人是因为电压还是电流电死的？ - 未名空间MITBBS历史存档

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人是因为电压还是电流电死的？

人是因为电压还是电流电死的？# Joke - 肚皮舞运动

L*12016-01-29 08:01

1 楼

下面哪种情况会死?
110V
1. 只摸火线, 绝缘鞋
2. 只摸火线, 普通鞋
3. 摸火线和地线, 绝缘鞋
4. 摸火线和零线, 绝缘鞋
5. 摸零线和地线, 绝缘鞋
6. 双手摸不同带电火线, 绝缘鞋
100KV
1. 只摸火线, 绝缘鞋
2. 只摸火线, 普通鞋
3. 摸火线和地线, 绝缘鞋
4. 摸火线和零线, 绝缘鞋
5. 摸零线和地线, 绝缘鞋
6. 双手摸不同带电火线, 绝缘鞋
Bonus:
1. 把200节D Size电池串联, 双手摸正负极
2. 高压线掉到地上, 单腿跳过去
3. 高压线掉到地上, 雨天, 单腿跳过去
4. 雨天, 躲到有避雷针的大树下, 被雷击
5. 雨天, 躲到无避雷针的大树下, 被雷击
6. 雨天, 爬到有避雷针的大树上, 被雷击
7. 雨天, 爬到无避雷针的大树上, 被雷击
8. 美女在泡澡, 不慎把吹风机掉进浴盆, 无GFCI保护
9. 美女在泡澡, 不慎把启动的吹风机掉进浴盆, 有GFCI保护

D*g2016-01-29 08:01

2 楼

只要没有漏电，摸地线和零线是没有关系的。

g*e2016-01-29 08:01

3 楼

一般是因为足够大的电流通过心脏被电死的。

t*u2016-01-29 08:01

4 楼

日常没被几百万伏的电压击打过？

y*g2016-01-29 08:01

5 楼

电流吧。
光有电压电流很小也不会死人的。

【在 L****1 的大作中提到】

: 下面哪种情况会死?
: 110V
: 1. 只摸火线, 绝缘鞋
: 2. 只摸火线, 普通鞋
: 3. 摸火线和地线, 绝缘鞋
: 4. 摸火线和零线, 绝缘鞋
: 5. 摸零线和地线, 绝缘鞋
: 6. 双手摸不同带电火线, 绝缘鞋
: 100KV
: 1. 只摸火线, 绝缘鞋

s*e2016-01-29 08:01

6 楼

110v
2,3,4会死
100k
只有5不会死

【在 L****1 的大作中提到】

s*i2016-01-29 08:01

7 楼

哈哈，估计没穿过毛衣

【在 t***u 的大作中提到】

: 日常没被几百万伏的电压击打过？

D*g2016-01-29 08:01

8 楼

没梳过头

【在 s*****i 的大作中提到】

: 哈哈，估计没穿过毛衣

l*o2016-01-29 08:01

9 楼

电影里那种把吹风机扔进浴池就把人电死了是真的吗

【在 L****1 的大作中提到】

s*e2016-01-29 08:01

10 楼

1 不一定。因为200节电池内阻可能比较大，越新的电池越危险
2 有少量危险
3 死
4 相对安全
5 危险
6
7 死

【在 L****1 的大作中提到】

c*h2016-01-29 08:01

11 楼

110V一般不足以死
不1. 只摸火线, 绝缘鞋
伤2. 只摸火线, 普通鞋
伤3. 摸火线和地线, 绝缘鞋
伤4. 摸火线和零线, 绝缘鞋
不5. 摸零线和地线, 绝缘鞋
伤6. 双手摸不同带电火线, 绝缘鞋
100KV
不1. 只摸火线, 绝缘鞋
死2. 只摸火线, 普通鞋
死3. 摸火线和地线, 绝缘鞋
死4. 摸火线和零线, 绝缘鞋
一般没事，但是有零线偏压情况还是危险5. 摸零线和地线, 绝缘鞋
死6. 双手摸不同带电火线, 绝缘鞋
Bonus:
死1. 把200节D Size电池串联, 双手摸正负极
不2. 高压线掉到地上, 单腿跳过去
不3. 高压线掉到地上, 雨天, 单腿跳过去
不4. 雨天, 躲到有避雷针的大树下, 被雷击
死5. 雨天, 躲到无避雷针的大树下, 被雷击
不6. 雨天, 爬到有避雷针的大树上, 被雷击
死7. 雨天, 爬到无避雷针的大树上, 被雷击

