張(zhang)衡所處的(de)(de)東漢(han)時代(dai),地(di)(di)震(zhen)(zhen)(zhen)比(bi)較頻繁。據(ju)《后漢(han)書·五行志(zhi)》記載,自和(he)帝永元(yuan)(yuan)四年(nian)(nian)(公(gong)元(yuan)(yuan)92年(nian)(nian))到(dao)安帝延光四年(nian)(nian)(公(gong)元(yuan)(yuan)125年(nian)(nian))的(de)(de)三(san)十(shi)多年(nian)(nian)間,共(gong)發(fa)生了二十(shi)六次大的(de)(de)地(di)(di)震(zhen)(zhen)(zhen)。地(di)(di)震(zhen)(zhen)(zhen)區有時大到(dao)幾十(shi)個(ge)郡,引(yin)起地(di)(di)裂山崩、房屋倒(dao)塌、江河泛濫,造成(cheng)了巨大的(de)(de)損失。張(zhang)衡對地(di)(di)震(zhen)(zhen)(zhen)有不少親身體驗。為了掌握全(quan)國地(di)(di)震(zhen)(zhen)(zhen)動態,他經過長年(nian)(nian)研究,終于在陽嘉元(yuan)(yuan)年(nian)(nian)(公(gong)元(yuan)(yuan)132年(nian)(nian))發(fa)明了候風地(di)(di)動儀(yi)(yi)──世界上第(di)一(yi)架(jia)地(di)(di)震(zhen)(zhen)(zhen)儀(yi)(yi)。當時利(li)用(yong)這架(jia)儀(yi)(yi)器成(cheng)功地(di)(di)測報了西(xi)部地(di)(di)區發(fa)生的(de)(de)一(yi)次地(di)(di)震(zhen)(zhen)(zhen),引(yin)起全(quan)國的(de)(de)重視。這比(bi)起西(xi)方國家用(yong)儀(yi)(yi)器記錄(lu)地(di)(di)震(zhen)(zhen)(zhen)的(de)(de)歷史早一(yi)千七百多年(nian)(nian)。
但由于(yu)歷史久遠張衡(heng)地動(dong)儀已經失傳,沒有留下實物與圖樣只(zhi)留下一些簡略(lve)的文字記載。
現代以來中外(wai)很多人為(wei)復原張衡地(di)(di)動議做(zuo)了(le)很多努力(li),在歷史文獻中新發掘(jue)出了(le)一些(xie)關于張衡和他的(de)地(di)(di)動儀(yi)的(de)文字記載。
張衡地動(dong)儀的史(shi)書(shu)記載(zai):
【南朝】范曄(398年-445年) ,根(gen)據前(qian)人撰述的幾十種有(you)關后(hou)漢的歷史著作(zuo),編寫(xie)成《后(hou)漢書》。 其(qi)中《后(hou)漢書·張衡列傳》記載候風地動儀共196字(zi):
“陽嘉元(yuan)年,復造候風(feng)地動儀。以精銅鑄成,員徑八尺,合(he)(he)蓋隆起,形(xing)似酒尊(zun),飾以篆文山龜鳥(niao)獸之形(xing)都柱,傍行八道(dao),施關發(fa)機。外有八龍,首銜銅丸,下(xia)有蟾蜍(chu),張口承之。其牙(ya)機巧(qiao)制,皆(jie)(jie)隱在尊(zun)中,覆(fu)蓋周密無際。如有地動,尊(zun)則振龍機發(fa)吐丸,而蟾蜍(chu)銜之。振聲激揚,伺者因此(ci)覺(jue)(jue)知。雖一龍發(fa)機,而七(qi)首不(bu)(bu)動,尋其方面,乃(nai)知震(zhen)之所(suo)在。驗(yan)之以事,合(he)(he)契(qi)若神。自書典所(suo)記(ji),未之有也。嘗(chang)一龍機發(fa)而地不(bu)(bu)覺(jue)(jue)動,京師學(xue)者咸(xian)怪其無征(zheng),后(hou)數日(ri)驛至,果(guo)地震(zhen)隴西,于是皆(jie)(jie)服其妙。自此(ci)以后(hou),乃(nai)令(ling)史官記(ji)地動所(suo)從方起。”
【晉】袁宏(328年(nian)-376年(nian))的(de)《后(hou)(hou)漢紀·順帝紀》記載候風地(di)動(dong)(dong)儀:“衡作地(di)動(dong)(dong)儀,以銅為(wei)器,圓(yuan)徑八(ba)尺(chi),形似酒樽(zun),合(he)蓋(gai)充隆,飾以山龜鳥獸。樽(zun)中有(you)都柱,傍行八(ba)道,施關發(fa)機;外有(you)八(ba)方(fang)兆(zhao)龍(long),首銜銅丸(wan),蟾蜍(chu)(chu)承(cheng)之(zhi)。其(qi)牙(ya)機巧制,皆隱樽(zun)中,張訖,覆之(zhi)以蓋(gai),周密無際,若一體焉。地(di)動(dong)(dong)搖樽(zun),所從(cong)來龍(long)機發(fa)則吐丸(wan),蟾蜍(chu)(chu)張口(kou)受之(zhi)。丸(wan)聲震揚,伺音(yin)覺(jue)知,即(ji)有(you)龍(long)機,其(qi)余七首不發(fa),則知地(di)震所起從(cong)來也(ye)。合(he)契若神,自此之(zhi)后(hou)(hou),地(di)動(dong)(dong)史(shi)官注記,記所從(cong)方(fang)起。來觀(guan)之(zhi)者,莫不服其(qi)奇。”
【西晉】司(si)馬彪(XX--306年(nian))《續漢(han)書》記載候(hou)風地動儀:“張衡性精(jing)微(wei),有(you)巧(qiao)藝(yi)。作地動儀,以精(jing)銅鑄其(qi)(qi)器,圓徑八(ba)尺,形似傾樽(zun);其(qi)(qi)蓋穹(qiong)隆,飾以篆(zhuan)文;外(wai)有(you)八(ba)龍(long),首銜銅丸(wan),下有(you)蟾(chan)蜍承之(zhi)。其(qi)(qi)牙發(fa)機(ji)(ji),皆(jie)隱在樽(zun)中,周密(mi)無(wu)際,如一(yi)體(ti)焉。地動機(ji)(ji)發(fa),龍(long)即(ji)吐丸(wan),蟾(chan)蜍張口受(shou)丸(wan),聲乃振揚。司(si)者覺(jue)知(zhi),即(ji)省龍(long)機(ji)(ji),其(qi)(qi)馀七首不(bu)發(fa),則知(zhi)地震所(suo)從(cong)起來也。合契若(ruo)神,觀(guan)之(zhi)莫(mo)不(bu)服(fu)其(qi)(qi)奇麗。自古(gu)所(suo)來,未嘗(chang)有(you)也。”(取(qu)自【北宋】李昉(fang)《太(tai)平御(yu)覽·工藝(yi)部》)
