Live data from Hacker News

One quantum transition makes light at 21 cm

bigthink.com

21–30 of 188 posts

Re: One quantum transition makes light at 21 cm

#22
post #9

Earlier quoted context omitted.

I suppose it's interesting to think about. At today's clock rates, the distance between the CPU and RAM actually adds a small, but still significant delay.

It's ultimately what killed having a memory controller on the northbridge of a motherboard. Having the CPU talk to a separate chip to ultimately talk to the RAM simply added too much latency into the entire process.

And it may end up causing CAMM2 to end up being the next standard. The physical layout of the chips on the board means the traces can be shorter - leading to lower latency and higher stability.

Re: One quantum transition makes light at 21 cm

#27
post #8
post #2

I had a CS professor that used to hold up a length of string roughly that length and talk about how that is how far a bit of data can travel at the speed of light during a clock cycle or something. Honestly don't remember the point he was trying to make.

Admiral Hopper[1] used to use string to demonstrate how long pieces of time are: https://www.youtube.com/watch?v=9eyFDBPk4Yw [1] https://en.wikipedia.org/wiki/Grace_Hopper

Woah. Imagine extrapolating that for life. What does it mean to throw away a day?
Post reply on HN