Why a Dead Alkaline Battery Bounces [video] • Hacker News Board

Re: Why a Dead Alkaline Battery Bounces [video]

#31

Post by cjslep » Fri, Sep 05, 2014, 1:15 PM UTC

akavel wrote: post #27

jacquesm wrote: post #8

Earlier quoted context omitted.

The quantity and variety of things that I've opened up during my lifetime without 'gloves and a mask' would probably scare you very much. The worst mistake I made to date is grinding off the top of a BLY90 as a kid before I knew what a MSDS is. So far so good, I think these folks will be fine as long as they wash their hands afterwards before eating, cleaning up after you've dropped a fluorescent tube is probably a l…

As to what people would play with without "gloves and a mask": http://en.wikipedia.org/wiki/Demon_core "After Slotin's accident, hands-on criticality experiments were stopped, and remote-control machines were designed by Schreiber, one of the survivors, to perform such experiments with all personnel at a quarter mile distance." Note: "After"... so what was the situation before?...

They would raise and lower the top half of the core with their bare hands, a screwdriver, and lots of shims. Literally hands-on criticality experiments.

Re: Why a Dead Alkaline Battery Bounces [video]

#32

Post by leephillips » Fri, Sep 05, 2014, 1:19 PM UTC

iamds wrote: post #22

junto wrote: post #19

Earlier quoted context omitted.

After watching that it made me think that lithium batteries could be turned into a weapon on a plane by terrorists. Assuming that they are that easy to accidentally short them out. Should they not be a banned from being taken in the cabin?

It's probably not banned because someone who could take over a plane with a lithium battery could take over a plane without a lithium battery.

But someone who could take over a plane with a nail clipper could probably manage without it, too.

Re: Why a Dead Alkaline Battery Bounces [video]

#33

Post by rtb » Fri, Sep 05, 2014, 1:52 PM UTC

For some reason, it upsets me that he refers to spent / empty / used batteries as "bad", as if they were faulty.

Re: Why a Dead Alkaline Battery Bounces [video]

#34

Post by jasallen » Fri, Sep 05, 2014, 1:54 PM UTC

rtb wrote: post #33

For some reason, it upsets me that he refers to spent / empty / used batteries as "bad", as if they were faulty.

He managed avoid the "flat" vs. "dead" controversy by making up a new convention altogether.

Re: Why a Dead Alkaline Battery Bounces [video]

#35

Post by DavidD » Fri, Sep 05, 2014, 2:14 PM UTC

Here is the transcript if you don't like watching the video http://bit.ly/1uD31Uz

Re: Why a Dead Alkaline Battery Bounces [video]

#36

Post by ixtli » Fri, Sep 05, 2014, 2:31 PM UTC

haar wrote: post #7

I think one of the bits I liked most was "Romeo (Retired Old Men Eating Out) Club" - looking at its website it seems like quite a large thing over there. I know that my Grandma goes to something similar (restricted to just tea and bingo), but it makes me wonder if a similar organisation exists in the UK; a lot of the older folk I know just aren't very social any more, simply due to the fact that their social groups h…

My grandmother runs a (quite large) group that provides a similar type of community for retired women over 65. It's a really interesting idea: they're all very smart and do a lot of interesting stuff. Most memorably they gave speeches in the Connecticut state senate advocating the right to euthanasia for terminally ill people of sound mind.

Re: Why a Dead Alkaline Battery Bounces [video]

#37

Post by kd0amg » Fri, Sep 05, 2014, 2:51 PM UTC

leephillips wrote: post #32

iamds wrote: post #22

Earlier quoted context omitted.

It's probably not banned because someone who could take over a plane with a lithium battery could take over a plane without a lithium battery.

But someone who could take over a plane with a nail clipper could probably manage without it, too.

And the TSA allows nail clippers in the cabin.

Re: Why a Dead Alkaline Battery Bounces [video]

#38

Post by daigoba66 » Fri, Sep 05, 2014, 3:05 PM UTC

junto wrote: post #19

simias wrote: post #18

Earlier quoted context omitted.

It's not the same technology and I wouldn't recommend tearing a lithium battery apart to look inside. Actually, I wouldn't recommend tearing apart any kind of batteries, lots of nasty stuff inside. You can find plenty of videos on youtube showing you the process, for instance: https://www.youtube.com/watch?v=BliWUHSOalU

After watching that it made me think that lithium batteries could be turned into a weapon on a plane by terrorists. Assuming that they are that easy to accidentally short them out. Should they not be a banned from being taken in the cabin?

The funny thing is that in the US you're not allowed to have loose lithium batteries in your checked baggage, but you can carry them on the plane.

Re: Why a Dead Alkaline Battery Bounces [video]

#39

Post by bitJericho » Fri, Sep 05, 2014, 3:35 PM UTC

jasallen wrote: post #34

rtb wrote: post #33

For some reason, it upsets me that he refers to spent / empty / used batteries as "bad", as if they were faulty.

He managed avoid the "flat" vs. "dead" controversy by making up a new convention altogether.

I think "consumed" would be most appropriate.

Re: Why a Dead Alkaline Battery Bounces [video]

#40

Post by bitJericho » Fri, Sep 05, 2014, 3:38 PM UTC

iamds wrote: post #22

junto wrote: post #19

Earlier quoted context omitted.

After watching that it made me think that lithium batteries could be turned into a weapon on a plane by terrorists. Assuming that they are that easy to accidentally short them out. Should they not be a banned from being taken in the cabin?

It's probably not banned because someone who could take over a plane with a lithium battery could take over a plane without a lithium battery.

Batteries above a certain capacity are not allowed.

http://blog.tsa.gov/2013/06/travel-tips-tuesday-safely-packi...