双光子激发

Sometimes it is hard to see the light, especially it lies in the invisible spectrum, like ultrared, ultraviolet radiation. But if you long to see the unseeable, you might interested to hear that under certain conditions people can catch a glimpse of

发表于:2018-12-24 / 阅读(175) / 评论(0) 分类 2015年Scientific American(一)月

A nightlight may keep those monsters under the bed. But it may also open the door to the blues. Because a new study reveals that animals exposed to light all night long show signs of clinical depression. If you have access to electricity, you no doub

发表于:2018-12-24 / 阅读(185) / 评论(0) 分类 Scientific American(十)月

DAVID GREENE, HOST: I mean, let's listen to this. (SOUNDBITE OF TV SHOW, STAR TREK: THE ORIGINAL SERIES) JAMES DOOHAN: (As Captain Montgomery Scott) Ready to transport. WILLIAM SHATNER: (As Captain James T. Kirk) Energize. D. GREENE: Yes, the familia

发表于:2019-01-16 / 阅读(221) / 评论(0) 分类 2017年NPR美国国家公共电台7月

But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a

发表于:2019-01-17 / 阅读(214) / 评论(0) 分类 TED演讲教育篇
学英语单词
aeruginosus
agyric
alixe
aluminium magnesium alloy
anglicizing
arbitratour
artisan's lien
burghermasters
carry ladle
cataract-needle
Cerasus tomentosa
charge sb to do sth
chevaux
concrete support
constitutional vacancy
Coriolis resonance interactions
cost leader
cycled interrupt
D.C.two-wire insulated system
daisy chained cable
dependent benefit
devil water
diaphragm strain gage
digital assistant
doctors of fine arts
ectosarc(ectoplasm)
eczema of anus
eicosapentenoic acid (epa)
eliminate the negative
Esaki, Leo
false indication of a switch
ferrimagnetisms
final forging temperature
firing platform
flestolol
force friction
fuel shuffling tube
functional diverticulum
futuritial
give somebody the eye
glandulae circumanates
gypsum pottery plaster
hind wheel
historio-
infra-red sensitive material
intellectural responsibility block
interband absorption
intolerantly
intraisland
kc-lo
Kyoga, L.
lobengula
luxara
mangan-magnetite
maximal permissible intake
merino fibre
mineral deposit hydrogeochemistry
multiserial band
near-instantaneous
Never swap horses while crossing the stream.
nigger lovers
nitroaromatic acid
one dimensional system
origin of rifling
ornithic
outbreaker
panhandlings
parallel cutover
particular kind of commodity
Pennsylvania Avenue
piss pot
postcentral branch
posterior meningeal arteries
pyroelectric polymer
r?s vatn
random file structure
relief valve (pneumatic)
rinsing saw
Rothian
safaa
scotch gales
shale indicator
silverskin
spraying pressure
stump dump
supernoise
symplesiomorphies
tailheads
Tamaricaceae
Taylor-Orowan dislocation
total input
treedom
unfertile
v-f converter
Van Gelder
vertical shaping machine
vitromicrolitic
wastness
waxworking
wide frequency range headphone
zero type dynamometer
zingale