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This is Scientific American's 60-Second Science. I'm Adam Hinterthuer. Got a minute? Don't be fooled by those big bovine eyes and the mouth slowly chewing cudcows have a magnetic personality. At least thats the claim made by German researchers in the

发表于:2018-12-24 / 阅读(74) / 评论(0) 分类 Scientific American(八)月

If we could flip a switch and just turn off the Earth's magnetic field, it will take about 15,000 years to disappear, based on the rate of decay of the field that we've seen over the last 150 years. It's currently decaying at a rate that would see an

发表于:2019-01-22 / 阅读(48) / 评论(0) 分类 自然百科2011年

Easily confused by this idea, there has a big thawed iron inner core, so that I think it's just the bar magnet, just permanent magnet frozen in nad, and that's where causes all the magnetic field. But it's too hot inside the Earth, that can't happen

发表于:2019-01-22 / 阅读(50) / 评论(0) 分类 自然百科2011年

As the vast sphere reaches / maximum speed, something incredible happens. Huge lines of magnetism arc in and out of the model core. Well, we can't see the magnetic field coming out of the experiment, we can measure them, we can put many different mag

发表于:2019-01-22 / 阅读(60) / 评论(0) 分类 自然百科2011年

Larry Newitt from the Geological Survey of Canada charts the movement of the magnetic North Pole as it wanders the icy reaches of northern Canada. To determine where the magnetic pole / is, we can't rely on one single observation. What I try to do is

发表于:2019-01-22 / 阅读(54) / 评论(0) 分类 自然百科2011年

The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field

发表于:2019-02-06 / 阅读(63) / 评论(0) 分类 英语新闻
学英语单词
allowable-bearing stress
Amchlor
amorous
amplitude balance control
antrums
Apecchio
arc spectroscopy
assisted draught
backbear
bird-brain
boot hook
brained
bright giant
buccaned
bulkie rolls
Bushdog
butcher pig
butteridge
by the bows
calden
capacitance-voltage characteristics
carlston
carozzas
cell genetics
cheik
choice of forum clause
CIM
coffee-shop
combustible mixture(inflam-mable mixture)
day out
De Bilt
Dendrobium guangxiense
diffraction colour
disavowal
disengaging lever
dynamic coating
economic parameter
employee's payroll taxes
enzymatic properties
erzulie
fire bricks
folded-plate structure
formaldehyde oxime
Gaoshu Township
haulage wire rope
Idaho Falls
ikkyu
impulse factor
intisy
island hopping
it will come out in the wash
Kamafuse-yama
kandi
Kokborok
long nozzle heel nailing machine
LTBP-2
mailbox name
marissas
median-plane coil current
misteriosa
moahmar
negotiable order of withdrawal (now)
network terminal option device
obeahmen
oil-immersed solenoid
Pachi
palegold searsids
paraprotein(a)emia
per se legal
pertinence
petrographic classification
ph index
piranga flava hepaticas
plain bolt
psychologytable
reheat(ing) cycle
road asphalt liquid
Rosenmmuller's gland
SBNT
show one's years
single engined
sitting in camera
sodium metatitantate
sterilisatio
subuniform
survived winter mosquitoes
tail roller
test-fired
tobaccoed
transmitter optical connector
triisopropyltin bromide
unsaturated permeability
upper head
very high-power transistor
waisted stud
waxy
westrop
weymouth pines
wharp
white loaf
wollen fabrics
wood pattern glue