M*k2016-01-29 08:01

12 楼

你没用过试电笔？

【在 L****1 的大作中提到】

D*g2016-01-29 08:01

13 楼

把人绑110v上，通电久点应该足以死。

【在 c********h 的大作中提到】

: 110V一般不足以死
: 不1. 只摸火线, 绝缘鞋
: 伤2. 只摸火线, 普通鞋
: 伤3. 摸火线和地线, 绝缘鞋
: 伤4. 摸火线和零线, 绝缘鞋
: 不5. 摸零线和地线, 绝缘鞋
: 伤6. 双手摸不同带电火线, 绝缘鞋
: 100KV
: 不1. 只摸火线, 绝缘鞋
: 死2. 只摸火线, 普通鞋

d*42016-01-29 08:01

14 楼

我记得人体危险电压是36v

【在 D******g 的大作中提到】

:
: 把人绑110v上，通电久点应该足以死。

t*o2016-01-29 08:01

15 楼

一节电池也能把人电死，不是有个家伙自己做实验，结果电死了。

【在 L****1 的大作中提到】

t*o2016-01-29 08:01

16 楼

玩万用表被电死了， 9V电池
so you get the answer now.
(1999) A US Navy safety publication describes injuries incurred while doing
don't's. One page described the fate of a sailor playing with a multimeter
in an unauthorized manner. He was curious about the resistance level of the
human body. He had a Simpson 260 multimeter, a small unit powered by a 9-
volt battery. That may not seem powerful enough to be dangerous… but it can
be deadly in the wrong hands.
The sailor took a probe in each hand to measure his bodily resistance from
thumb to thumb. But the probes had sharp tips, and in his excitement he
pressed his thumbs hard enough against the probes to break the skin. Once
the salty conducting fluid known as blood was available, the current from
the multimeter travelled right across the sailor's heart, disrupting the
electrical regulation of his heartbeat. He died before he could record his
Ohms.
The lesson? The Navy issues very few objects which are designed to be stuck
into the human body.
August 2000 Dan Wilson elaborates:
I'm a former Navy petty officer, enlisted for six years as an electrician
aboard a US Submarine. I got a lot of training. This story was used
frequently during my training in the US Navy as an example of what can
happen when procedures and safety measures are not followed. I considered
the story an urban legend until I found the incident report referenced in
the official Navy electrical safety guidelines. I now know it is true.
The actual event is slightly different than described above, and even more
deserving of a Darwin award. This sailor stuck the sharpened ends of the
probes through his thumbs intentionally. You see, he had just taken a course
that taught a critical concept called "internal resistance."
Internal resistance is resistance to electrical power flow that exists
inside any power source. It causes the terminal voltage to drop when load (
current) increases. You can demonstrate this concept, if you're careful, by
monitoring your car battery's terminal voltage, while someone starts up the
engine. The reading will be ~13 volts while the engine is off, but during
the period where the starter is cranking it will drop to 8-9 volts. The
voltage drop is due to the internal resistance of the battery.
This sailor, like all other electricians in training, had already been
through a safety class in which one of the excercises is to measure your
body's resistance by simply holding the probes between your fingertips. (
Most people read 500Kohms to 2Mohms.) Evidently, adding information from the
internal resistance class, this sailor wanted to determine his own body's "
internal resistance.". So he intentionally pushed the sharpened probe tips
through the skin to elimate the rather high skin resistance and get only the
"internal resistance". This, of course, caused his death.
How, you might ask, with only a 9V battery? Easy. One of the "rules of thumb
" that the Navy teaches is the 1-10-100 rule of current. This rule states
that 1mA of current through the human body can be felt, 10mA of current is
sufficient to make muscles contract to the point where you cannot let go of
a power source, and 100mA is sufficient to stop the heart. Let's look at Ohm
's law. Ohm's law (for DC systems - I will not discuss AC here) is written
as E=IR, where E is voltage in volts, I is current in Amps, and R is
resistance in Ohms.
When we did the experiment in the electrical safety class to determine our
body's resistance, we found a resistance of 500K Ohms. Using 9V and 500K
Ohms in the equation, we come up with a current of 18 microAmps, below the "
feel" threshold of 1mA. However, removing the insulation of skin from our
curious sailor here, the resistance through the very good conducting
electrolytes of the body is sharply lower. Around 100 ohms, in fact,
resulting in a current of 90mA - sufficient to stop our sailor's heart and
kill him.
As my electrical safety instructor said, "The reason we now have to teach
the electrical safety course to all electricians at least twice per year is
because some joe was bright enough to be the one person in the world who
could figure out how to kill himself with a 9V battery."

【在 t*****o 的大作中提到】

: 一节电池也能把人电死，不是有个家伙自己做实验，结果电死了。

c*h2016-01-29 08:01

17 楼

摸一下一般没那么久

【在 D******g 的大作中提到】

:
: 把人绑110v上，通电久点应该足以死。

t*o2016-01-29 08:01

18 楼

没有回路摸多久都没事

【在 c********h 的大作中提到】

: 摸一下一般没那么久

c*h2016-01-29 08:01

19 楼

是的，这是说36v以下一般是安全的，以上呢，还有个很大区间，不是超过36就死人

【在 d*****4 的大作中提到】

: 我记得人体危险电压是36v

t*o2016-01-29 08:01

20 楼

人体皮肤的电阻变化很大，如果手上都是老茧，怎么摸可能都没事，
手比较湿，皮肤薄，摸一下就完了。
如果想上面那个navy technician, 把电极直接插进皮下， 9V一样被电死。

