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Janet Jackson had the power to crash laptop computers (2022)

devblogs.microsoft.com

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Re: Janet Jackson had the power to crash laptop computers (2022)

#61

Post by jwitthuhn »

daymanstep wrote: post #25
vee-kay wrote: post #12

Earlier quoted context omitted.

Technically, that magnetic spinning HDD can work even after decades if maintained safely (no dust, no extreme heat) and without stress, even if it is not switched on for years. In fact, if a magnetic HDD crashes, you may still recover some or all of the data by doing something hardcore, such as letting it sit for some hours in the freezer of your refrigerator, or immersing it in a bowl of rice overnight. However, SSD…

HDDs also lose magnetic charge over time, about 1% per year. So you need to periodically spin up and rewrite the data every few years. CD drives however, can store data indefinitely without needing refreshing.

The important distinction here is that CD-ROMs can store data indefinitely, but CD-Rs and CD-RWs can not.

Re: Janet Jackson had the power to crash laptop computers (2022)

#62

Post by lisper »

elteto wrote: post #47

Just a small nitpick: the Tacoma Narrows bridge didn’t collapse because of resonance but because of flutter. It’s a common misconception. For resonance the external driving force must match the resonance frequency of the system, but wind is rarely/never purely sinusoidal.

https://ocw.mit.edu/courses/18-03-differential-equations-spr...

Re: Janet Jackson had the power to crash laptop computers (2022)

#63

Post by kelnos »

elteto wrote: post #47

Just a small nitpick: the Tacoma Narrows bridge didn’t collapse because of resonance but because of flutter. It’s a common misconception. For resonance the external driving force must match the resonance frequency of the system, but wind is rarely/never purely sinusoidal.

The article covers this:

> Follow-up 2: Yes, I know that the Tacoma Narrows Bridge collapse was not the result of resonance, but I felt I had to drop the reference to forestall the “You forgot to mention the Tacoma Narrows Bridge!” comments.

Re: Janet Jackson had the power to crash laptop computers (2022)

#64

Post by neomantra »

yegle wrote: post #18

https://youtu.be/tDacjrSCeq4 reminds me of this gem.

So classic. For those weary of random links, it’s Cantrill and Gregg screaming at Thumpers and affecting IOPS.

That was such a great machine. We rearchitected our systems around it.

Re: Janet Jackson had the power to crash laptop computers (2022)

#66

Post by mstep »

according to this video [0] the frequency was 84.2. that-s not unplausible.

a known problem in cutting vinyl records are sudden bursts of high volume frequencies around 100 hz, that have the potential to make the needle skip with a normal amount of weight on the tone-arm.

-------

[0] https://www.youtube.com/watch?v=-y3RGeaxksY

Re: Janet Jackson had the power to crash laptop computers (2022)

#68

Post by MarkSweep »

echelon wrote: post #52
elteto wrote: post #47

Just a small nitpick: the Tacoma Narrows bridge didn’t collapse because of resonance but because of flutter. It’s a common misconception. For resonance the external driving force must match the resonance frequency of the system, but wind is rarely/never purely sinusoidal.

Is flutter a derivative like jerk?

The derivatives following jerk are snap, crackle, and pop:

https://en.wikipedia.org/wiki/Fourth,_fifth,_and_sixth_deriv...

Re: Janet Jackson had the power to crash laptop computers (2022)

#69

Post by kevin_thibedeau »

jwitthuhn wrote: post #61
daymanstep wrote: post #25

Earlier quoted context omitted.

HDDs also lose magnetic charge over time, about 1% per year. So you need to periodically spin up and rewrite the data every few years. CD drives however, can store data indefinitely without needing refreshing.

The important distinction here is that CD-ROMs can store data indefinitely, but CD-Rs and CD-RWs can not.

BD-R and M-Disc CD and DVDs have archival storage life.

Re: Janet Jackson had the power to crash laptop computers (2022)

#70

Post by forrestthewoods »

elteto wrote: post #47

Just a small nitpick: the Tacoma Narrows bridge didn’t collapse because of resonance but because of flutter. It’s a common misconception. For resonance the external driving force must match the resonance frequency of the system, but wind is rarely/never purely sinusoidal.

Ask me how I know you didn’t read the whole article!
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