對于(yu)三個記載(zai)候風地動(dong)儀的史書(shu),《后(hou)漢(han)(han)(han)紀》比(bi)《后(hou)漢(han)(han)(han)書(shu)》早約69年,《續(xu)漢(han)(han)(han)書(shu)》比(bi)《后(hou)漢(han)(han)(han)書(shu)》早約139年,從(cong)記載(zai)的原始(shi)性看,《續(xu)漢(han)(han)(han)書(shu)》優(you)于(yu)《后(hou)漢(han)(han)(han)紀》,《后(hou)漢(han)(han)(han)紀》又優(you)于(yu)《后(hou)漢(han)(han)(han)書(shu)》。
地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)無(wu)(wu)法記錄(lu)(lu)(lu)發震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)時(shi)刻(ke),更無(wu)(wu)法記錄(lu)(lu)(lu)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)級。因(yin)此(ci),從(cong)(cong)現代地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)學的(de)(de)(de)角度(du)來看(kan),候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)并不(bu)(bu)能(neng)(neng)(neng)(neng)(neng)記錄(lu)(lu)(lu)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen),不(bu)(bu)是(shi)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)儀(yi)(yi)。一(yi)(yi)(yi)(yi)(yi)(yi)些(xie)(xie)科技史(shi)著(zhu)(zhu)作(zuo)聲稱(cheng),張衡在(zai)公元132年制(zhi)造(zao)(zao)的(de)(de)(de)“候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)”能(neng)(neng)(neng)(neng)(neng)夠準確記錄(lu)(lu)(lu)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen),比西(xi)方(fang)第一(yi)(yi)(yi)(yi)(yi)(yi)臺(tai)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)儀(yi)(yi)(由意大利人(ren)路吉·帕米里制(zhi)造(zao)(zao)于(yu)1856年)早了(le)1700多(duo)(duo)年。也(ye)(ye)有(you)(you)(you)些(xie)(xie)材料說,候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)可(ke)(ke)(ke)(ke)以(yi)“預(yu)測(ce)(ce)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)”。不(bu)(bu)過(guo),史(shi)書(shu)中(zhong)(zhong)(zhong)(zhong)有(you)(you)(you)關(guan)候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)的(de)(de)(de)記載,僅見于(yu)《后漢書(shu)》。這一(yi)(yi)(yi)(yi)(yi)(yi)段記載只有(you)(you)(you)區區196字,其中(zhong)(zhong)(zhong)(zhong)描述地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)內部(bu)(bu)結構(gou)的(de)(de)(de)內容更只有(you)(you)(you)“中(zhong)(zhong)(zhong)(zhong)有(you)(you)(you)都柱,傍(bang)行八道(dao),施關(guan)發機(ji)”這12個意義隱晦(hui)、眾(zhong)說紛紜的(de)(de)(de)字。以(yi)后,北齊(qi)的(de)(de)(de)信(xin)都芳和(he)(he)隋(sui)朝的(de)(de)(de)臨孝恭,也(ye)(ye)都制(zhi)造(zao)(zao)過(guo)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi),還留下了(le)相關(guan)著(zhu)(zhu)作(zuo),可(ke)(ke)(ke)(ke)惜(xi)他(ta)們(men)的(de)(de)(de)著(zhu)(zhu)作(zuo)都亡佚了(le)。顯然,僅根據《后漢書(shu)》中(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)簡陋記載,要(yao)復原張衡的(de)(de)(de)候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)根本(ben)不(bu)(bu)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)(neng)。今天的(de)(de)(de)復制(zhi)品,其實(shi)是(shi)在(zai)史(shi)書(shu)那些(xie)(xie)“約束條件”之下所作(zuo)的(de)(de)(de)新創造(zao)(zao)。盡管(guan)如(ru)(ru)此(ci),《后漢書(shu)》的(de)(de)(de)記載,還是(shi)向(xiang)(xiang)(xiang)(xiang)我(wo)們(men)提供(gong)了(le)一(yi)(yi)(yi)(yi)(yi)(yi)些(xie)(xie)有(you)(you)(you)用信(xin)息。