【在 c********h 的大作中提到】

: 摸一下一般没那么久

u*q2016-01-29 08:01

21 楼

9V multimeter电死人简直不可思议啊。。。
确定是真的吗？
搞不好那个sailor本来心脏就有问题。

c*h2016-01-29 08:01

22 楼

不知道是不是现在新的电表改进了，现在都不会超过1mA了，不管你接的电阻多小

doing
the
can

【在 t*****o 的大作中提到】

: 玩万用表被电死了， 9V电池
: so you get the answer now.
: (1999) A US Navy safety publication describes injuries incurred while doing
: don't's. One page described the fate of a sailor playing with a multimeter
: in an unauthorized manner. He was curious about the resistance level of the
: human body. He had a Simpson 260 multimeter, a small unit powered by a 9-
: volt battery. That may not seem powerful enough to be dangerous… but it can
: be deadly in the wrong hands.
: The sailor took a probe in each hand to measure his bodily resistance from
: thumb to thumb. But the probes had sharp tips, and in his excitement he

t*o2016-01-29 08:01

23 楼

did some research
http://arstechnica.com/civis/viewtopic.php?f=26&t=119897
some serious discussion here, it seems the conclusion is unlikely...

【在 u****q 的大作中提到】

: 9V multimeter电死人简直不可思议啊。。。
: 确定是真的吗？
: 搞不好那个sailor本来心脏就有问题。

t*o2016-01-29 08:01

24 楼

学术版也讨论讨论，关键是人体电阻到底多大

【在 t*****o 的大作中提到】

: did some research
: http://arstechnica.com/civis/viewtopic.php?f=26&t=119897
: some serious discussion here, it seems the conclusion is unlikely...

c*h2016-01-29 08:01

25 楼

查一下Simpson 260 multimeter manual. 如果人体内阻真是100欧，怎么都死不了：放
Rx1档，输出只有1.5v，电流15mA，死不了；放Rx10000，输出9V，可是最高电流75uA，
也死不了。

【在 u****q 的大作中提到】

: 9V multimeter电死人简直不可思议啊。。。
: 确定是真的吗？
: 搞不好那个sailor本来心脏就有问题。

D*g2016-01-29 08:01

26 楼

人之间相差太多了，不同部位间相差也大，而且这个电阻还和加上去的电压有关系。
我左手右手间用万用表量，大概600k，属于电阻小的。俺爹2M多，他就敢直接碰110伏
感觉一下有电没，我就没那个胆量，每次都拿电笔。

【在 t*****o 的大作中提到】

: 学术版也讨论讨论，关键是人体电阻到底多大

D*g2016-01-29 08:01

27 楼

是，要是悬挂在半空，就像高压电线上站的鸟一样，啥事没有。

【在 t*****o 的大作中提到】

: 没有回路摸多久都没事

m*22016-01-29 08:01

28 楼

这个人与人之间内阻的差异，和经络理论，还有武侠小说里，我看你骨骼清奇，要不60
年功力download 给你，有没有关系呢？

【在 D******g 的大作中提到】

:
: 是，要是悬挂在半空，就像高压电线上站的鸟一样，啥事没有。

g*q2016-01-29 08:01

29 楼

皮肤以下的内阻差异不大,基本上就是几十升生理盐水的电阻.主要差别在皮肤.

60

【在 m**********2 的大作中提到】

: 这个人与人之间内阻的差异，和经络理论，还有武侠小说里，我看你骨骼清奇，要不60
: 年功力download 给你，有没有关系呢？

s*o2016-01-29 08:01

30 楼

我有个问题，如果左手摸电线，右手拿一个大铁球，会不会有问题？

【在 D******g 的大作中提到】

:
: 是，要是悬挂在半空，就像高压电线上站的鸟一样，啥事没有。

D*g2016-01-29 08:01

31 楼

不如右手拿一个巨大的铁饼，和大地距离小小的，像个大电容。

【在 s*****o 的大作中提到】

: 我有个问题，如果左手摸电线，右手拿一个大铁球，会不会有问题？

T*U2016-01-29 08:01

32 楼

电流，我就没见过被几万伏静电电死的。

【在 L****1 的大作中提到】

O*d2016-01-29 08:01

33 楼

110kv的电压，即使站在绝缘梯子上，摸了火线也会死。因为人对地有电容。那个电
容瞬间充电的电流很大。解决办法是穿包裹全身的导电服。相当于把人屏蔽在法拉第
笼子里。高压线带电作业就是这个原理。

D*g2016-01-29 08:01

34 楼

拿个很大号儿的电容充满静电给你来一下。

【在 T*U 的大作中提到】

: 电流，我就没见过被几万伏静电电死的。

e*e2016-01-29 08:01

35 楼

当然是电流。物理白学了？
静电场里电压可以很高。