On Monday, September 28, 2015 at 6:38:53 PM UTC-4, Jim Wilkins wrote:
We? Who the hell are you talking about "we". Radar was invented by a Scot
(Robert Alexander Watson-Watt). Honestly, I don't even know if he ever eve
n visited the United States. Radar like research was going on in several c
ountries. The US was not a pioneer in this area.
The budget devoted toward this field was still practically nothing relative
Cell phones and cars were practically nothing budgetary-wise. And weaponiz
ed versions of this stuff? Practically nothing.
A lot of it wasn't even pioneered in the USA. So maybe militaries of other
nations had higher budgetary devotion, but certainly not here in the United
We? Who the hell are you talking about "we". Radar was invented by a
Scot (Robert Alexander Watson-Watt). Honestly, I don't even know if
he ever even visited the United States. Radar like research was going
on in several countries. The US was not a pioneer in this area.
The budget devoted toward this field was still practically nothing
Cell phones and cars were practically nothing budgetary-wise. And
weaponized versions of this stuff? Practically nothing.
A lot of it wasn't even pioneered in the USA. So maybe militaries of
other nations had higher budgetary devotion, but certainly not here in
the United States.
===========The Great War had ended all major wars, remember? We wouldn't be
needing a military for more than minor police actions. Pacifists
controlled Depression spending.
Actually it was Watson Watt's assistant Arnold Wilkins who invented,
built and demonstrated the first British radar in February of 1935.
The US Navy beat them, although since radar was kept top secret by all
of its nearly simultaneous inventors it wasn't known to be a race.
"In December 1934, the apparatus was used to detect a plane at a
distance of one mile (1.6 km) flying up and down the Potomac. Although
the detection range was small and the indications on the oscilloscope
monitor were almost indistinct, it demonstrated the basic concept of a
pulsed radar system. Based on this, Page, Taylor, and Young are
usually credited with building and demonstrating the world's first
The British system transmitted a continuous wave and inferred
direction to the target by measuring the return's phase difference at
two antennas, the same way our ears tell the direction but not
distance of a sound source. A second receiver and antenna pair
elsewhere gave an intersecting vector and crude estimate of range. The
Germans investigated it and concluded it was something other than a
radar, since it didn't work like theirs.
"...the British disclosed the technical details of the Chain Home
early warning radar stations. The British thought the Americans did
not have anything like this, but found it was virtually identical to
the US Navy's longwave CXAM radar."
The British didn't invent computers all by themselves either.
At Mitre I had a working replica of a ~1932 German microwave aircraft
detection radar on my desk. I haven't found any mention of it online.
US jet engine development began earlier than is generally known, too:
"Price started work on his own turbojet design in 1938,..."
Radar hardware of one design and a good one was developed in the UK.
Western Electric was assigned to take it and make Ship radar and then
Air radar. The design team was in Bell Labs, my dad was on that team.
He later went to Carolina to put it into production. He retired as a
director of R&D in Field Engineering and had a heavy dotted line back
to Bell Labs. He spent his last 6 months in the Labs completing his
design documentation on his last monster Radar.
The US worked on radar at the same time, but didn't have a working model
as clean as the UK. The UK design went to both Naval bodies of the UK
and USA. It was critical for the shipping between the US and the UK.
Later it was shown to be instrumental in many a battle in the Pacific.
The Magnetron tube that was provided was an R&D design by the UK. It put
both of us ahead in shipboard radar to fight planes and subs.
On 9/30/2015 4:46 PM, firstname.lastname@example.org wrote:
The magnetron tube was an American invention:
The British contribution was to extend its frequency response into the
US experimental microwave radars of the late 1930's used Klystron
tubes, which took longer to fully develop.
That article mentions that magnetrons had poor frequency stability.
British electronic genius R. V. Jones wrote that they could classify
unknown transmissions as British or German by observing their
frequency stability. Typically German field gear was as good as the
best British laboratory instruments.
(Amazon.com product link shortened)
What's missing is that Raytheon invented the manufacturing process that
made it practical to make magnetrons by the tens of thousands. Without
this, radar would have remained a lab curio.
My dad used Klystrons you could unbolt a plate and climb inside (in a
RAD suit) change the filament climb out and pump down. They were 6
meters tall. Short ones :-)
Magnetrons, a high tech type, was / is used on a B-52. It has some
special features that isn't on the typical unit. About the size of a
boot box. I taught Semiconductor Electronics to the B-52 Design team
so they could design the F-111B. And they did. It was a bit weird to
be teaching someone twice ones age solid state devices. Thankfully I
knew tubes and related their place in the solid state designs. They
took to design faster that way and we got into the mathematics as well.
A long time ago.
On 10/1/2015 6:24 AM, Jim Wilkins wrote:
EMP bombs. Nasty. Destroys electronics.
Rail Guns. Basically a linear accelerator that shoots a projectile
at a high rate, electrically driven by electronics.
On 9/28/2015 4:37 PM, email@example.com wrote:
You can shoot the moon and get the reflection. It is all in the quality
of signal beam. It is parallel light.
They were developed for subs to shoot out an optic and cut the waterline
or hit the magazine. All sorts of tricky stuff.
These are not the simple ones you hold. These are large units.
I knew a guy working on them in a puff plane. That type. They used
a 707 since they were cheap and could use newer engines for more power.
The coolant tank was baffled to prevent waves while flying. The baffles
broke down and the plane was having problems with shifting center of
gravity. Kinda dangerous.
Battle ships were fitted as well.
On 9/25/2015 8:40 AM, Ignoramus32266 wrote:
On Fri, 25 Sep 2015 07:49:05 -0700 (PDT), firstname.lastname@example.org wrote:
No, it hasn't. Fiber lasers of that capability (from IPG) just became
available about four or five years ago, and weaponizing them into
something that really works has only been possible for a couple of
I had a couple of green cars -- British Racing Green. d8-)
Yes it has. "The first laser was built in 1960 by Theodore H. Maiman at Hu
ghes Laboratories" (wikipedia), this makes the technology at least that old
If the military had placed the majority of its funding into that program ve
rsus others, then the technology would be far more advanced by today.
On Fri, 25 Sep 2015 08:38:24 -0700 (PDT), email@example.com wrote:
I built my first laser in 1965, with a synthetic ruby rod given to me
by Dr. Herb Elion of Princeton University, who did pioneering laser
research for the US Navy.
I research and write about lasers every month. The company that makes
the laser weapon power sources for the US military, IPG Photonics, is
one I'm in contact with every week. I know what they can do, and I
know the specific laser power heads that the Navy and Air Force are
using in their weapons. I'll be watching their newest ones at work in
These devices are made with diode-pumped lasers that have fiber
amplifiers. They're good for around 10 kW each, and the weapon
development comes from ganging them up and focusing them together. The
Navy weapon is 30 kW. The next step is to get them up over 100 kW.
They aren't there yet. And that will not be nearly enough to knock out
The recent developments have been with lasers that have a wavelength
on the order of 1000 nm -- near inrared. Most high-powered lasers have
wavelengths that are reflected by shiny or polished surfaces. The
output of the fiber laser, currently the hot ticket in laser cutting
machines for fabricators, is absorbed by shiny surfaces. That
combination of power, compactness, and wavelength is what makes the
laser weapons possible. This is all fairly new technology.
The technology comes from a transplanted Russian company that is now
based in the US. The diodes that power these things are the product of
US, Japanese, and Russian technology.
You do go off on speculative tangents, mog.
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