时间:2019-02-15 作者:英语课 分类:英语时差8,16


英语课

Learning To Catch It’s a line drive headed straight for your glove. All you have to do is close your hand at the right moment. It takes only about fourteen one-hundredths of a second to close your hand around a baseball. But in that time, a baseball going ninety miles an hour travels over eighteen feet. Closing your hand a little late or a little early could turn the final out into a home run. But how do we know when the ball is exactly fourteen one-hundredths of a second away? We could use two variables–the ball’s speed and its distance–to calculate when it would arrive. But our sub-conscious mind does it without calculating and with only one variable. That variable is the rate at which the image of the ball is expanding in relation to the size of the image at that moment. Here’s how it works: a ball thrown from a distance grows gradually from a tiny speck 1 until it reaches us. The speck grows slowly at first, but the closer it gets, the faster it grows. A big ball far away may look the same size as a small ball up close, but if they’re traveling at the same speed, the closer ball grows faster. Knowing how big the speck is and how fast it’s growing, you could calculate how long it will take to reach you, but our sub-conscious mind does it in a single glance. By interpreting a single variable–namely how fast the ball appears to be growing relative to how big it appears at that moment–our mind knows just how long it will be before that speck turns into a baseball in our hand.



n.微粒,小污点,小斑点
  • I have not a speck of interest in it.我对它没有任何兴趣。
  • The sky is clear and bright without a speck of cloud.天空晴朗,一星星云彩也没有。
学英语单词
5-hydroxytryptamine receptor antagonist
a boy in buttons
administrative accounting
admissibility of Bayes decision rule
affaires d'honneur
anopheles hyrcanus var. sinensis
antiradicalization
arteriae rectalis superior
biocosmetics
body action
borsic
candidin
changing slide arm
chromium monoarsenide
coefficient of thermal deflection
coleotomy
combined reliability
commercial land develpment
confirming
conform(to)
degree Celsius
demit
different feeding schedule
direct attach
djukic
dual-line subsurface safety valve
ectolecithal
eigenmodal
Ende, Pulau
equity price
euboean sea
evels
exhaust blast
exterminative
falencki
favorable result
filling-faced fabric
fir filters
fire-proofing material
first-scattering angle
firsthand evidence
flauto piccolo
flax(-seed) oil
fourth-generation wireless
futtock plates
general disassembler
good cure
He-Ne
Heptacodium miconioides
indic sulfide
intrapan
Jurinea algida
keep a hatch before the door
Kobresia royleana
lancifolia
lost circulation material(lcm)
low water mark
Maneb
Mendeleev Abyssal Plain
Mildred Ella Didrikson
Moriguédou
Muslimifying
new workbook
nonindicating
normal mode vibration
Nutmeg State
oceanic industries association
outside diameter (od)
over and short account
palcy
paragentic mineral
parrasana
payment of fee
pergamenes
Peter Andreas
pill contraceptive
poly (vinyl acetate)
PQA
prydes
pseudo mycorrhiza
receiptor
rejuvenate head
respiratory pathways
rete arterfosum
richard burtons
rubbing out
safety ladder
school years
sensor pointing direction
separate bill
signal discrimination
Siren's song
sliverly
soda can
Some hope !
statistical theory of diffusion
strip intercepting
substitution impedance measuring set
time-shared BASIC
vallesine
water bamboo ?
zinc carbonate (smithsonite)