Yup, though the $50K was specifically the R&D cost to develop a technique for making the lens. It used a nano-scale pattern on glass to focus light via diffraction, as opposed to standard refractive lenses or mirrors. The ultimate goal was to develop a process for manufacturing these lenses en masse, for deployment in a large particle detector where traditional lenses wouldn’t work. They succeeded, and nowadays (6 years later), they can basically print the pattern using the same techniques as in microchip manufacturing. Back then, though, there was just then one prototype that represented that $50K of research, so I am really glad I didn’t fuck it up haha

In my first year of grad school, I was visiting a colleague’s lab and was asked if I wanted to test some of their new diffractive optics. I said sure and started toying with the big lens on the table, no gloves, no precautions other than trying not to drop/smudge it. After about 5 minutes of geeking out over the fact that a perfectly flat, transparent lens was focusing the light, I asked how much it would cost to get one sent to my lab for an experiment I was working on. He said that it was the only one of its kind in existence, but the manufacturing r&d cost for it was over $50K alone. My heart nearly fell outta my chest.

I am very happy that 75% of my PhD in particle physics was hands-on lab work doing detector R&D. Sure, creating simulations and doing data analysis are immensely important, and skills I had to develop, but I think that many scientists are being done a disservice by not getting the opportunity to see how their work will interface in the real world.

It is the only scent that gives me a headache, and I think its overrated on top of that. Give me a minty, give me pine-y, give me fruity, literally any other scent profile.

That’s not quite fair, a cardboard box has multiple uses, both built and deconstructed. The Brian Thompsons of the world are only useful to society in their deconstructed form.

The assignment was to infodump, so I will take that as a compliment. I was aiming for detailed and hyperspecific.

I’ve seen things. Things you’d never understand. All I can say is that the best dissertation defense is a good dissertation offense. So much blood on my hands…

I am now Dr. Drail, so it went well! This was back in August, so I am still in recovery mode while I job search.

Here goes:

During my dissertation, I was lookig for information on the emissiom of 172nm scintillation light in mixtures of gaseous Xe and CO2 (95:5% - 98:2%), with results being difficult to come by. I found a collaborator who had tested this at lower CO2 concentrations (0-0.5%), but nothing else, no predictions or generalizable applications. Not knowing the optimal search engine terms or what textbook to look in for rules governing gaseous light emission, I ended up looking in fluorescence chemistry papers (my previous field of study) which had something called the Stern-Volmer relation for different concentrations of quenchant in a fluorescent solution. I figured gas scintillation queching was probably similar to liquid fluorescence quenching, but the standard relation didn’t quite fit below 10% additive.

I dug around more and found a modification of this relation for diffusion-limited quenching of fluorescent solutions (the same limitation imposed in gas mixtures, quenching due to random Brownian collisions) that employed an exponential term, allowing for a smoother curve down to low additive concentrations. This perfectly matched the available data and allowed me to model the predicted behavior. I discussed this with the one member of my committee who was available, an organic chemist (my PI was on vacation, everyone else was sick, and my dissertation defense was in 2 weeks). He said my reasoning and math for using this formula made sense and gave me a thumbs up to include this analysis. When my PI came back from holiday, he asked me why I didn’t use some equation generally used in the field, or even just a generic exponential fit. I was ignorant of his suggestion, but it provided the same general formulation as Stern-Volmer, though Stern-Volmer was more rigorously derived mathematically.

Mixing fields is super cool and can allow a much deeper understanding of the underlying principles, as opposed to limiting yourself to one branch of science. While my PI’s recommendation would have given approximately the same answer, understanding and applying Stern-Volmer allowed me to really dig at the principles at play and generate a more accurate and in-depth model, which I managed to write up and defend at the 11th hour.

