Every sound is transmitted across the entire structure. There's no foundation or outside air for vibrations to attenuate into so sound travels very easily.
I stayed at a quirky hotel in Amsterdam where all of the rooms had different themes. The theme for this room was camera obscura. One wall had these large windows that had metal doors to totally seal out the light but the door in the middle had a small hole to make the camera obscura. The next morning we had a pretty cool shot of the buildings nearby. I hadn't ever actually seen a camera obscura before so I had no idea it looked as good as it does.
It's just a dock for a Pi compute module that has a built-in screen, keyboard, thermal printer, wifi nic, and some other interfaces for additional peripherals. You end up with a modern version of something like an Epson HX-20 or a Tandy TRS-80 Model 100. It's a toy and I don't think I could ever see myself needing one for anything important.
They should have lead with the picture of it all put together rather than that internal picture first.
Except there is money to be made in the green energy industry. There's no money to be made building a giant radio telescope. Sometimes corporations have a need for scientific institutions and their patronage helps keep the lights on but I really can't think of any way that can apply to something meant to stare at the stars. What could help is designing a radio telescope that have both scientific use and military use like China's telescope in Argentina. You have one user willing to pay plenty for time on it and another user that is just happy to get some work done.
Except most of these guys either paid the bribe or had it ready to go until they heard sirens. These guys could have easily reported the solicitation but instead they participated in it. This isn't the case where a cop is threatening to throw you in jail or plant drugs on you unless you pay up right now, this is a state permit process. No one had their life or freedom directly threatened over not having more CCW permits for their security team.
The sheriff deputies fucked up. The CCW applicants fucked up. Everyone got caught and everyone is going to suffer the consequences.
The "fuel filters" mentioned are firearm suppressors that are generally illegally used. Some times the filter is something that actually resembles a filter, sometimes it doesn't look at all like it would do much as a filter. Sometimes it's just an adapter that allows you to screw a real automotive oil filter onto the end of a gun. The other name for them is "solvent traps" which is some sort of cylindrical container thing you are supposed to attach to the end of the gun to collect a cleaning solvent that you pour through the barrel. No one really cleans a gun like this, you use the solvent on a swab attached to a metal cleaning rod. The internals just so happen to look like a typical suppressor but there is no exit hole for the bullet which you are supposed to drill yourself. Some even have a punch mark where the hole should to help align the drill. The illegal act is drilling that hole without filling out the ATF paperwork and paying the tax but even just possessing the "filter" or "solvent trap" might land you in hot water with the feds if they could make the case that you would have no use for such a device other than to make an unregistered suppressor.
The auto switches are drop-in mechanical pieces for a gun to convert it into burst fire or fully automatic, skirting laws, taxes, and registration. I don't remember the incognito name they use for these but there are very specific designs used for specific guns so once you see a picture, it's obvious what it actually is. Because these things are so specific in how they are built, there's pretty much no way you could escape conviction if you owned one and it was not registered. The feds could just say it looks like an auto switch and if you can't prove that it existed before the automatic weapons ban, then you are breaking the law.
They would just have a single state-run CA and ban all E2E messaging apps from app stores. Only state employees would have access to an E2E messaging app that would only use govt certs from the CA. Any apps that continue to operate outside of an app store could have their domestic servers seized and anything foreign would be blocked by all domestic ISPs. The govt could allow for civilian apps to use weak encryption as some sort of compromise but anything the govt can't crack instantly would be banned. It would require a Great Firewall-level of control with the govt playing whack-a-mole for a while but with enough time and money, civilian E2E would be near impossible. Fortunately, this is still a pipe dream for even the most extreme statists but if large corporations can come around to the idea of giving the govt an unlimited backdoor to their internal communications, say good bye to any/strong encryption for the average person.
This level of planning is like the US govt outlawing all guns tomorrow, it just isn't going to happen any time soon since not only are gun-owners usually not the type to want to give up a gun, the prevalence of gun ownership is so massive that it would take equally massive resources to run a completely successful confiscation program.
These sort of documents are usually necessary when bringing in devices with memory in them into secure areas. Security likes to know what is in a device and if there is any special procedure that needs to happen to wipe any non-volatile memory. If there's no way to zero out or replace any memory that may have stored sensitive data, the device cannot leave the area.
Original mission for Voyager 2 was Jupiter and Saturn fly-bys which was mostly a success. The idea is to engineer parts to survive the mission and maybe go a bit further if you aren't at a point of diminishing returns in regards to cost. If it costs $1000 for a 10% gain in life of part, maybe go for it. $1M for 10%? Maybe not. Additionally, gamma radiation can do some weird things to materials and can effect things differently depending on dose rate. Lubricants can increase in viscosity and acidity under gamma. Radiation effects on spacecraft was not as big of a deal back then. Missions were short and electronics weren't small enough to have noticeable radiation effects.
Rain does a pretty good job at degrading digital satcoms. There's potentially a stronger signal from the Starlink satellite because it's in LEO vs GEO so it could work but it also could just not work well at all. If you want high reliability, look into terrestrial microwave links but that's not available everywhere.
Easily changing the design and being the cheaper option to ASICs for small productions are the two main uses for FPGAs. You may be designing a box that can be configured to do different things so you may want to support multiple FPGA images to switch back and forth depending on the mission. You may just want to be able to easily upgrade firmware for a complex design in the future. For Space DSP applications, the FPGA is king and will probably be for a long time simply due to the ability to cram a lot of functionality into a small space (DSP, microcontroller, combinational logic circuits, and massive I/O banks all in one chip)
Cost of manufacturing something like this can only go down and there are plenty of applications where mass or power output/battery life of a device is much more important than cost.
