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(35) / 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(49) / 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(89) / 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(51) / 评论(0) 分类 TED演讲教育篇
学英语单词
acoustic reduction factor
activation control
angiokeratoma corporis diffusion
apparent powder density
arriere
astatine(element)
asterixes
astrum
auroral form
babakitis
ballotable
base-order
calisto
call detail record
charge density wave
chop-logic
chute cutoff
command control and communication system
crod
Crowthorne
delft-blue
dimethylamiloride
divan
double buffing machine
double-revolving-field theory
eczematid
electrical fibre
endangered
enthroner
ethylmethylbutylamine
exertion of
Faeces Vespertilionis
fibrillar unit
fighteress
filago
flossier
fogdrip
fotoman
from instinct
Frudalsbreen
fungusproofing
galanthuss
gnomonogram
horse-shoe hole
i-schapen
IMSplex
international marketing science
into place
iodoxy compound
iso-amyl-ethylbarbituric acid
j. e. johnstons
judging of exterior
kiddyish
Kleszczele
latera
laxatively
leading roles
long-time overcurrent relay
machinery parts
make ready for
maricas
massage brush
maximums
mop-up delay equalizer
Narrowband transmission
natural mode shape
nonautoimmune
nudey
outflowing jet
output as mined
page and segment table
peddled
poldaufs
proportional-plus-floating action
protest march
purified oil service tank
put A into B
put asunder
research director
rhaphuma ogatai
ronsmans
round splice
row input cell
Rāmjībanpur
Salakas
segmented-rod
sine wave characteristics
slit
sniffer planes
spoon curette
stock-gang
straddle type rod
supercritical region
symbiotic digestion
turbogrid plate
ureotelism
urnism
vain
VVL
waste vaive
whatsaname
Yasinya