Fianceé’s dad is a Senior Level Employee and he was told he’d be safe for at least the first 2 rounds of layoffs, but they couldn’t guarantee he’d survive round 3. Expect two more cullings and for them to get increasing severe: if a ~20 year Boeing vet, 40 year industry vet, working the worst hours with the worst people isn’t safe, nobody except the executives are (he is forced to comply with another country’s work hours halfway across the world AND be present in the office for normal working hours).

The SEM+EDS machine in one of my school’s materials labs ran 98 and there was exactly one thumb drive on campus that was allowed to be used if you wanted to pull data. The lab coordinator had to pull the output file to his computer and email them, but made it sound like the biggest inconvenience in the world if you, ya know, wanted your data.

My school gave up on printing/binding theses, so they also gave up on thesis formatting requirements. As long as your advisor approved the thesis and the title page had all the relevant info, it could be formatted however you wanted.

After finishing my dissertation, I spent maybe 20 minutes emailing the library staff about dissertation edits (date format/placement on title page mainly) and otherwise was told any other requested changes were optional so long as my advisor signed off. I have to get my dissertation printed and bound myself, but that is a small price to pay compared to the nightmare that is univeristy thesis format compliance.

What state are you in, if you don’t mind me asking? I just moved from Dallas to Los Angeles and there are Wincos in both, just kind of out of the way.

If one is in your area, Winco is your friend then. 24hr grocery shopping. They are also worker owned and have a great bulk goods selection, so they are a better food shopping experience at roughly the same price point.

My goal for the summer was to finish my PhD. I defended on Friday and am now Dr. Drail, so I actually accomplished my summer task for once. I sacrificed all my sleep and sanity to do so, as I was told at the 11th hour to redo a major analysis that made up 1/4 of my dissertation, but I fucking got it done.

Everything should just be in eV. Particle physics natural units are the best.

The people downvoting you just aren’t ready for a Big-G heavy future. I bet they are doing so with a purposeful grimace and a terrible sound, as they vote your banging godzilla memes down

Blue Oyster Cult guitar fill

I have both ADHD and minor hearing loss that started when I was a teenager (wear earplugs if you frequent concerts and play in live bands, turn the music down on your headphones from max volume). It is a rough combo that led to plenty of awkward situations as an awkward teen.

The worst was when I was on a first date at a SixFlags and my date didn’t tell me she was terrified of rollercoasters. I felt bad, but only went on a few rides without her and spent the remaining time trying to win a stuffy at a carnival game for her, trying to have a good time anyway. She was really really quiet and I was having a hard time with all the stimulus and crowd noise understanding her. Eventually, it got to the point where I was asking her to repeat everything more than once, so I started to autopilot. While we were waiting in line for something, she muttered something and I responded, my brain playing fill in the blanks, “Uh-huh.”

Turns out, when I heard her say “Mumble mumble ride mumble bring mumble with you mumble.” she was not saying, “I really wish I could go on a ride, but I am happy you wanted to bring me with you anyway!”

She was, instead, saying something along the lines of, “It must be so annoying that I haven’t gone on a single ride, I bet you regret bringing me here with you at all today.”

Needless to say, there was no 2nd date. She told me later it was shitty of me to respond like that, and I couldn’t convince her that I just misheard her. Since then, if I can’t understand someone after two tries, I just explain that I have bad hearing and need them to speak up. Asking someone to repeat themselves will always be less awkward than driving her home after that.

I am a physicist. I am good at math, okay at programming, and not the best at using programming to accomplish the math. Using AI to help turn the math in my brain into functional code is a godsend in terms of speed, as it will usually save me a ton of time even if the code it returns isn’t 100% correct on the first attempt. I can usually take it the rest of the way after the basis is created. It is also great when used to check spelling/punctuation/grammar (so using it like the glorified spellcheck it is) and formatting markup languages like LaTeX.

I just wish everyone would use it to make their lives easier, not make other people’s lives harder, which seems to be the way it is heading.

I always hit the one in Garden Grove, it was in a mini vegan plaza. Still a Loving Hut and a vegan pizza place in the same plaza. Never got a chance to go to the Santa Anna one.