首先,候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)絕不(bu)(bu)是(shi)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)預(yu)測(ce)(ce)儀(yi)(yi)。它(ta)(ta)只有(you)(you)(you)在(zai)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)發生(sheng)之后才(cai)起作(zuo)用,只不(bu)(bu)過(guo)能(neng)(neng)(neng)(neng)(neng)比從(cong)(cong)驛卒更早地(di)(di)(di)(di)(di)(di)(di)通知(zhi)(zhi)京城(cheng)的(de)(de)(de)人(ren)士罷(ba)了(le)。這就(jiu)好比我(wo)們(men)看(kan)到(dao)(dao)閃(shan)電,就(jiu)知(zhi)(zhi)道(dao)接(jie)下來很可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)(neng)會聽(ting)到(dao)(dao)雷聲,但(dan)在(zai)閃(shan)電發生(sheng)時(shi),雷聲也(ye)(ye)已經同時(shi)發生(sheng),只不(bu)(bu)過(guo)還沒有(you)(you)(you)傳到(dao)(dao)我(wo)們(men)耳(er)朵里罷(ba)了(le)其次(ci),根據地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)波(bo)(bo)(bo)(bo)的(de)(de)(de)傳播機(ji)理,候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)是(shi)不(bu)(bu)太可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)(neng)做(zuo)到(dao)(dao)“驗之以(yi)事,合契若神”的(de)(de)(de)。地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)發生(sheng)時(shi),從(cong)(cong)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)源(yuan)(yuan)(yuan)會發出(chu)(chu)(chu)兩種(zhong)波(bo)(bo)(bo)(bo):一(yi)(yi)(yi)(yi)(yi)(yi)種(zhong)叫(jiao)P波(bo)(bo)(bo)(bo),是(shi)縱波(bo)(bo)(bo)(bo),它(ta)(ta)引起的(de)(de)(de)物體(ti)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)方(fang)向(xiang)(xiang)(xiang)(xiang)和(he)(he)波(bo)(bo)(bo)(bo)的(de)(de)(de)前(qian)進方(fang)向(xiang)(xiang)(xiang)(xiang)一(yi)(yi)(yi)(yi)(yi)(yi)致;一(yi)(yi)(yi)(yi)(yi)(yi)種(zhong)叫(jiao)S波(bo)(bo)(bo)(bo),是(shi)橫波(bo)(bo)(bo)(bo),它(ta)(ta)引起的(de)(de)(de)物體(ti)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)方(fang)向(xiang)(xiang)(xiang)(xiang)和(he)(he)波(bo)(bo)(bo)(bo)的(de)(de)(de)前(qian)進方(fang)向(xiang)(xiang)(xiang)(xiang)垂直。P波(bo)(bo)(bo)(bo)的(de)(de)(de)速度(du)比S波(bo)(bo)(bo)(bo)快,因(yin)此(ci)最先到(dao)(dao)達(da)地(di)(di)(di)(di)(di)(di)(di)面,形成地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)波(bo)(bo)(bo)(bo)中(zhong)(zhong)(zhong)(zhong)的(de)(de)(de)初波(bo)(bo)(bo)(bo)。據初波(bo)(bo)(bo)(bo)的(de)(de)(de)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)方(fang)向(xiang)(xiang)(xiang)(xiang)就(jiu)可(ke)(ke)(ke)(ke)以(yi)知(zhi)(zhi)道(dao)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)源(yuan)(yuan)(yuan)方(fang)向(xiang)(xiang)(xiang)(xiang)。但(dan)初波(bo)(bo)(bo)(bo)非常微弱,因(yin)為它(ta)(ta)只能(neng)(neng)(neng)(neng)(neng)從(cong)(cong)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)源(yuan)(yuan)(yuan)直直地(di)(di)(di)(di)(di)(di)(di)向(xiang)(xiang)(xiang)(xiang)著(zhu)(zhu)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)波(bo)(bo)(bo)(bo)接(jie)收處地(di)(di)(di)(di)(di)(di)(di)面傳播的(de)(de)(de)P波(bo)(bo)(bo)(bo),而(er)這部(bu)(bu)分P波(bo)(bo)(bo)(bo)攜(xie)帶(dai)的(de)(de)(de)能(neng)(neng)(neng)(neng)(neng)量只占地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)波(bo)(bo)(bo)(bo)全部(bu)(bu)能(neng)(neng)(neng)(neng)(neng)量的(de)(de)(de)一(yi)(yi)(yi)(yi)(yi)(yi)小部(bu)(bu)分。