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元宵节
上午上班去,棒棒哭着要找妈妈,爸爸说:“妈妈去赚钱了,给棒棒花。” 棒棒说:“棒棒也要赚钱,给外婆花,给奶奶花,给(小狗)嘟嘟花!”
中午回来,棒棒非常高兴,拉着我的手说:“Mommy, let's go, play toy, OK?” 我一开始还没听明白,知道他把我拉进房间,示意我和他一起玩地上的串珠,我才明白过来。我从来没有用英文说“玩玩具”, 这个是他自己搭配出来的词组。
棒棒吃苹果,吃完去给妈妈也拿:“I give you.” 拿着苹果递过来催着我吃,“Mommy eat, eat!” 简直热情过头了。
看书的时候,他很喜欢其中一个场景,他说:“Mommy, go in book.” 我们一直假装图里的人物是棒棒和妈妈,所以我说:“Mommy is already inside.” 他看着爸爸说:“Daddy go inside, too.”
前几天看天线宝宝的时候,也非得把我和我妈妈牵到电视机面前:“Bangbang go inside television.” 没想到脚碰到电视机屏幕却被挡住了。他以为天线宝宝就在电视机里,走进去就能和他们一起玩耍了。
棒棒想起企鹅来,叫道:“Penguine, penguine.”
妈妈:“where's the penguine?”
棒棒爬到自己小床上翻被子:“Over there, under cover.”
写贴的时候外边在放烟火,棒棒是个烟花迷,我们经常一起趴在窗前看烟花。春节的时候每每放完刚买的烟火,一转身他又自己跑去街对角的小店,还边走边说:“棒棒自己去买烟花,OK?”。可惜这个时候棒棒睡着了,不然他肯定要趴在窗前看。顺便贴点烟火的词句。
a firework display
put on a five-hour firework show
let off the fireworks
shoot off fireworks
set off firecrackers (鞭炮)
explode firecrackers
Fireworks are puffing all around.
The fireworks banged impressively.
The firecracker gave off ear-splitting bangs.
The rockets bursted into blazing reds and brilliant blues
Fireworks shooted into the sky and exploded into hundreds of sparks.
我问棒棒舅舅,烟火五颜六彩是不是加了颜料,被大笑:“不同的化学物质燃烧时释放出不同的颜色,中学里都有学过啊。” 在http://mychemistry.net/fire.html找了点资料,为棒棒以后要问的“十万个为什么?”做准备。
Ingredients : fuel, providing heat, and oxidizer(氧化剂) providing more oxygen than ambient air can supply, to accelerate reaction and burning. sparklers are made of medium-sized grains of fuel and oxidizer to get the fire going, mixed with even bigger aluminum grains. Ignited those grains burn using oxygen in the air, giving off sparks. Aluminum burning at 2,700 degrees F (1,500 degrees C) produces golden sparklers. At 5,400 degrees F (3,000 degrees C) aluminum produces white sparks.
You see fireworks colors as they cool. Electrons goosed by exploding gunpowder and desperate to return to their usual state release excess energy by emitting light. Their chemicals emit light at a specific wavelength, producing a specific color: strontium(锶) = red, copper (铜)= blue, barium(钡) = green, sodium(钠)= yellow/orange. Like combining crayon colors, combining color chemicals gives additional colors. Strontium (red) + copper (blue) = purple. Calcium deepens colors, titanium(钛) makes sparks, and zinc creates smoke clouds.
Chemists use color chemical pellets (弹丸) as big as sugar cubes mixing colorant (着色剂) and fuel to the right degree and with the right-size particles so pellets burn at the desired rate.
Why do fireworks have shape and sound?
Whistling: fuel in cardboard tubes open on one end burn inside the tube. CO2 rushes whistling out the open end.
Shapes of exploding lights depend on how fuel and colorants are packed. If the explosive charge (炸药)is in the middle, surrounded by sodium pellets, the timer fuse(导火线) ignites the sodium and shoots it out in that familiar yellow/orange circle. Two rows of color pellets around a central bomb gives a double ring. If the shell's inside is an interspersed(夹杂) mix of fuel and color the explosion ignites the colorant to spread and shower as a glowing willow tree. For tricky shapes like stars or hearts color pellets are pasted on paper in the desired pattern and put in the middle of the shell with explosive charges above and below it. Charges going off burn the paper, sending ignited color pellets out in the pattern they were in on the paper, spreading wider apart as they fly.
数理化是我的死穴,这个网页看到我脑大。但是我希望棒棒将来能学好科学,所以自己必须首先要加油。
[ 本帖最后由 emerald2008 于 2011-2-17 11:35 编辑 ] |
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