拉夫(电磁)场等效定律

Callum: Hello, I'm Callum Robertson and this is Entertainment. Today we're talking about love. Love is one of the strongest emotions there is and that's usually how we think of it, as an emotion. Love is the topic of many many songs, poems, plays, f

发表于:2018-12-19 / 阅读(180) / 评论(0) 分类 Entertainment

Callum: Hello, I'm Callum Robertson and this is Entertainment. Today we're talking about love. Love is one of the strongest emotions there is and that's usually how we think of it, as an emotion. Love is the topic of many many songs, poems, plays, fi

发表于:2018-12-28 / 阅读(231) / 评论(0) 分类 英语听和读

UNIT SIX A field trip [00:07.34]Let's chant [00:09.82]Let's go on a field trip.There's so much to do. [00:17.21]We can collect leaves,and take picctures,too.We can watch the ants and see what they eat [00:24.92]Let's go on a field trip.It's quite a t

发表于:2019-01-09 / 阅读(385) / 评论(0) 分类 人教版小学英语五年级

Dionne Bromfield,她的教母是大名鼎鼎的Amy Winehouse,这个小女孩今年15岁(1996年出生),又是一个令人惊艳的好声音~来欣赏下她今年的新单曲Yeah Right吧~ Yeah Right Dionne Bromfield ft.Diggy Simmons Yo what

发表于:2019-01-11 / 阅读(201) / 评论(0) 分类 天籁音乐

Pareto's Principle - The 80-20 Rule How the 80/20 rule can help you be more effective. In 1906, Italian economist Vilfredo Pareto created a mathematical formula to describe the unequal distribution of

发表于:2019-01-21 / 阅读(219) / 评论(0) 分类 实用英语

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(147) / 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(146) / 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(207) / 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(174) / 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(153) / 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(149) / 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(184) / 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(198) / 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(172) / 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(166) / 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(190) / 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(173) / 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(173) / 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(198) / 评论(0) 分类 自然百科2011年

15岁英国醇香小女声:Dionne Bromfield - Yeah Right Dionne Bromfield,她的教母是大名鼎鼎的Amy Winehouse,这个小女孩今年15岁(1996年出生),又是一个令人惊艳的好声音~来欣赏下她今年的新单曲Yeah Rig

发表于:2019-03-02 / 阅读(271) / 评论(0) 分类 经典英文歌曲
学英语单词
a nail in it's coffin
active desktop
affaires
ajar door hook
alcohol-soluble protein
an official residence
arms races
arteria alveolaris
atomic absorption spectroscopy
axial turbo-blower
axillary folds
bacow
bartholin gland
beach flea
bellringing
birotary gas turbine
Bluntisham
boosting transformer
brutoxin
Brǎdeni
case report
cattle cakes
clemenciae
concaving
conduction state
credit-and-debit economy
Danish seine
depot vital power frequency circuit
deuterogenous
differential feedback method
Digital Text Platform
dihexagonal-prism
diospyrol
drab clay
environmental protection statistics
evapotranspiration
ex opere operato
EXBEDCAP
feoffments
forwarded summary
furrow cover
gamblings
general purpose audit programs
genetic mutation
genus Rauwolfia
Gibert
gotard
gushest
half exact functor
heraldically
Hermetia
hog-backed
horizontal synchronization mode
huerta
inlet aerodynamics
input output method
labial hernia
lepospondyls
liquid metal extraction process
load of hay
location information
lord justice general
mccoppin
metal-powder press
mid-waters
mini-cassette tape
mobile drilling platform /rig
morulation
net domestic income
network station
neutron-energy distri-bution
Nihau
nonweapons
null-frequency indicator
oxidative decarboxylase
Pellona
permanent liabilities
phenyl nitromethane
plastic house culture
portable concrete mixer
positive belt
prescored
prohepos
promorph
proto-atmosphere
research center
root crown
scatter reflections
scott fitzgerald
seeking asylum
single refraction
Spotton
superstrength adhesive
sweet-shops
tangelo
terminologists
test model
topocentric libration
turbulent shear force
unmiscarrying
vestigial sideband (vsb)
wedge-shaped cross-bedding