Altera MAX 10 evaluation board is probably one of the cheapest options. You use quartus prime lite to configure it which is free, and better than the equivalent Lattice tools.
I think it has its uses. For example its really handy when changing nappies as my toddler wriggles like crazy and it helps to distract him whilst I getting rid of the poo.
This comment is factually wrong. The airlines did not pay compensation to victims families, Boeing did. Boeing accepted full responsibility for the crash, for providing an unsafe system. Ethiopian airlines did their "due diligence" by purchasing an FAA approved aircraft, by Boeing. They weren't to know that a serious case of regulatory capture was happening.
https://www.google.com/url?q=https://www.theguardian.com/bus...
The way it works is that the entire assembly is in a vacuum. It kinda has to be as any gas which touches it will instantly condense to it or freeze to it. You then have a dual cryostat of liquid helium and liquid nitrogen cooling down the assembly (within the vacuum). The helium and nitrogen cryostat also have a vacuum shield. The nitrogen (liquid at 77K) is a sacraficial coolant which is far cheaper than liquid helium (liquid at 4K) that you need to get to these temperatures. Your're right that thermal radiation is an issue so you have to be careful with the placement of any windows or mirrors around the device.
Souce. I have a PhD in physics where I used equipment cooled to 4K.
Thanks for the resource. I'm pretty sure I used it for some of my simulations of C60 molecules hexagonal packing, during my physics PhD a few years back.
I'm not sure if he's edited his post, but it is extremely rare for students to share rooms at any point of their university life. The closest thing we have is a shared study where two people have their own small sleeping room, but share a space with two desks/chairs. And even that is very uncommon.
I have a PhD in physics. I have zero problem with anyone downloading any of my papers from scihub. My publishers paid me nothing, and also paid the academics who peer reviewed my paper nothing. If I had stayed in academia (I didn't partially because of the toxic nature of publishing) I would also have been expected to peer review other journals for free. Information should be free access information general, but publishers are the least deserving key holders.