That's intriguing! I was under the impression that the mains frequency varied, which is why mains hum is useful for dating recordings. It appears there is some drift (but why?), although they aim to keep the average stable over a certain period. The article states that the device primarily relies on mains frequency for timekeeping, using the crystal oscillator as a backup. I found that unexpected, though I'm not well-versed in either topic.
The mains frequency is literally how fast the generators in power plants are turning. If the load on the grid increases, those generators slow down slightly and more natural gas/coal/heat needs to be added to increase the frequency again. This whole process is quite complicated as not every plant can react in the same time. Some plants are always at 100% capacity, while others are dedicated to governing the frequency.
So there are small fluctuations, often between 0.2 Hz around the base frequency, but the average is very close to the theoretical 50/60 Hz. And for an alarm clock that is good enough.
Apple has a decent trade-in offering through their partner, Brightstar--that is, IF you receive the amount initially quoted or AT ALL.
Any google search of "brightstar" and "scam" will bring up a seemingly unlimited number of results showing customers negative experiences with Brightstar. I've seen everything from Brightstar not responding once their device has been mailed in, receiving $0 instead of their initial quote, not receiving their device back, etc.
For me, the risk is way too high to go through with them. Does anyone have any positive and relatively pain-free experiences selling their laptops in a safe and reliable way?
Jan Kuciak (an investigative journalist) and his fiancee were killed (2 shots in the heart close range and then, bullet in the head while kneeling respectively).
At the time he was investigating the connections between the current government and mafia. It triggered huge protests in Slovakia. The prime minister of Slovakia was forced to resign.
Marian Kocner is a suspect of ordering the murder. Apparently he was using Theema to do that.
My Late 2013 MacBook Pro 15" broke down last month (wouldn't start). I didn't want to go through the setup of a new laptop, so I took it to Apple store. Got a new screen, new chassis, new screen, new keyboard, new logic board (I think). Same SSD, all my data was intact.
Total cost: $700. This MacBook is 6 years old and it was totally worth it.
