Url:"why"sweating"egg,cuppingwhynotburntheskin......"Inordertounderstandtheseproblems,readingalonemaynotbeenough,butalsoneedthestudentstodotheirownexperiments,soastodeepentheunderstandingofknowledge.This"interestinglaboratory"columnwillbeinvitedtoourcityschoolsscienceteacher,thecombinationofbiological,http://www.qyjtzj.com/guestbook.asp,chemicalandphysicalknowledge,timeforeveryonetodoasimpleandinterestingexperiment,hopethatthroughexperimentstodevelopstudents'practicalability,gainknowledgeandfun.editor'snote:funlabwill"eat"theeggbottlea"waist"isbiggerthanthemouthoftheegg,howintobottles?TodayweinviteinterestinglaboratorytemperatureexperimentalschoolscienceteacherZhaoJun,giveyouabottleof"eat"eggexperiment.experimentalprocedure:first,thecookedeggsstrippedofeggshell.secondly,thecottonstainedwithalcohol,ortearthepaperstrip.Aftercompletionofthepreparatorywork,willlightcottonorpaperthrownintothebottle,thefireoutquicklyaftertheeggstandsinthebottle,immediatelyhandaway.Intheexperiment,wecansee,http://www.bjfshfe.com/E_GuestBook.asp,originallyerectedinthemouthoftheegg,slowly"thin",graduallyfromthemouthofthebottleslippedtothebottle.experimentalprinciple:willburnapieceofpaperorcottonintothebottle,bottleheatingvolumewillbeenlarged.Whenplacedontheeggs,duetothegradualreductioninthetemperatureofthebottle,thepressurebecomessmaller,andthepressureoutsidethebottle,itwillusetheroleofatmosphericpressuretosqueezetheeggintothebottle.experimentalmaterials:cookedeggs1,withthesandofthemouthofthemouthofthebottleof1,anumberofcottonorpaper,alcohollamp1thinkingdevelopment:ifabeveragesuckingwithtwoStraw(pictured),insertedinabeveragebottle,oneontheoutside,thenthesuctionforceatthesametime,http://lzqyjx.com/lzqyjx_GuestBook.asp,cansuckthebeverage?Why?reporterJiangQianqian[responsibleeditor:yfs001]url:“鸡蛋为什么会‘冒汗’，拔火罐为什么不会烫伤皮肤……”要想弄明白这些问题，光靠读书可能还不够，还得需要同学们自己动手做实验，这样才能加深对知识的理解。本报“趣味实验室”栏目将邀请我市各所学校的科学老师,花花公子男士凉鞋，结合生物、化学、物理等知识，定期为大家做简单又有趣的实验，希望通过实验能培养同学们的动手动脑能力，收获知识和乐趣。编者按：趣味实验室会“吃”鸡蛋的瓶子一个“腰围”比瓶口还大的鸡蛋，怎么钻进瓶子？今天的趣味实验室，我们邀请温中实验学校的科学老师赵军分,http://concrete-fem.com/forum/E_GuestBook.asp，给大家做个瓶子“吃”鸡蛋的实验,http://www.lwgjzxx.net/E_GuestBook.asp。实验步骤：首先，将熟蛋剥去蛋壳。其次，将棉花沾上酒精，或将纸片撕成长条状。准备工作完成后，将点燃的棉花或纸条扔进瓶子，火熄灭后迅速地将鸡蛋竖立在瓶口，立即将手移开,http://xfpa.xf.cn/guestbook.asp。实验中，我们可以看到,http://www.mctw54.org/E_GuestBook.asp，原本竖立在瓶口的鸡蛋，慢慢“瘦身”，渐渐地从瓶口滑落至瓶内。实验原理：将燃烧的纸片或棉花放入瓶子后，瓶子加热体积就会膨大。当放上鸡蛋后，由于瓶内的温度渐渐降低，压强就变小，而瓶子外的压强大，就会利用大气压的作用将鸡蛋挤压到瓶子内。实验材料：熟鸡蛋1个、装有沙子的细口瓶1个、棉花或者纸片若干、酒精灯1盏思维拓展：那如果用两个吸管吸饮料（如图），一根插在饮料瓶中,http://www.juyesq.org/E_GuestBook.asp，一根放在外面，然后同时用力吸，能吸到饮料吗？为什么呢？本报记者江倩倩[责任编辑:yfs001]