½ | ע
̬ ڽ ۺ
ǰλã > > >

2015-2-16 19:46|鿴:6568|:0|:С

ҪѴԼ819ܵ

ҪѴԼ819ܵƽ룩

ⲨٶȡеĹһҪΪcеceleritasΪѸݣcǿɼĴٶȣҲеŲеĴٶȡ

еĹٵ299,792,458/루1,079,252,848.8ǧ/СʱԼӽ (ÿ30)ٶȲһֵһ塣ļֵΪ299792500100/롣ʵλƵĻλ19831021𱻶Ϊ1/299,792,458ڴľ롣ʹӢƵλԼΪ186,282.397Ӣ/룬670,616,629.384Ӣ/СʱԼΪ1Ӣ/롣

κ͸߰͸Ľʣ粣ˮУٻήͣcȹijֽеٶȾֽʵʡĸıܹռʹͨ͹͸һȥƹϴ塣͸ЧӦݱ仯˵ĹڹⲨγֵIJ̶ȣ㷢ϵ;롣

ݰ˹̹ۣûκϢ˶ٶȿԳеĹ٣c

աĬ1676ƾоľľһʴһα˹޵ٶȣ̵أڴȲⶨ١1865꣬ղķ˹ˡ˹ΤһֵŲĵӦٶȡc1905꣬ء˹̹ٶپκιϵԣǶڹԴ˶ġͨƵ̽ĺʾcڹ͵ű֮ԡ͵ԽԽȷIJٶ1975걻֪Ϊ299,792,458 m/sʮڷ֮ĵIJ1983,ڹʵλױ¶Ϊд1299,792,458ľ롣˸׵Ķ壬cÿʾֵͱ̶

ٵ

ӽ£ѿϵáͬ뿪Լٶȣһ׷һֹ˻ͬٶȣ٣ճжٶȵĸ졣50km/hٶӭɳۣ˾оԷij50 + 50 = 100km/hʻԼֹԷ100km/hӭʻ졣ٶȽӽʱ򵥼ӷٶȲЧɴ90%ٵٶȣԵ˵ӭʱϵ˲оԷķɴ90% + 90% = 180%ٶӭֻԵ99.5%ĹٶʻɴӰ˹̹ٶȵʽó

