Since the Higgs field is zero, the weak force particles don't feel mass, and therefore, they can travel at the speed of light, just like the detector . There are two absolutely ginormous detectors at the LHC, one of them called CMS, which is the one I'm on, and the other one is called ATLAS--
But what I really want to talk to you guys about is gravitational waves, and how we are building a galaxy-scale gravitational wave detector . So with that, let's get started, all right?I'd like to start with this image of someone poking their head behind the curtain a little bit.
you can be subjects in one of my experiments now. Um, so here's the blick detector . I put these are, as you'll see, these are different shapes, uh, shaped blocks. Um, but we counterbalancethem, so we'll just use the letters. Um, D goes on the detector three times and nothing happens. E goes on the detector
know, inches thick of lead and lead itself has a radioactive isotope, lead 210, which decays, so in order to protect that, uh, sort of decaying lead from the detector they have another layer of lead which was salvaged from ships that had sunk off the coast of Europe in -- about 200 years ago. So most of that lead,that is old lead, the radioactive isotopes have decayed and they use that to shield the experiment from the new lead and so on and so forth. It's, uh, it's
Anyway, he came to me and complained because the lie detector produced the result against his favor Lie detector , although it is much more precise in these day, has become the field with great expertise Google does research on AI. Do you think the role of profiler or criminal psychologist can be replaced by AI someday?
possible. Men brag and women downplay. And if you hook them up to a lie detector test, and this study has actually been done, the gap all but disappears. And what I find really interesting is that the men's score diminishes a lot
you sweat, there's radioactive elements in your sweat and if it shows up your fingerprint, the detector will pick it up. So you can imagine how sensitive this detector is. So that's essentially what they're building, something that detects nothing. The detectors are, umm, silicones of -- I mean, crystals of germanium and, uh, silicon, they're hockey puck-sized crystals that are put inside this copper tube. This copper tube is ultra pure. Uh, it's, uh, oh.
There was some psychological experiments on us, some astronomy and cosmology. There's a particle detector looking for, essentially, dark matter, which is pretty amazing. They're trying to figure out what the universe is made of.
In that process, did you come out with a favorite? has the scintillating plastic detector .
And what we're measuring about the brightness of the star isn't actually the brightness about the star, it's really just something that's happening on the detector . Also, the temperature control of the detector really matters.
OK, again, what's this got to do with anything? It's just a detector in the machine.
OK, again, what's this got to do with anything? The smaller detector out here is this called the compact muon solenoid, which is not so compact.
And you see them in the middle here of the cleaning cycle and someone back off about 20 or 30 meters who is recording the data The Signs of Life Detector -- I talked a little bit about this.
um so so there when I met him I he was like he was texting and whatever and I atmospheric CO2 detector yeah exactly what would you bring if you're doing the science March what would be your best experiment that would be that would work
Maybe it works on this conjunctive principle where you need a combination of two, sort of logical and to be able to make the detector go. That's a much less obvious and much less likely possibility from the perspective of an adult, but it's not impossible. It could be the way the detector works. Um, and if you saw that sequence of events and
What I'm interested in is the team and what problem they're trying to solve, because the initial solution is usually not the final solution. Being a problem detector means, if you're really good at it-- and I think it's something you can practice, just like you can practice mindfulness-- being a problem detector means you look at all kinds of problems in life.
Being a problem detector means, if you're really good at it-- and I think it's something you can practice, just like you can practice mindfulness-- being a problem detector means you look at all kinds of problems in life. So I remember I gave a lecture on this at Dartmouth Film School.
And he was somewhat familiar with government agents. And his spook detector went off when this guy showed up. And from there, the story got stranger and stranger and stranger.
This plot shows you a collision event producing two photons and caught by the detector where the blue cylindrical area represents the detector , called electromagnetic calorimeter made of tens of thousands of crystals, and the two red bars represent the energy deposit of the photons into the detector .
a human detector , and then a cat, because I guess there are a lot of cat videos.
Infinitely sensitive detector would pick up gravitational waves from all of us moving around.
When they hit a detector , they resolve, and they're, in this case, either horizontally or vertically polarized but they're always the same
And then my gas detector is going ring, ring, ring.
by a metal detector and the way he was going to detonate it was through a
a cl- Santa detector that I found on the web or it's actually just a standard stocking with, you know, a little device here and a ribbon goes across
The Santa detector on Android, which is available if you guys want to look for it, is as you can see of simple, simple negative energy meter. So,
have a euphemism detector . That would be a subject of future research though.
of the telescope's detectors .
And as metal detectors are getting better at finding things, more people are doing it as a hobby, more stuff's being recorded.
And these detectors are going to click half the time for the photon being reflected, half the time for the photons being transmitted.
These particular detectors , by the way, are about 10% efficient.
and some detectors and a lot of spare parts, and brought it up to the check-out.
And metal detectors really just don't do anything for us in that sense.
and with the metal detectors and scanners and and all the default
Even the slightest vibration of the detector would corrupt the measurement, not something that could work on a helicopter or a military drone.
ninety-seven or very large fraction of the speed of light, and then they decay into photons. And so you measure how long it takes for the photon to get to your detector , and it says it's-- light travels at the speed of light. Now, if it were that if Einstein's conjecture was incorrect, you'd have a particle coming out at near the speed of light, it would be decaying into a particle traveling at the speed of light, then that
Since the Higgs field is zero, the weak force particles don't feel mass, and therefore, they can travel at the speed of light, just like the You could take the ATLAS detector , and you could put four of them on a soccer or a football field, and it would fill the field up with just enough room on the
over many pixels in the detector , thereby spoiling our view of the much fainter dots, the planets that might be
And so these are the two LIGO detectors , one in Hanford, Washington, and one in Livingston, Louisiana. There's also the Virgo detector in Europe, and then there are other gravitational wave detectors being built around the world. But this event, gravitational wave event 15/09/14, on the 14th of September 2015, is the first direct detection
Here are lots of our student meeting pictures. And while we build this detector , interesting things pop up.
The brain is a novelty detector .
In that process, did you come out with a favorite? I've decided that scintillating plastic detector is the name of my muse cover band.
You'd have your face detector software, you'd put it on a phone, and you'd be off to the races.
And we will detect things that we otherwise would just incinerate if we have to do pyrolysis and heat it up. The Spanish SOLID instruments-- Signs of Life Detector -- is an immunoassay. I sometimes joke to folks, it's like a 512 home pregnancy test printed on a chip.
essentially are proving or excluding the existence of the Higgs boson. Both experiments have a giant cylindrical detector , thousands of meters in length and half that length in diameter. And a collaboration of thousands of physicists and engineers are all over the world.
represents the detector , called electromagnetic calorimeter made of tens of thousands of crystals, and the two red bars represent the energy deposit of the photons into the detector . The two-photons channel looks for two energetic photons from the Higgs decay.
We actually have a metal detector to check for any foreign objects.
They were actually listening to the detector in the control room when this struck, and it was too quiet to hear.
Here is the full-scale detector .
You can listen to the detector in the control room, and it's constantly noisy and humming.