TELECOM Digest OnLine - Sorted: Re: Direct and Indirect Military Spending

Re: Direct and Indirect Military Spending

T (nospam.kd1s@cox.nospam.net)
Thu, 12 Apr 2007 17:47:54 -0400

In article <telecom26.99.11@telecom-digest.org>, siegman@stanford.edu
says:

> In article <telecom26.98.9@telecom-digest.org>, T
> <nospam.kd1s@cox.nospam.net> wrote:

>> I know of one device where Bell was instrumental, and that was
>> centimeter and millimeter RADAR. The British may have invented the
>> magnetron, but Bell invented the MASER.

>> That MASER btw spawned the 802.11G wireless system I use. Let's not
>> forget the earlier development of the transistor, or the later
>> development of the ruby LASER.

> Charles Townes, Columbia university faculty member, invented and built
> the first man-made maser/laser device of any type (mm-wave ammonia
> maser oscillator/atomic clock), at Columbia, in 1951-1954.

Townes was a Bell Labs alum.

> Nico Bloembergen at Harvard invented the microwave solid-state maser
> (first one with any potential usefulness in radar) at Harvard in 1956.
> Bell Labs built first working version that same year, not long after
> hearing of/seeing (advance?) copy of Bloembergen's initial
> publication.

> First succesful (ruby) laser was invented and operated by Ted Maiman
> at Hughes Research Labs, Malibu in 1960, pretty much totally
> independently of (and to the substantial surprise of) the ongoing East
> Coast and Bell Labs efforts to make a laser.

> Second and third lasers (both solid-state) were made shortly
> thereafter by Sorokin et al at IBM Yorktown. Bell Labs the fourth
> (but first gas) laser just at the very end of 1960.

> <http://www.stanford.edu/~siegman/cleo_plenary.pdf>

Most of the inventors of those devices got their start at Bell Labs.

Post Followup Article Use your browser's quoting feature to quote article into reply
Go to Next message: T: "Re: Stranger's Phone Line Active in Apartment"
Go to Previous message: hancock4@bbs.cpcn.com: "Re: Comcast Going All-Digital"
May be in reply to: hancock4@bbs.cpcn.com: "Direct and Indirect Military Spending"
TELECOM Digest: Home Page