u = {v + w \over 1 + v w / c^2}

vwǶԵ˵ɴٶȣuǸܵٶȣcǹ١

еĹ

һƶĵƲͼ㡣һɫĵ㣬زڵϣһɫĵ㣬λȺֵһɫĵ㣬λڲǰ

ͼٶƶ̵ȺٶƶԲǰٶƶ

ͼٶƶ̵ȺٶƶԲǰٶƶ

ʴ1ʱȺٶȵ cٶȸ c С1ʱٶȸ cȺٶȵ c ͼΪʴ1Ρ

OPERAĴ˴ʵλвɽĸʵ

ɳʵңLNGSʿߵŷо֯Уʵڶ16,111΢Ӳ¼Ĺ۲,ʾ΢ӵٶȳ40322.58֮һΪʵٶȵļޡ㷢֣ʵΪ豸·Ӵɡʵ201268ձС

ٵIJ

ٵ׼ȷֵͨ۲ľǶǵʳġתַת˶зƵⷨȹٲ

ִѧеŲɼ⣬еٶdzǹ١ǿ໥á໥ôٶȶǹ٣ٶҲǹ٣2003֤ʵݵѧĶɣŵŲٶȲӰŲٶȡԭ򣬹۲ߵIJοͷŹⲨٶȲӰ챻Ĺ٣Ӱ첨ơơ۵Ļֵ̽ǹٶǹ⣬΢ҲӰۡ

ߴӵԼ1.255

ߴӵԼ1.255

һЩڵѧң˹Լ˹պڡѿڣձΪ޵ġˡϿ1629һ飬һ˽Ʒӳһ澵ӣԼһӢԲ١٤Ϊ޵ģ1638Լһɽϣһƿʼʱɽϵ˿ƿһ˿ֹͣʱʷIJٵڵƷڹʵ̫죬ʵûгɹ

۲ⷨ

Ĭӵ۲ľһڱ

Ĭӵ۲ľһڱ١

1676꣬աĬʹԶоľǵǰŷ˶Ȳⶨ١ŷĹתʱΪɵĽľǵӰһʱ䣨ͼеCDĬ۲⵽ӽľʱH㣩ŷĹת42.5СʱԶľʱLKŷӰгֵʱԤԽԽԵΪľľӣʹ"ź"Ҫʱ䴫ݡҪ֮ͨӵľ룬ʹüʱźڵһκһ֮ӳ˶ʱ䡣ľǽӽʱFG෴Ĭ۲⵽ŷڽӽ40ڱԶ4022ӡĬЩ۲ΪΪ80йҪ໨22߰ŷ֮ӵľ롣ζŴLKFG80ŷڣ42.5Сʱʱ䣬ֻҪ22ӡӦһڹ̫˶͹֮һ

80\times \frac{42.5\,{\rm hours}}{22\,{\rm minutes}} \approx 9,300.

ζŹǵĹٶȵ9,300ڵֵ10,100Ƚϣ޼

ĵλڵʱĹֵǴԼ14ǧ˹ٰݸ˹ĵλĬʱƹÿӵٶǵֱ1,000ƺĬ22ӵ˼ΪǺԽѵʱ䡣൱ÿ220,000136,000Ӣڲõֵ26%Աȵʱʹ֪õֵΪѡ

ˡţҲܹ޵Ĺ1704ѧУÿӿԺԽ16.6Σ൱210,000/룬ȷֵ30%ƺԼƶϣȷ֪ǷûοĬݣĬͬԭ۲ľDZϵİߵתϵı仯Ҳ۲٤ǵͬ󡣵Ϊֹ۲Ǻѵģպķȡ.

ʹˣЩ۲⣬޵ԲܱĽܣѧҼӹᣩֱղķ˹ף1728Ĺ۲֮󣬹޵뷨ű׵޵ģΪĹٶȻʹִǹһ΢СǶȵƫۣνĹвĴСֻ1/200ȡ׵ĹΪ298,000/루185,000Ӣ/룩ڵֵֻв1%IJ졣вЧӦ19Ѿֵоѧſɷά桤˹³άde:Magnus Nyrn

е

1849꣬¡תַc = 3.153108 m/sǵһλʵ鷽ⶨٵʵߡʵ鷽£

Ӱ淴󣬾תijͶ侵ԭ·ءתһʱ䣬ʱȣͿ͸۲⵽⣬Ӷݳֵתټ١

1862꣬תеĹ٣ԭתַͬС죬Ľc = 2.98 108 m/s

λڵϲ⵽ٵ׵¡Ŧ1874Ľתַc = 2.9999 108 m/s

ء˶Ƶתβ١1879꣬c = (2.999100.00050) 108 m/s1882c = (2.998530.00060) 108 m/s

ۺתתַص㣬չת⾵19241927䣬c = (2.997960.00004) 108 m/s

˶еĹʱӦÿȺʣõȴǿʡһ1929걻淢1926ĽӦΪc = (2.997980.00004) 108 m/s = 2997984 km/s

ڵѧķչÿ˶СгǻǵȷٵIJⶨֱùѧһ

60ƵԴ󽵵͹ٲIJȷȡ

19730.004 ppm1983ʮ߽ʼеĹٶΪȷֵ

ٲ

ʽ٣km/sȷȣkm/s
1675աĬľ220 000
1849¡תַ315 300
1862ת298 000500
1907RosaDorseyESU/EMU¥299 78415
1928Karolus˶299 78615
1947Essenгǻ299 7924
1949Aslakson״299 792.42.4
1951Bergstand299 793.10.26
1954Froome΢299 792.750.3
1964Rank299 792.80.4
1972BayƵʼ299 792.4620.018
1973ƽ299 792.45800.0012
1974BlaneyƵCO2299 792.45900.0006
1976Woods299 792.45880.0002
1980BairdƵʼ299 792.45810.0019
1983Э299 792.4580 (ȷֵ)

¥ESUΪElectrostatic Unitsд
¥EMUΪElectromagnetic Unitsд

Դڻ
ݷadmin@tunisr.com

¼Ƭ

¼Ƭ

| ϵ | Ȩ | ˽ | |
Ȩ
Copyright © 2011-2020 All Rights Reserved.

ض