无力[磁]场

Starfield最初是由Tim和Jon Neufeld兄弟俩成立的乐队。乐队最大的特点就是男生清新而有磁性,带着春风和煦般的美好意蕴。 Artist:Starfield Song:Unashamed I have not much To offer You Not near what You deserve

发表于:2019-01-11 / 阅读(123) / 评论(0) 分类 金属

The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit

发表于:2019-01-22 / 阅读(127) / 评论(0) 分类 自然百科2011年

Radiation causes damage at the most fundamental level. It mutates the blueprint of life, DNA. Earth's magnetosphere is our crucial defense. It's so fundamental to our evolution and continued existence that the race is on to understand why it's changi

发表于:2019-01-22 / 阅读(121) / 评论(0) 分类 自然百科2011年

Earth's magnetic field has reversed thousands of times since its formation 4.5 billion years ago. And scientists now believe that the next reversal is imminent. The race is on to predicting exactly when it will occur. In 2010, the European Space Agen

发表于:2019-01-22 / 阅读(110) / 评论(0) 分类 自然百科2011年

As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get increasingly close to the Earth's surface. As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get

发表于:2019-01-22 / 阅读(129) / 评论(0) 分类 自然百科2011年

During its magnetic cycle, the Sun undergoes periodic changes in activity. Every 11 years, it enters solar maximum. This 11 years cycle of solar activity has peaks where theres lots of solar storms. And right now where the sun is taking a little napp

发表于:2019-01-22 / 阅读(172) / 评论(0) 分类 自然百科2011年

Six years later, they come to believe these light flashes are the results of high energy, heavy cosmic rays penetrating the spacecraft and the crew members' eyes. These/ protons or electrons, just very, very high energy, ripped / part of atoms, sprin

发表于:2019-01-22 / 阅读(145) / 评论(0) 分类 自然百科2011年

Glatsmire's model shows that the magnetic poles swap places spontaneously due to / complex processes within the core. We were used to the idea that a compass points somewhere near the North Pole and hence we can use it for navigation, but there are p

发表于:2019-01-22 / 阅读(123) / 评论(0) 分类 自然百科2011年

By analyzing thousands of lava samples, geophysicists discover/ that the Earth's magnetic field has reversed over 18,000 times in the last 20 million years. On either side of these reversals is a long period of dramatically reduced field strength. Du

发表于:2019-01-22 / 阅读(121) / 评论(0) 分类 自然百科2011年

We drive them about 20 miles away to the North, and release them, and we track them as they try to fly back home. We drive them about 20 miles away to the North, and release them, and we track them as they try to fly back home. Hes up, OK. Holland wa

发表于:2019-01-22 / 阅读(132) / 评论(0) 分类 自然百科2011年

By analyzing different samples of lava, Herrero / Bervera has built up a picture of how the filed has changed since long before humans were around. They are actually the recorders of the Earth's magnetic field in hundreds of years, thousands of years

发表于:2019-01-22 / 阅读(132) / 评论(0) 分类 自然百科2011年

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(128) / 评论(0) 分类 自然百科2011年

In polar regions where the magnetic field is / weakest, auroras glow in the sky. These dazzling displays of colored lights form when solar particles slam into gases in our atmosphere causing them to glow. The stronger the solar wind, the more dramati

发表于:2019-01-22 / 阅读(140) / 评论(0) 分类 自然百科2011年

Scientists believe that the South Atlantic Anomaly, is a sign of a global decline in the magnetic field. Evidence of this comes from a surprising source. Dr. Mimi Hill uses pottery to uncover the secrets of earth's magnetic past. Ancient pots tell us

发表于:2019-01-22 / 阅读(136) / 评论(0) 分类 自然百科2011年

It's clear from the fact that the Martian crust is strongly magnetized, that there must have been a magnetic field on Mars in the past, that the only way we know to magnetize rocks is for them to form in the presence of magnetic field. Why did Mars l

发表于:2019-01-22 / 阅读(135) / 评论(0) 分类 自然百科2011年

The loss of the magnetic field has a catastrophic impact on the planet's evolution. Mars becomes the red planet we see today. If earths magnetic protection continues to fade, would it suffer the same fate? If it vanishes completely, the planet might

发表于:2019-01-22 / 阅读(153) / 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(137) / 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(138) / 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(147) / 评论(0) 分类 自然百科2011年

Blockson's computer model reveals that at the South Atlantic Anomaly, the magnetic field isn't just weaker than anywhere else on the planet. It's actually reversed polarity. There is a patch on the core in the South Atlantic where things are not poin

发表于:2019-01-22 / 阅读(136) / 评论(0) 分类 自然百科2011年
学英语单词
abnormalised
aerocooler
aeroplethysmograph
Aprodine
athlon
automatic pirn winding machine
Baginda
bandel
Bartholin
beat up against
boycunts
brivetted
bruit de souffle
bubblegum pink
cager
calcium strontianite
casualty record
Cheremisinovskiy Rayon
chlorleukemia
currency sign
cylinder dryer
decoir
denture aesthetics
denture border
device selected
difuntos
Diplostomum
draft bar
duality space
echooanatomy
elaboratory
electric machinery and apparatus
electro-acoustic delay line
elevation displacement
emulsifying (packed) column
EPN
ethyl sulfonic acid
exhaust emission
Figuristian
frizzily
galliani
gastric spiculum
geburs
general geographic atlas
glycations
God give me strength!
hand axe
in event of
l'incarnation
l-shaped knife
lintuzumab
macroerythrocyte
manifold heat control
Market Drayton
megaplume
Melilli
mixed economy
model sampling
Morris Glacier
music-makings
natural shrinking
neosocialist
net values clause
Neu Zittau
nurnbergs
oil fuel trip
packing bag
pendulum anemometer
poppyseeds
Pumsi
rejuvenated orogenic zone
reversed pendulum
rhododendron simsii var.eriocarpum hort.
Rio Grande Abyssal Plain
Roccellaceae
self-correcting automatic navigation
Shareholding co-operative system
sky parlor
slicky slide
slurry water content
snellen test chart
south southwests
stabilized bombing approach equipment
Straight-boled
straight-run spirit
subfixes
suipestifer
syck
tarka dal
tazobactam
temperature amplitude
thoratec
throttle back
tribadisms
uncooperating
vein rib
Verkhnyaya Maksakovka
wimbled
woolly daisy
woundyr
xylotrechus kosempoensis
zdansky