打响指的发声原理为什么会发出声音

通过使手指摩擦而产生短促而响亮的响声.在无聊的时候、灵感突现、灵机一动、猛然醒悟、引人注意的时候人会做这一动作.有时在女性面前做这一动作会使人感到轻佻.

就是中指和手掌肌肉的撞击声，通过无名指和小指与手掌形成的共鸣腔放大而出声。

中指敲击,小指和无名指还有手掌共同组成的小窝引起的空气剧烈震动.鼓掌时手心要有个窝的话,也会出现和响指相似的声音.

响度与频率是不同的方面：频率决定的是音调,就象音乐中的1,2,3,4,5,6,7频率越高,声音越“尖”
而声音的大小是由响度决定的,比如你也喊一个“叨”音,比你力气 大的人也喊一个,那么你的响度就小,力气大的人响度就大,当然声音也就越大.
超声波和次生波都是按频率划分的.人的耳朵听声音有一个固定的频率范围,超过或者低于这个范围都是听不见的.低于这个范围的叫次生波,高于这个范围的叫超声波.
既然是我们听的到的声音那么就没有什么危害了.在日常生活中,人们常受到外界振动的影响,如车船的颠簸,机械的振动和噪音的影响等.当这些振动恰好在次声波的范围之内,对人的影响就比较大.它能使你晕车,晕船,甚至头痛、呕吐.这些都是短时间对人的影响并不强烈!

snapping finger
其它相关解释:

When I set my finger,it shows the concern start. set不知对不对哈

abacus(算盘) balls:pit-a-pat,pita pat
arrows:whistle,whiz
artillery(大炮):booms
balls:bounce
bank notes:rustle
bayonets:clink and clash
beats:pit-a-pat,pita pat,thump,thud,patter
bellows(风箱):flip-flap
bells:clink,clang,jingle,jingle-jangles-jingle,ding dong.
bikes:jangle
boots(皮靴):crunch
bottles:crack,crick-crack,rattle
bow string:snap
bowels:rumble
brakes:screech
branches:snap
breeze:puffs
bullets:whistle,whiz,zip
buses:rattle,hoot,and thump
cameras:snick
candles:splutter
cars:crash,toot(horn)
carts:rumble,creak
cattle:low
chains:clank
clocks:ding dang,tick,ticktack,tic tak
clothes:rustle
coins:jingle
cooking pots:sizzle
cords:pop
curtains:flap
dishes:ding dang,jingle,clatter
doors:creak,rat-tat-tat,rat tattoo,rattle,
drums:rub-a-dub,rataplan
dry leaves:rustle
eating:slurp
engines:chug,chum,whistle
feet:chatter,tramp
fingers snap
fire crackers:bang,pup
fire snap
flags:flap flutter
floor:creak
glass:crash,clinks,
gongs:ding-dang
guns pup,boom,click
hands:clap,flick
high heal shoes:click
horns:toot
horse's hooves:dip-clop
jade:tickle
keys:clink
knife and fork:clack
leather shoes:click-clack
leaves:whisper,rustle,
locks:snap,click,
locomotive(火车头):puff
machines:buzz,
machines guns:rattle,chatter,tat-rat,tat-tat-tat
metal:ting,clash,clink,tinkle,jing dong,ticktack
mind:buzz
oil:sizzle
paper:rustle
planes:zoom,crash,
radios:squeak
rain:patters,pit-pat-pit-pat
rifle:crack,pop
ropes:crack,snap,pop
scissors:clip-clop
silk:rustle
snow:spatters
steam:hoop,hoos,hoot
stick:swish
stomach:rumble
stones:smack,flop
tears:plop
teeth:chatter
telephone:ring,jangle
thunder:clap,peal,rumble,
tongue:click
trains:rattle,clatter,whistle,murmur
trumps(号):toot
trucks:rumble,grunt
type writers:tap,clatter
watches:tick,ticktack
water:babbles,bubbles,drip-draps,splashes,sizzles,spish-splash,hiss,
wheels:rumble,crunch,whir
whips(鞭子):flick,smack,snap,swish
whistles:whack
wind:haot,toot,howl,rattle,sough
windows:rattle