I have an undergrad degree from UCI and a graduate degree from UCLA, both in chemistry. All lower division chemistry courses are taught by Ph.D.-holding faculty. Only discussion sections are led by graduate students.
Professor Rowland taught freshman chemistry up to his winning the Nobel Prize, and may still do so. I heard Professor Luiz Alvarez taught freshman physics at UC Berkeley after his prize.
IIRC Boeing did fly a 747 SP delivery flight from Seattle to Johannesburg, South Africa, however far that is (12000 or so miles?) with pre-cooled fuel and multiple crews. It was in the Guinness Book of World Records as longest unrefuelled flight, until eclipsed by Voyager.
Spectroscopists use ultrafast experiments for the same reason photographers use fast flashlamps: to capture the action, unblurred. But the motion of water, one of the most labile molecules around, is too fast, and there is argument (at least there was in the mid-90s, when I was going to seminars) about how meaningful the ball-and-stick models of water clusters were. Was it a real geometry, or an average over the time of the laser pulse? Apparently, arguments continue over this.
There are other systems where the molecules in a cluster can't move much, due to a higher degree of mutual interference than is the case with water. So the cluster models are more believable.
New-hire engineering training, called "Engineering Bootcamp," contained material from the certs, so engineers could set up boxes for dev and test and have a basic understanding of IOS.
The microwave source in a home oven has a frequency roughly one order of magnitude too low for rotational resonance, IIRC. But dielectric heating does come into play.
Perhaps I'd be more impressed by your comments, were it not for my own experience.
I sent out a number of resumes in which the cover letter was written especially for that position, explaining how my wide experience fit their needs. Few, if any, of these could be bothered to send out more than a generic reply. Why should I waste my time, when I can, in essence, buy more lottery tickets with a generic resume and cover scatter-shot far and wide?
I had a tech (embedded systems) civil service job out of college (UC San Diego) in 1982. This was during a bad recession, and the IBM PC was too new to have many programming jobs associated with it.
This can get you the currently quite-valuable security clearance, which you can take with you to a defense contractor.
Laser collimation has to do with the geometry of the gain medium and the mirrors that form the oscillator cavity. In a linear oscillator, there is a fully reflective mirror, a cylindrical gain medium, and a partially reflective mirror, all on the same axis. Light that is even a little bit off-axis won't escape from the partially reflective mirror, and this makes the laser light collimated.
You can have collimation without lasing, for example gamma radiation.
It does happen here, just not often. I recall one sparkling clear night in Mill Valley where there were so many stars, it was more like being in the high mountains.
There was a tragic fire in Walnut Creek, CA this week. A backhoe hit a jet fuel line, opened a 1" hole, which at 1000 psi (roughly 70 atmospheres) sprayed out, with fumes spreading horizontally. Nearby welding triggered an explosion. The fire burned for hours, destroying most of a nearby house and forcing evacuations of the adjacent buildings, including two schools. There were 3 deaths, 2 presumed dead (possibly blown to bits) and 5 injured.
Hydrogen would have spread vertically, there would have been far less fire damage.
Slashdot Mirror
I have an undergrad degree from UCI and a graduate degree from UCLA, both in chemistry. All lower division chemistry courses are taught by Ph.D.-holding faculty. Only discussion sections are led by graduate students.
Professor Rowland taught freshman chemistry up to his winning the Nobel Prize, and may still do so. I heard Professor Luiz Alvarez taught freshman physics at UC Berkeley after his prize.
IIRC Boeing did fly a 747 SP delivery flight from Seattle to Johannesburg, South Africa, however far that is (12000 or so miles?) with pre-cooled fuel and multiple crews. It was in the Guinness Book of World Records as longest unrefuelled flight, until eclipsed by Voyager.
Different scale, for one thing...
Spectroscopists use ultrafast experiments for the same reason photographers use fast flashlamps: to capture the action, unblurred. But the motion of water, one of the most labile molecules around, is too fast, and there is argument (at least there was in the mid-90s, when I was going to seminars) about how meaningful the ball-and-stick models of water clusters were. Was it a real geometry, or an average over the time of the laser pulse? Apparently, arguments continue over this.
There are other systems where the molecules in a cluster can't move much, due to a higher degree of mutual interference than is the case with water. So the cluster models are more believable.
PowerPC? Not MIPS?
I never understood this insistance on "perfectly qualified".
It's cost minimization, the lazy way.
New-hire engineering training, called "Engineering Bootcamp," contained material from the certs, so engineers could set up boxes for dev and test and have a basic understanding of IOS.
They already had some functions there when I was with Cisco a few years back.
Sandstone series test shots Yoke and Zebra are cited as containing a highly enriched uranium core. These were not staged designs.
On the other hand, Sandstone series test shot Xray was mix of highly enriched uranium and plutonium.
Yes, and there were many other tests. Go to Wikipedia and look up "Nuclear Testing."
My information on an all U-235 implosion bomb came from Richard Rhodes' history, "Dark Sun."
IIRC there was one all U-235 implosion bomb early on.
The microwave source in a home oven has a frequency roughly one order of magnitude too low for rotational resonance, IIRC. But dielectric heating does come into play.
Plutonium has several solid phases, and IIRC 1 or 2 have a negative coefficient of expansion.
Do you have a source for this claim?
Perhaps I'd be more impressed by your comments, were it not for my own experience.
I sent out a number of resumes in which the cover letter was written especially for that position, explaining how my wide experience fit their needs. Few, if any, of these could be bothered to send out more than a generic reply. Why should I waste my time, when I can, in essence, buy more lottery tickets with a generic resume and cover scatter-shot far and wide?
Are these IT jobs only, or are there oilfield simulation positions available?
I had a tech (embedded systems) civil service job out of college (UC San Diego) in 1982. This was during a bad recession, and the IBM PC was too new to have many programming jobs associated with it.
This can get you the currently quite-valuable security clearance, which you can take with you to a defense contractor.
Not hydrogen, but a Hummer H2, the big SUV.
Laser collimation has to do with the geometry of the gain medium and the mirrors that form the oscillator cavity. In a linear oscillator, there is a fully reflective mirror, a cylindrical gain medium, and a partially reflective mirror, all on the same axis. Light that is even a little bit off-axis won't escape from the partially reflective mirror, and this makes the laser light collimated.
You can have collimation without lasing, for example gamma radiation.
It does happen here, just not often. I recall one sparkling clear night in Mill Valley where there were so many stars, it was more like being in the high mountains.
Better view, IMHO, but I'm partial to Mt. Tam and the coast around Bolinas.
Tuscon, along with the whole southwest border region, has also had one hell of a drought for five years. Is military spending there down?
Like, say, San Francisco? Oh, wait...
John Forbes Nash
There was a tragic fire in Walnut Creek, CA this week. A backhoe hit a jet fuel line, opened a 1" hole, which at 1000 psi (roughly 70 atmospheres) sprayed out, with fumes spreading horizontally. Nearby welding triggered an explosion. The fire burned for hours, destroying most of a nearby house and forcing evacuations of the adjacent buildings, including two schools. There were 3 deaths, 2 presumed dead (possibly blown to bits) and 5 injured.
Hydrogen would have spread vertically, there would have been far less fire damage.
No 7 track tapes or punch cards (all formats, not just 80 column)? Newbie... :)