It's interesting to follow along with this upgrade process for the camera and associated equipment to support it. While watching the cryo camera teardown, I was at first shocked to see the size of the electrical power conductors for such low power. That is, until I realized they need to be that large to minimize heat production in that cold of an environment with low thermal gradients.
@josephcler32994 күн бұрын
You could put the laser array on the dark side of the moon. So it's not pointing at the earth.
@BigDaddy-yp4mi9 күн бұрын
COOL!!!!!!!!!!!!!!!
@BrunoWiebelt12 күн бұрын
why not doing all this in a cleanroom?
@ExperimentalAstrophysics12 күн бұрын
It adds a lot of cost and effort. Doing it in a clean room does reduce the amount of dust that gets on the optics, but this project isn’t particularly sensitive to dust. Our black lab can be used as a clean room, but for this project it’s not critical.
@clifftrader12 күн бұрын
Thanks to KZbin, I am down the rabbit hole to figure out what interference they are trying to overcome with the He-3 cryo upgrade…
@ExperimentalAstrophysics12 күн бұрын
We currently use HEMT amplifies that have a 2 Kelvin noise temp. We are going to add new traveling wave parametric amplifiers that have a noise temp closer to 200 mK, and they have to operate colder - around 300 mK. Our 100 mK stage doesn’t have enough cooling power, hence the He3 upgrade.
@dangotang891813 күн бұрын
Great channel, keep posting- you'll get traction soon!
@bkuker14 күн бұрын
I can imagine the ire of whatever engineer had to re-run all their FEA on the wall of the cryostat after the marketing department asked "hey, can we just have more space for the HPD logo on the side?"
@ExperimentalAstrophysics14 күн бұрын
HPD was a small operation (now owned by FormFactor), so I bet engineering and marketing were basically the same person! They did a really nice job of engineering these ADRs, though - they are very thoughtfully built.
@martinm123119 күн бұрын
What do you think will be the greatest discovery EVER ?? PS -what is the CNC milling machine behind you ?
@ExperimentalAstrophysics18 күн бұрын
Life outside the solar system! The CNC is my Haas TM-1P.
@martinm123118 күн бұрын
@@ExperimentalAstrophysics . Thanks for naming the CNC .I have worked many many machines .From the NC punch tape control to MAZAK CNC with 4th axis. Manual mills - Deckel , Maho , Tos , Hitachi, 5 meter bed mills and many many more over the forty years however my favorite is the HURON NU4 [I have actually STALLED one ] I love milling machines and Grinders but HATE Lathes. As for the greatest discovery it has to be -How to make EVERYONE really really smart . Smarter than even Leonardo di ser Piero da Vinci . No room on the planet for CULT members . The end of MORONS
@charleyhoward459421 күн бұрын
well color me surprised - a realist visionary
@OrIoN198925 күн бұрын
I think the Lazer is S Tier
@thomaskline516426 күн бұрын
How about the nuclear salt-water rocket (NSWR)
@ExperimentalAstrophysics18 күн бұрын
Seems like it would be harder to make work than bombs because you'd have to store and pump nasty super radioactive liquids, but maybe! B or C tier?
@michaelarena493426 күн бұрын
“It doesn’t get you to another star, it gets a copy of you to another star…” picking a fight with philosophers! :)
@moshemazin132614 күн бұрын
Great staff
@peterd969826 күн бұрын
Im just a layman, but I think your list is closer to what I would expect. I forget the exact specification of the problem. Travel in our lifetime for example would rule out a pretty reasonable option of just getting really good at tooling around our solar system, mastering fusion for life support and self-sufficiency, then settling the Oort cloud, converting dwarf planets to ocean worlds under eggshells of ice, then any passing rogue planet and so on. My pet idea* for travel in a human lifespan is some sort of "slightly smart" macron beam directed against a magnetic sail that can also slow you down at the other end... but I was assuming something like those starshot sails could work. In any case each particle has to be able to adjust trajectory by some tiny amount to stay on target over vast distances. *Im not claiming to be the first to have thought of this :)
@Karadjanov26 күн бұрын
Nice video overall but stating that wormholes don't exist is flat out incorrect. There is enough theory to suggest that they are possible. I would have accepted the issues that come with that method which are: 1. How do we create one. 2. Passing safely in and out. 3. Even if we manage to solve the above problems it would still require human activity at both ends of the wormhole which makes it non viable for exploration but perfectly viable for transport between places we have already reached.
