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(地(dì )动(dòng )仪(yí ),地(dì )动(dòng )仪(yí ))

候(hòu )风(fēng )地(dì )动(dòng )仪(yí )的(de )简(jiǎn )称(chēng )。

东(dōng )汉(hàn )天(tiān )文(wén )学(xué )家(jiā )张(zhāng )衡(héng )所(suǒ )发(fā )明(míng )的(de )世(shì )界(jiè )上(shàng )最(zuì )早(zǎo )的(de )地(dì )震(zhèn )仪(yí )。用(yòng )铜(tóng )铸(zhù )造(zào ),形(xíng )如(rú )酒(jiǔ )樽(zūn ),顶(dǐng )上(shàng )有(yǒu )凸(tū )起(qǐ )的(de )盖(gài ),周(zhōu )围(wéi )有(yǒu )八(bā )个(gè )龙(lóng )头(tóu )对(duì )准(zhǔn )八(bā )个(gè )方(fāng )向(xiàng ),每(měi )条(tiáo )龙(lóng )的(de )嘴(zuǐ )裡(lǐ )含(hán )着(zhe )一(yī )个(gè )小(xiǎo )铜(tóng )球(qiú )。对(duì )着(zhe )龙(lóng )嘴(zuǐ )有(yǒu )八(bā )个(gè )铜(tóng )蛤(há )蟆(má ),昂(áng )头(tóu )张(zhāng )嘴(zuǐ ),蹲(dūn )于(yú )地(dì )上(shàng )。哪(nǎ )裡(lǐ )发(fā )生(shēng )地(dì )震(zhèn ),对(duì )准(zhǔn )那(nà )个(gè )方(fāng )向(xiàng )的(de )龙(lóng )嘴(zuǐ )就(jiù )会(huì )张(zhāng )开(kāi ),嘴(zuǐ )裡(lǐ )的(de )铜(tóng )球(qiú )就(jiù )落(luò )到(dào )铜(tóng )蛤(há )蟆(má )的(de )嘴(zuǐ )裡(lǐ )。

《后(hòu )汉(hàn )书(shū )·张(zhāng )衡(héng )传(chuán )》:“阳(yáng )嘉(jiā )元(yuán )年(nián ),复(fù )造(zào )候(hòu )风(fēng )地(dì )动(dòng )仪(yí )……验(yàn )之(zhī )以(yǐ )事(shì ),合(hé )契(qì )若(ruò )神(shén )。自(zì )书(shū )典(diǎn )所(suǒ )记(jì ),未(wèi )之(zhī )有(yǒu )也(yě )。尝(cháng )一(yī )龙(lóng )机(jī )发(fā )而(ér )地(dì )不(bú )觉(jiào )动(dòng ),京(jīng )师(shī )学(xué )者(zhě )咸(xián )怪(guài )其(qí )无(wú )徵(zhēng ),后(hòu )数(shù )日(rì )驿(yì )至(zhì ),果(guǒ )地(dì )震(zhèn )陇(lǒng )西(xī ),于(yú )是(shì )皆(jiē )服(fú )其(qí )妙(miào )。自(zì )此(cǐ )以(yǐ )后(hòu ),乃(nǎi )令(lìng )史(shǐ )官(guān )记(jì )地(dì )动(dòng )所(suǒ )从(cóng )方(fāng )起(qǐ )。”

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