时间:2019-02-15 作者:英语课 分类:英语时差8,16


英语课

 In this Moment of Science Don gives Ya?l a neat trick to play on her brain. You might want to try it, too.   D: Here's a simple demonstration 1 you can do with cool implications. Find a large object that is brightly colored--let's make it a green door. Stand with that door to your side but don't look directly at it; you want it to be in your peripheral 2 vision. Now, without shifting your gaze, examine the door in the edge of your field of vision. What color is it? Answer? It's still green.


Y: It's still green? What kind of experiment is that? I thought you were going to say something happens to the color.
D: That's exactly right! The color stays green, which means something has happened-- because nothing in your peripheral vision should have any color at all.
Y: Nothing in your peripheral vision should have any color? Why not?
D: Because color is what we perceive when light of a particular frequency meets cones 3--special cells in your retina. But the light being reflected off the door is only landing on the outside edge of your retina. And there are almost no cones on the edges. Everything we see roughly seventy-five degrees away from the point we're fixed 4 on should be black and white.
Y: That's fascinating! But why is the door still green?
D: Presumably the door remains 5 green because vision isn't a simple matter of retinal cells. All the data your eyes send is interpreted by the brain. Your brain knows that the door is green, so it supplies information that isn't really there to keep the image stable. This is just one of the many ways your brain saves time and energy by making reasonably safe assumptions about the world around you. 

n.表明,示范,论证,示威
  • His new book is a demonstration of his patriotism.他写的新书是他的爱国精神的证明。
  • He gave a demonstration of the new technique then and there.他当场表演了这种新的操作方法。
adj.周边的,外围的
  • We dealt with the peripheral aspects of a cost reduction program.我们谈到了降低成本计划的一些外围问题。
  • The hotel provides the clerk the service and the peripheral traveling consultation.旅舍提供票务服务和周边旅游咨询。
n.(人眼)圆锥细胞;圆锥体( cone的名词复数 );球果;圆锥形东西;(盛冰淇淋的)锥形蛋卷筒
  • In the pines squirrels commonly chew off and drop entire cones. 松树上的松鼠通常咬掉和弄落整个球果。 来自辞典例句
  • Many children would rather eat ice cream from cones than from dishes. 许多小孩喜欢吃蛋卷冰淇淋胜过盘装冰淇淋。 来自辞典例句
adj.固定的,不变的,准备好的;(计算机)固定的
  • Have you two fixed on a date for the wedding yet?你们俩选定婚期了吗?
  • Once the aim is fixed,we should not change it arbitrarily.目标一旦确定,我们就不应该随意改变。
n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
学英语单词
a poon
A tent
absorption water
actuarial table
Alasin
alicycle
amidrazone
apogranite
attribution model
autocatalysts
avian-flu
bastard fount
Beaconsfield
bench-drill
boat bearer
bolillos
bresaolas
Bupleurum longicaule
cage hydraulic press
carbide insert bit
Catcher in the Rye
centimoes
channel decoder
comma construction
contact reliability inspection
cotton-enamel covered wire
course
Critesion
crystal tea
decontraction
demolition of property
Deuteronomic, Deuteronomical
deviation of borehole
DIIC
distance of relative movement
distesol
dividend payout ration
duquesnel
equivalent bar
error status register
family Rhinolophidae
gang seeder
general recursive predicate
geographic proximity
gridpoints
GVE
have a peep ab sb
have something on one's shoulders
hereditary predisposition
HF-24
high pressure turbine bypass
hobnail
icker
ignition residue
intermediate preference targets
irenina malloticola
Kannose-gawa
lameller tearing
leave one's card upon someone
left-click
level of organization
library member
man of quality
mangadom
mesomeric theory
miniaturizes
moneymaking
moral duty
moving speed of table
noise level
north land (severnaya zemlya)
Orroroo
outdoor motor
ovonic threshold switch
partial solid solution
partner's capiatl
perissus asperatus
personal computing conference
photoelectric photometer
pillar shaping machine
placentotrophy
Planchonella obovata
plex structure
primary safety valve for inner container
project production
rekles
sample pulse phase
Shentoo's line
sinaed
spring for air pump
stewed
suck-boy
takehome
thermal decomposition method
transmission standards
ultrasonic test method
UNRPR
UVPROM
uvular diastematia
walkback
weirty
workcentre