@ExperimentalAstrophysics26 күн бұрын
There are a million things in physics where "there is enough theory to suggest that they are possible", and they regularly get published in real journals. I just don't think any of this mathematical speculation is credible. It is very hard to prove something doesn't exist, but I think the only way we find "wormholes" will be in some tortured analogy to quantum entanglement or something.
@Karadjanov26 күн бұрын
@@ExperimentalAstrophysics I agree with what you are saying I just think it is unfair to dismiss something that has not been proven or disproven. The scientific approach requires us to explore every possibility that has not been concretely proven as incorrect.
@antiHUMANDesigns27 күн бұрын
I was thinkng though: Perhaps a solar sail is a good way to slow down when entereing a solar system? That is, a solar drouge parachute.
@ExperimentalAstrophysics26 күн бұрын
Yeah, that’s possible, although at that point maybe aerobraking in the star’s atmosphere would give you a lot more deceleration if your materials can hold up.
@antiHUMANDesigns26 күн бұрын
@@ExperimentalAstrophysics Hahah, yeah, but what materials could ever survive that? Not only is the star too warm, but you'd also get the heat from the resistance, so I can't imagine any material could remain atomic, even.
@antiHUMANDesigns27 күн бұрын
As for wormholes, as I understand it, tehy could naturalyl exist but they aren't possible to create (snce they required negative energy to keep open). The problemis that even if there are those rare natural ones, it's not like they'll lead you where you want to go, so wherever you pop out on the other side, you still need a drive to get you from there to somewhere useful, which is certianly nowhere close by.
@ExperimentalAstrophysics26 күн бұрын
We’ve seen no evidence that there are naturally occurring wormholes. I have a feeling that it would lead to some weird observational consequences like features in the cosmic microwave background, and maybe some high energy (x-ray and gamma ray) observations.
@antiHUMANDesigns26 күн бұрын
@@ExperimentalAstrophysics Exactly,t here is no evidence of rit, but Einstein's relativity allows for them to exist naturally, but not for them to be created. Well, would we see them if they were so small and rare? I don't know how lartge we assume they woudl be, but probably smaller than a planet? Did you hear about how it woudl be possible to create a time machine using a wormhole, but that doing so would also instantly kill you? :P Basically, it'd produce a feedback effect, build up to massive energy and blow up.
@antiHUMANDesigns27 күн бұрын
It would seem to me that an Alcubierre drive makes a much better weapon of mass destruction than a way to travel. As I understand it, it would produce a gravitational shockwave powerful enough to destroy anything in its path, including entire planets.
@ExperimentalAstrophysics26 күн бұрын
Basically the coupling between E&M (which we are good at manipulating) and gravity is so weak that this seems impossible. Where is the mass density coming from? Seems unlikely.
@antiHUMANDesigns26 күн бұрын
@@ExperimentalAstrophysics I heard you need the power of an entire star to drive it. That's of course enough energy to produce a curve in spacetime. Later on, I saw a paper where they explained how you only need about 1/700th as much energy as we thought, but it's still ridiculously much energy.
@CopperCooper42027 күн бұрын
Hey genius guy. If you were smart, aka a subscriber to Issac Arthur on KZbin, you'd know ANY SPACE CRAFT capable of a small fraction of C aka an interstellar engine is also a doomsday weapon that is more powerful than the Tsar bomb. Hence your critique of a 100gw laser being "politically impossible" means by your logic ALL INTERSTELLAR engines are thusly too politically charged to be allowed to exist. Because any craft can simply fly out to Mars, slingshot back, and crash into your enemy's country at a fraction of C with the engines at max thrust. You could wipe out China or Russia end to end with a single ship, can even be unmanned. It's simple Newtonian physics in case you want to look into it. The grand irony of all you scientists is you claim such high IQs yet I'm ever disappointed. You, and every other "well paid genius" have FAILED TO SOLVE THE PROBLEM OF THE 9.8m/s GRAVITY WELL PRISON WE CALL Earth. The hairless ape called "man" still clings to chemical rockets to escape Earth's gravity, a punishingly ineffective and utterly braindead way to attain orbit. Aka, the tyranny of the rocket equation! What do the hairless apes do? Do they make new technology and forsake ancient tools that simple math proves inadequate to explore the stars?? NO! NOT AT ALL! The mighty hairless ape instead creates THE WORLDS BIGGEST CHEMICAL ROCKET! So complete is the genius of the hairless ape that he can conceive of nothing new and unique, "just make it bigger!" The hairless ape screams, his fists overflowing with worthless cotton rectangles. But alas building the ancient rocket bigger didn't work...the hairless apes are proven wrong and the ancient tyrannical chemical rocket does nothing, besides spin randomly,.then explode... so you'll forgive me dear sir for laughing at you both. Two learned men of science listing what engines you'll use to explore the stars when you've got no means to escape your own gravity well. 🫢🤭 Of course, I could tell you how, I've told many. Problem is no one cares, too busy worshipping some hairless ape with a Twitter addiction who scams people for a living. The tragic fate of the hairless ape, trapped in the gravity well by their own ignorance and stupidity. 😅
@commonsense-og1gz27 күн бұрын
Speaking of particle accelerator propulsion, there was a man named Robert Duncan enzmann who envisioned a particle accelerator drive called the “enzmann echolance.” The story behind it is pretty cool.