如(ru)(ru)果候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)能(neng)(neng)(neng)(neng)(neng)敏(min)感(gan)到(dao)(dao)對“第一(yi)(yi)(yi)(yi)(yi)(yi)哨(shao)”初波(bo)(bo)(bo)(bo)就(jiu)做(zuo)出(chu)(chu)(chu)響應,那么(me)足以(yi)有(you)(you)(you)許多(duo)(duo)別的(de)(de)(de)和(he)(he)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)無(wu)(wu)關(guan)的(de)(de)(de)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong),比如(ru)(ru)在(zai)它(ta)(ta)附近跺腳,能(neng)(neng)(neng)(neng)(neng)引起它(ta)(ta)的(de)(de)(de)反應,從(cong)(cong)而(er)讓(rang)人(ren)誤把許多(duo)(duo)不(bu)(bu)是(shi)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)的(de)(de)(de)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)也(ye)(ye)當成是(shi)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)。但(dan)如(ru)(ru)果要(yao)讓(rang)候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)保持一(yi)(yi)(yi)(yi)(yi)(yi)定的(de)(de)(de)“遲(chi)鈍”性(xing),它(ta)(ta)又(you)有(you)(you)(you)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)(neng)無(wu)(wu)法“感(gan)覺”到(dao)(dao)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)的(de)(de)(de)初波(bo)(bo)(bo)(bo),直到(dao)(dao)之后的(de)(de)(de)各種(zhong)波(bo)(bo)(bo)(bo)陸續(xu)傳來時(shi)才(cai)被“驚醒”,可(ke)(ke)(ke)(ke)是(shi)這些(xie)(xie)遲(chi)來的(de)(de)(de)波(bo)(bo)(bo)(bo)的(de)(de)(de)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)動(dong)(dong)(dong)(dong)(dong)方(fang)向(xiang)(xiang)(xiang)(xiang)已經完全不(bu)(bu)能(neng)(neng)(neng)(neng)(neng)代表(biao)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)源(yuan)(yuan)(yuan)的(de)(de)(de)方(fang)向(xiang)(xiang)(xiang)(xiang)了(le)。何況,記錄(lu)(lu)(lu)一(yi)(yi)(yi)(yi)(yi)(yi)次(ci)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)必須有(you)(you)(you)三(san)個要(yao)素:發震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)時(shi)刻(ke),震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)中(zhong)(zhong)(zhong)(zhong)位置(zhi)和(he)(he)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)級(地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)強度(du))。候(hou)(hou)風(feng)(feng)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)只能(neng)(neng)(neng)(neng)(neng)記錄(lu)(lu)(lu)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)中(zhong)(zhong)(zhong)(zhong)方(fang)向(xiang)(xiang)(xiang)(xiang)。幾(ji)臺(tai)地(di)(di)(di)(di)(di)(di)(di)動(dong)(dong)(dong)(dong)(dong)儀(yi)(yi)“聯網”也(ye)(ye)可(ke)(ke)(ke)(ke)測(ce)(ce)出(chu)(chu)(chu)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)中(zhong)(zhong)(zhong)(zhong)位置(zhi);但(dan)它(ta)(ta)卻無(wu)(wu)法記錄(lu)(lu)(lu)發震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)時(shi)刻(ke),所以(yi),這當然也(ye)(ye)就(jiu)更不(bu)(bu)可(ke)(ke)(ke)(ke)能(neng)(neng)(neng)(neng)(neng)是(shi)“世界上第一(yi)(yi)(yi)(yi)(yi)(yi)臺(tai)地(di)(di)(di)(di)(di)(di)(di)震(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)儀(yi)(yi)”了(le)。