The panels can help reduce total grid usage during the day to help supply power to businesses where people are during the day. A home AC shouldn't be running much during the day if no one is home so that helps with reducing the load. Once it gets dark, the load shifts back to homes where people are charging their cars and running the AC more heavily. I imagine the heaviest load times would be in the evening when solar panels aren't providing much power, the AC is starting to run to cool the house down, and people are starting to plug in their cars. Large power storage systems should be in place to help smooth out these increases in demand.
With the use of efficient lighting, running the AC or electric heat is probably the biggest energy usage for a house. Having solar panels supplying power during the day can help reduce the load on the grid from everyone running their AC. It's more of a benefit to the grid and everyone else to have panels without a battery than it is to your own energy needs.
FOIA reports usually have a small textbox over the redacted information with a reference to the reason for redaction, likely made in Adobe PDF. Then the docs are either printed and scanned or just converted to an image only PDF.
Why not just copy sections of the Bible if it's just a sample of work? Why go through the extra effort of creating a new script and possibly a new language just to show how well you can write? Latin would have been the predominate language for manuscripts at this time so writing in Latin would have been a better example of the writer's skills. These kinds of manuscripts took a lot of effort and resources to put together so if someone was just trying to make a portfolio of their work, do you think they would need to produce such a large volume when several pages would have sufficed?
The new test equipment all runs Windows 10. It's weird to hop between pieces of equipment where some run still run MSDOS and others run Windows 7 or 10. They are all calibrated and still chug along doing what they need to do, just a little slower. The only annoying thing is when you can only grab data off the unit with either a GPIB interface or a floppy.
When you drop off a package at the post office, you can either wait in line for an agent at the counter to scan your package (only during business hours) and give you a receipt or you can place them in a drop box (open 24/7). The drop box usually has a last pickup time on the label (3pm, 5pm, etc) for when someone actually collects the contents and then scan in the packages to get them into the sorting/tracking system. The problem is that sometimes these bins of packages might sit for a while until someone scans them for the first time. There is a bin behind the wall for the drop box and if it gets full, they pull up a new bin for the drop box so there could be multiple bins of packages that need to be scanned.
You would need to search the tracking number and see when the first scan occurs. Shippo is only looking at shipping label creation date which could be offset quite some time from when the package gets scanned. Large businesses might have enough employees to where they can pack, label, and ship out an order that day but small businesses might have someone hand delivering packages to the post office every other day.
Theft almost doesn't seem like the right word for it. I'd compare it more like when someone sneaks into a movie theater without paying. You could argue about whether or not the people stealing these films ever intended to pay money to see them in the first place. Studios should figure out how much money they actually lost on ticket sales to pirates who would have paid for a ticket if they had no access to a cam version and then compare that to how much they spend in lawyer fees and IP firms trying to combat it. Considering how easy it is to find a copy, watch it, and suffer no repercussions, I'd say they either are wasting their money or not spending enough.
Government pays for the work but does it through a cutout company so Apple isn't tied to work. They get the money to pay the Bechtel engineers and the government gets their iPod fairly.
At the time, an iPod might have been as innocent enough to not warrant any concern at a security checkpoint. Cellphones, cameras, and any other obvious recording equipment would be more scrutinized whereas a music player would not. Someone like a janitor listening to music while mopping would get less scrutiny than a visitor trying to take a tour of restricted areas with an iPod in their pocket. The visitor has to pass through the same checkpoints but the janitor is a known person, they show up to work all the time and maybe they have a story about how they won a new iPod in a raffle (while actually getting paid to walk around with it). Guards trust the janitor since he's already been vetted so they let him through with it. Or maybe he sneaks it in in the hope that he receives less punishment if caught because it's just an iPod, it's not like he smuggled in a camera. A visitor getting caught with the same iPod would be immediately kicked out get in a lot more trouble because they just received instructions not to bring anything in.
Masks aren't 100% effective so being in close contact with someone for such a long time (a haircut for women can take much longer than a typical trim for men) carries a high risk of transmission from an asymptomatic carrier.
Regular people shop at supermarkets so they don't starve. Armies carry food supplies so they don't have to shop at local supermarkets. They bring barbers because tight haircuts are essential to military dress and clean shaved faces are critical to tight sealing gas masks.
Figure 5b has a description that reads "Cyclic voltammograms for symmetric supercapacitors using 1 M H2SO4 aqueous electrolyte and poly(vinyl alcohol)/H2SO4 gel electrolyte". Looks like you can either submerge the bricks in a solution or have a gel layer between them to produce the actual capacitor structure.
The PowerPC 7457 was built on a 130nm process, used in the AmigaOne XE as well as the Apple G4 machines. That's probably about as good as you will get for an community-led chip fabrication. You could probably get it up to over 1GHz if you made a 68k at this size. A modern FPGA is probably the better way to go for this kind of thing. I doubt this free fab includes things like die testing and packaging. That's an expensive process so someone would need to front some money to actually get the testing and packaging done for enough chips to make the cost actually worth it. It would be much cheaper to design an interposer board that could plug into a motherboard to take the place of the original 68k. This would also allow you to continuously upgrade the processor without requiring a whole new fab to take place.
That's why they gave their parent's a password that could be used in case they ever actually need money. I remember growing up, my mom told me a password that would be used if an adult I didn't know was trying to pick me up from school or was in some way trying to get me to come with them. I think it was only used once when my mom's coworker picked me up after school because my mom was stuck at work. Nowadays, you need multiple signatures, a letter from your congressman, and a notary to let anyone that isn't the parent pick up a kid from school but this was before all of that.