@ExperimentalAstrophysics26 күн бұрын
I’ll check it out. Quick Wikipedia search seems to be a heavy water fusion rocket, pretty similar to what I mentioned about tokamak with a hole in it.
@commonsense-og1gz26 күн бұрын
@@ExperimentalAstrophysics enzmann had two ships. The first was just called the starship. This was a glorified version of orion. The other was the echolance. You won’t find it on wiki, but you will find it on “the angry astronaut” KZbin channel. He has 3 videos covering it, and has a livestream with the widow of Robert.
@ryangately771728 күн бұрын
Using a fairies graphic to represent negative mass gave me a good chuckle.
@ExperimentalAstrophysics28 күн бұрын
Just because the math lets you put in a negative number doesn’t mean it is possible!
@JimmytheCow2000Ай бұрын
Are you really that high in elevation you need supplemental oxygen while working? Or is it just a precautionary measure?
@ExperimentalAstrophysicsАй бұрын
It's not required by the observatory. We decided to use it since we were doing a lot of manual labor (Michael's iPhone said we climbed 37 flights of stairs at 14000' at the end of the first day) and the two grad students hadn't been to this altitude before. We had a tight window to get things done, and if anyone got altitude sickness it would have been difficult, so it was nice insurance.
@sethmeeker8008Ай бұрын
Those blue crates will outlive every instrument they ship....truly my greatest contribution to the field.
@ExperimentalAstrophysicsАй бұрын
Those things are robust - a high quality purchase.
@aledvirgilАй бұрын
Hunting boxes at the Subaru telescope
@ExperimentalAstrophysicsАй бұрын
They have some very very nice boxes!
@xiaziyna2 ай бұрын
I love this series, please do more. Spicy suggestion: coronagraph tier list
@xiaziyna2 ай бұрын
Thanks, I found this to be very informative.
@daniellegreen69742 ай бұрын
This was a great episode! Looking forward to Hawaii!
@ImogeneRichards2 ай бұрын
Congratulations to jenny for a really cool thesis defence,so that's what it's like!! I wont be in that position myself! But i have an understanding of rf circuitry,and fourier transforms,and i understand basics of fpgas, it was completely comprehendable,many phds talk in greek.. What a diverse skillset,she deserves her doctorate,she put in a hell of a lot of work. Well done her.
@DrakeLarson-js9px2 ай бұрын
Hmmm..... Thanks for this video!.. Does geophysics dark energy evidence from Professor Mary Fowler's PREM chart tweak your, or one of your grad student's interest?? ... Will call... an azimuth-like liquid nitrogen experiment could really compliment Fowler's PREM chart data - and its suggestion of a dark energy discovery!.....again will call in August.
@puppy_cl4ws2 ай бұрын
yippie
@RumiChakraborty-g3e3 ай бұрын
Invent a device that integrated into the human brain that enables us to seamless multitasking, invent a device that integrated into the human brain that activates 100 percent neuron in the human brain,invent a device that integrated into the human brain that provides us a ability to fly in sky,invent a device that integrated into the human brain that prevents overthinking side effects like migraine, heart pain, testestoren level low in male, memory power loss in male,acid reflux etc and invent a device that integrated into the human brain that prevents stress, anxiety, depression side effects like migraine, heart pain,hernia disease chance increase, periods problem, memory power loss,invent a device that integrated into the human brain that prevents late night sleep side effects like migraine, obesity, anxiety,dark circles in eye,low eyesight etc.
