时间:2018-12-31 作者:英语课 分类:英语听力文摘 English Digest


英语课

   Ben Franklin Did Not Get Struck By Lightning


  Did Ben Franklin really discover electricity with a kite?
  Everybody has heard the famous story of how pioneering experimenter–and part-time founding father–Ben Franklin tied a key to a kite string and flew the kite in a thunderstorm. The kite was hit by lightning, and zap! Franklin had discovered electricity.


图片1


  Fried Franklin
  Well, it makes a better story than it does an experiment. The danger is that lightning is not something you want to play with, and you certainly don’t want to attract it to yourself! Were this story to be true, I’m afraid, the result would have been fried Franklin.
  What Ben actually did in his famous 1752 experiment was to cause some excess electrical charge near a storm cloud to ground out through his kite string–still an impressive demonstration 1, but a much less powerful prospect 2 than an actual lightning strike.
  Myths
  Nor is it true that Franklin discovered electricity, as people tend to say. What he was trying to do was to demonstrate that lightning itself is simply a powerful electric discharge between the clouds and the earth. In this he was entirely 3 correct.
  Now, did you know that two of the basic terms we use even today to describe electric charge were coined by Franklin? Next time.
  本.富兰克林没有被雷击
  本.富兰克林真的靠一只风筝发现了电吗?
  大家都听过这个有名的故事:本.富兰克林这位开创性的实验者兼开国之父如将一把钥匙系到风筝线上,并在电闪雷鸣的恶劣天气下放风筝。风筝被闪电击中烧毁了,于是富兰克林发现了电。
  烧焦的富兰克林
  我们最好把它当成一个故事而非实验。这个实验的危险之处在于:闪电不是你能玩耍的东西,当然你也不想引“电”上身。如果这个故事是真的,恐怕富兰克林早已被烧焦了。
  在1752年这次著名的实验中,本所做的就是将暴风云附近的过量电荷通过风筝线引到地面上来,虽然相比实际雷击威力要小很多,但它仍是一个令人印象深刻的证明。
  神话
  事实上,富兰克林也没有像人们所说的那样发现了电。他所努力做的一切就是要证明:闪电本身只是云和地球之间的一种威力巨大的放电现象,在这一点上,他是完全正确的。
  时至今日我们仍用以描述电荷的两个基本术语是富兰克林创造的,你知道吗?这个问题我们下次详述。

n.表明,示范,论证,示威
  • His new book is a demonstration of his patriotism.他写的新书是他的爱国精神的证明。
  • He gave a demonstration of the new technique then and there.他当场表演了这种新的操作方法。
n.前景,前途;景色,视野
  • This state of things holds out a cheerful prospect.事态呈现出可喜的前景。
  • The prospect became more evident.前景变得更加明朗了。
ad.全部地,完整地;完全地,彻底地
  • The fire was entirely caused by their neglect of duty. 那场火灾完全是由于他们失职而引起的。
  • His life was entirely given up to the educational work. 他的一生统统献给了教育工作。
标签: 英语听力 文摘
学英语单词
affeerers
All's well!
Avila Camacho, Manuel
bargewoman
Baring, Maurice
Bas-en-Basset
be in the land of nod
be on heat
Bogotans
captivatingly
chain screen
clambers
clearly know
clendenin
cold seal pressure vessel
colo(u)r TV transmitter
construction organization design
cross-lighting
current goal review date/time
Daedunsan
daily maximum water consumption
dariole
demi-vegetarian
designers
device not ready
double-quotes
dust exhauster
electronic data switching system
embryonic blastoderm
epitrichocutis
equalibrator
error performance index
Felling-age
filed out
fine boring tool
fingerprint access and searching technique
four-point switch
galarraga
gyroscope equipment
heat sink fan
hermit crab sponges
high-hatting
incurably
individual level
infectious
jomo kenyatas
Kneipp method
lb-in
low temperature baking enamel
magnetic sound talkie
mahimahi
make ... bed
micatization
misfeel
muchroom disease
multi-national river
neutron bath method
news event
North Central State
nucleiform
oil jacket
oncogenic dna virus
ONPF
over-speed device
oxyferryls
passenger revenue
pat himself on the back
peak height of mass spectrometry
penicilliposis marneffei
perineustic
pong
primitivized
reciprocal dielectric constant
reinage
rental and lending rights
ring in
ROP,R.O.P.
SACOM
saxifraga
Scirpus michelianus
screwpiling
shinjar
short-term equilibrium
single voyage charter
skulker
slip-form concrete paver
source word location
stowed away
symmetric seminormed algebra
syncranterian
synovial structure
TAP-144
tau leptons
textually
tribout
Tundzha(Tunca)
tune ups
undecylic aldehyde
underwriting agent
unsqueeze
wedge bolt
world-record