

F1nut wrote:

BTW, the price in US Dollars works out to about $800.00. :eek:

$851.78 to be exact as of today.:eek:

DarqueKnight

jmwest1970 wrote:

I don't see how they could last forever since technically glass is a liquid. Have you ever looked at original window panes in an old house?

From Wikipedia Article On Glass.


"Glass as a liquid--One common misconception is that glass is a liquid of practically infinite viscosity at room temperature and as such flows, though very slowly, similar to pitch. Glass is generally treated as an amorphous solid rather than a liquid, though different views can be justified since characterizing glass as either 'solid' or 'liquid' is not an entirely straightforward matter [3]. However, the notion that glass flows to an appreciable extent over extended periods of time is not supported by empirical evidence or theoretical analysis.

A myth does exist that glass rods and tubes can bend under their own weight over time. To check it, in the 1920s, Robert John Rayleigh, son of the Nobel Prize winner John William Rayleigh, conducted an experiment on a 1 metre (~39 in) long, 5 millimetre (~3/16 in) thick glass rod, which was supported horizontally on two pins with a 300 gram (~0.66 lb) weight in the middle. Apart from the initial bending of 28 millimetre (~1.1 in), the position of the weight did not change until the end of the experiment, which lasted for 7 years. At the same time, another man, a worker of General Electric named K. D. Spenser, conducted a similar experiment independently. Two months after Rayleigh, he published his own results which also disproved the myth. Spenser suggested that the myth was composed before the 1920s, when the tubes were made by hand, and naturally some of them were curved to begin with. Over time the straight tubes were taken away, and only the curved ones remained. Some people probably thought it was the glass flowing.

There is no clear answer to the question "Is glass solid or liquid?". In terms of molecular dynamics and thermodynamics it is possible to justify various different views that it is a highly viscous liquid, an amorphous solid, or simply that glass is another state of matter which is neither liquid nor solid."

"Behaviour of antique glass--The observation that old windows are often thicker at the bottom than at the top is often offered as supporting evidence for the view that glass flows over a matter of centuries. It is then assumed that the glass was once uniform, but has flowed to its new shape.

The likely source of this belief is that when panes of glass were commonly made by glassblowers, the technique used was to spin molten glass so as to create a round, mostly flat and even plate (the Crown glass process, described above). This plate was then cut to fit a window. The pieces were not, however, absolutely flat; the edges of the disk would be thicker because of centrifugal forces. When actually installed in a window frame, the glass would be placed thicker side down for the sake of stability and visual sparkle. Occasionally such glass has been found thinner side down, as would be caused by carelessness at the time of installation.

Mass production of glass window panes in the early twentieth century caused a similar effect. In glass factories, molten glass was poured onto a large cooling table and allowed to spread. The resulting glass is thicker at the location of the pour, located at the center of the large sheet. These sheets were cut into smaller window panes with nonuniform thickness. Modern glass intended for windows is produced as float glass and is very uniform in thickness."

Emlyn

DarqueKnight wrote:

There is no clear answer to the question "Is glass solid or liquid?". In terms of molecular dynamics and thermodynamics it is possible to justify various different views that it is a highly viscous liquid, an amorphous solid, or simply that glass is another state of matter which is neither liquid nor solid."

I wish we had a clear answer to this question, because every CD player I've had has had an instruction manual telling me to keep liquids away from the player.

organ

F1nut wrote:

The old glass you refer to looks as it does because they didn't have the technology that is available today and has been for many years.

Today's glass have extreme tweaking. I hope it don't blow up... eh, I need some more tape....:p .