@michaelarena49343 ай бұрын
So exciting!
@EvanZalys3 ай бұрын
Is that shop at UCSB? I’ve never seen that monarch before
@ExperimentalAstrophysics3 ай бұрын
That’s my home shop…
@EvanZalys3 ай бұрын
@@ExperimentalAstrophysics Very nice. It's hard to find 10EEs in such nice shape these days.
@ExperimentalAstrophysics3 ай бұрын
I had to give it a lot of TLC. Rebuilt the electronics with a modern DC drive and the entire apron.
@moylecroft4 ай бұрын
Now this is the content I come to KZbin for. Congratulations Dr Smith.
@majidmohammad48204 ай бұрын
Congratulations Dr. Smith 🎉
@trustgurure81084 ай бұрын
I don’t even know why I'm watching this, but i love it 💯
@nullptr4724 ай бұрын
This is honestly one of the most interesting things I've seen in a long time. From the 'basic' principle of the sensor's operation to the signal processing and RF plumbing in between; any one of the topics would be well worth a watch. Inspiring stuff :)
@ExperimentalAstrophysics4 ай бұрын
Thanks! It’s a very fun area to work in.
@harshitkrishna1304 ай бұрын
🎉i love your content
@aledvirgil5 ай бұрын
Funding agencies next
@PiRadiusSquared5 ай бұрын
I heard that snl hottest club reference 😂
@skatheo27165 ай бұрын
as a physics student specializing in cosmology, "astronomy is the study of the universe. Since physics happens in the universe, it is clearly a subfield of astronomy" got me hard
@imacupcake5 ай бұрын
why did i get an ad for this 😭
@ExperimentalAstrophysics5 ай бұрын
We're a pretty new channel, and this video did pretty well compared to our others with about 2200 views in 3 days. KZbin stops showing our new vids after about 3 days, so I thought I'd experiment with the build in KZbin promotion tab, which has a "Audience Growth" setting. So for about $25 buck the promotion generated about 150 views... basically an epic fail. Decent experiment, 2/5 stars, would not do again.
@DrBrianKeating5 ай бұрын
It's funny because it's true lol
@sploofmcsterra47865 ай бұрын
I'm convinced that most of Quantum information is founded upon the most powerful feature of quantum mechanics: a heap of buzzwords that generate limitless funding, and will confused Big Tech VIPs but assure them you must be very smart and visionary indeed.
@ExperimentalAstrophysics5 ай бұрын
There is something interesting there, but the hype is very powerful.
@CueVoid5 ай бұрын
Yes please make a astrophysics tier list. It will be helpful as i want to pursue astrophysics as my major :)
@Classical7415 ай бұрын
You speak truth: Physics is a subset of astronomy, as are cosmology, astrophysics, asteiroseismolgy, astrobiology, cosmo chemistry and the like. This is a welcome change to the last decades of these sub-sets of astronomy being presented as somehow domains of physics. None of astronomy is experimental. Or, more correctly, all of it is. Astronomy is one of the Natural Sciences like geology, biology, anthropology, etc.
@blinkblink22555 ай бұрын
As a biophysicist... when I heard S tier... HELL YEA! But can guarantee there's not as much money as on that photo!
@ExperimentalAstrophysics5 ай бұрын
I guess the grass is always greener!
@douglasstrother65845 ай бұрын
Jenny is an "Old Crow". (EW reference.)
@douglasstrother65845 ай бұрын
Spent time doing experimental Condensed Matter Physics, magnetic stuff, in Academia. I've been frolicking through electromagnetic fields as a Microwave Engineer for 20+ years.
@ExperimentalAstrophysics5 ай бұрын
I spend a lot of my time doing microwave engineering - like our readouts: kzbin.info/www/bejne/mZ6mpGmdm6pknJo
@douglasstrother65845 ай бұрын
@@ExperimentalAstrophysics That looked pretty slick! Superconducting microwave resonators & filters, then Space-qualified TWTAs were my jam.
@thecaribbeanbookworm50665 ай бұрын
Loved this! I would definitely love to see that astro tier list. I do agree that biophysics and quantum information seems to be the best places to be (objectively). But I can still hope that one day we’ll find those supersymmetric particles (at this point high temperature low pressure superconductors are more likely though 😅).
@ExperimentalAstrophysics5 ай бұрын
I hope so too - I really feel for these guys, but so far supersymmetry is a super disappointment...