I got my PhD at Stanford. There were a few things that made me choose it over others. First, there are effectively 3 physics departments, between physics, SLAC, and applied physics (which is a different program, but still the resources are there. This gives you more choices in what to do. And the rotation system is good for trying labs and fields out before you make a decision.
I don't know much about your field of focus, so I can't speak about potential advisors too much.
The control is daylight, where countless species of life survive on a daily basis. You are comparing the hypothesis that life can survive with very little light to the hypothesis that it needs normal amounts of light to survive.
My impression is that there are a lot of geeks out there who want the Star Trek holodeck, and they see VR and generative AI as a way to get there. But they ignore all the episodes that explored the ways such a technology could be harmful, socially and psychologically and physically.
The "cold copper" accelerator technology is really neat, in my opinion. The way particle accelerators work is that they pump RF through waveguides into cavities, such that the electric field pushes on the electrons right as they enter the cavity. Historically, they've been built with geometry like cylinders and rectangles where the fields can be worked out analytically, and that can be fabricated easily. They're proposing using modern computational modeling techniques to design better cavity geometries that can then be fabricated with modern CNC techniques. That should allow more efficient accelerators and higher acceleration gradients.
I don't remember it that way. I took it more more as being about the definition of "fish", and demonstrating that whalers don't think about things the same way that non-whalers do. It's not ignorance; he acknowledges repeatedly throughout that whales breathe air, and nurse their young, and other mammalian traits.
I don't think it's anything so interesting. The FM band starts at the round number of 88.0 MHz and ends at 108.0 MHz. To divide that evenly into 200 kHz channels without bleeding over the ends of the band, they have to be centered at the odd decimal points.
There's no climate scenario in which Mars is more habitable than Earth. Even if a Texas-sized asteroid crashed into Earth, Earth would still be more habitable than Mars.
> Taking a public asset and reserving it for exclusive use by certain individuals is not right: Thats a fancy way of saying: parks are not campgrounds. These types of policies are plain wrong, and cities should know better by now.
How do you reconcile this with the existence of private property at all? The lands of the planet earth were not formed with deeds attached.
I think it's at least plausible that ADHD traits could have been useful in the hunting and gathering environment humans evolved in. Being more inclined to pay attention to new things in your environment might make you more likely to discover threats and new food sources. Being able to hyperfocus might be useful if you are practicing persistence hunting and following prey for hours. These traits become a "disorder" because they're not as well suited to capitalist modes of production.
I keep a daily log where I scribble down some basics of what I did that day. At the end of the week, I go through that, consolidate it into a few things I did that week, and add it to a git repo.
When I need to do performance reviews or something, I read over those summaries. A few bullet points per week is manageable enough that I don't try to condense it further, but I do use them as inputs when I'm doing performance reviews or updating my resume.
2016 might be the most clear one. Hamilton and Rosberg were both driving for Mercedes. In 2021, Hamilton nearly won it in his Mercedes despite Red Bull having the better car for most of the season.
The thing is, the teams putting in the money and effort to build the best cars also want to hire the best drivers. I don't think it's too surprising that the best drivers in the best cars get the best results.
There is an autonomous racing league now. You can watch races on YouTube. The cars don't go nearly as fast, and they're much more prone to boneheaded mistakes than human drivers. It wouldn't be safe to have them race against humans. But I do expect them to improve.
In Vernor Vinge's A Deepness in the Sky, ships in the far distant future are still counting time from the Unix epoch. The common belief in the novel, though, is that it's measuring time from when humans first became space-faring by walking on the moon. But I don't recall it mentioning that there's any attempt to account for relativity; ships all keep their own local time.
It doesn't have the volume or the variety that HSC did, but there's still a variety of stuff there. It's free except for the $3 parking, and it's easily worth that for all the interesting things you stumble across.
It has struggled to find a venue for a few years, bouncing from De Anza College to the Sunnyvale Fry's parking lot, to skipping a couple years due to covid, to the Sunnyvale Library parking lot (cancelled after once due to neighbors complaining), and now maybe settling in to West Valley College. Hopefully it will stick around.
No, the comment you're replying to is confused. These gyroscopes are entirely used for determining Hubble's orientation. Reaction wheels effect the actual rotation, and Hubble's are fine.
I think the confusion is a result of imprecise language talking about how they are used to slew the telescope. They are "used" but as feedback, in conjunction with other systems. Also, there have some prominent reaction wheels failures on other missions, and that contributes to the confusion.
I got one for the winter, and it was fine for getting a little extra exercise. Now that it's summer, I'd rather go outside.
I found I could only really use it when I was watching something on the screen. Watching videos was fine, and so were meetings if I didn't have to have my own video on. The motion was pretty distracting for other people.
Trying to do any work while on it was difficult. I could do a little if I went at a much slower pace than my normal speed. Even then, the static electricity would build up, and I'd get zapped after every time I took a break from touching the desk.
My assumption has been they do that when the shipment is damaged or lost. And that they haven't implemented any sort of automatic refund or reship because some percentage of people don't notice, and that reduces Amazon's losses.
Do you drink alcohol in the evenings? Alcohol has a sedative effect at first, but your body compensates and so you'll tend to wake up when the alcohol wears off, rather than when you're fully rested.
I've walked out of an interview when the employee doing it took a phone call in the middle of it. It was so rude and disrespectful.
I once got a whiteboarding problem and proposed a solution, and the interviewer gave me a flat out "that's not the one I had in mind". I'd already asked clarifying questions and thought my proposal was reasonable in light of the constraints as I understood them. After a few minutes of trying to play mind reader, I asked, "Is there some constraint or requirement I'm missing?" and they said no. I retrospect, I should have walked out on that one, too. I still have no idea what they wanted from me. Communication goes both ways.
My experience has been that "spin off" CEOs are often there only so they can check a "CEO experience" box in the hope that it will help them climb higher in the larger corporation. This leads to all sorts of bad decisions and a pretty miserable environment because they don't actually care about building something that will be successful and endure. They only care about speedrunning the experience they think a CEO needs so they can talk about it when interviewing for something better.
Gravity can be modeled as "things on the earth's surface accelerate downward at about 10 m/s², regardless of their mass". This works very well. Gravity can be modeled as "planets orbit the sun according to Kepler's laws". This also works very well.
Newton realized that these phenomena could be explained as arising from the same underlying process of an inverse square law. This is a much more useful model, and allows predictions that allow us to do things like space flight, even if it is not complete.
I used to work in neutrino physics, and I will consider myself lucky if I see a detection of the cosmic neutrino background in my lifetime (roughly the next 50 years).
The more interesting one was the Klapdor-Kleingrothaus claim of observing neutrinoless double beta decay in germanium 76 in the early 2000s. That was a major impetus for the generation of double beta decay experiments like this that ran in the 2010s. The MAJORANA experiment used the same isotope and was significantly more sensitive, and pretty thoroughly excluded the half life Klapdor-Kleingrothaus claimed.
Yeah, they didn't observe the decay, but set lower limits on the half life of the decay, which translates into upper limits on a neutrino mass. Next time will mostly involve getting more germanium 76, but also improving the techniques they use to beat down backgrounds.
That was Starlink. The satellite tracking app I have predicted it pretty much perfectly. There was a launch out of Vandenberg early Wednesday, just after midnight. My guess is that it was so bright because the satellites haven't really started dispersing yet.
When counting photons, the noise in your signal scales with the square root of the total count. If the satellite is dumping 100 ± 10 photons in every pixel it passes through, you can no longer distinguish objects so faint that they'd only leave 10 photons in a pixel during your exposure.