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Question Number 120331 by Dwaipayan Shikari last updated on 30/Oct/20

Commented by Dwaipayan Shikari last updated on 30/Oct/20

$$OldunansweredQuestion.Butiwanttodiscussit$$

Commented by MJS_new last updated on 30/Oct/20

$$\mathrm{half}\mathrm{speed}\mathrm{of}\mathrm{light}\mathrm{means}\mathrm{that}\mathrm{one}\mathrm{hour}\mathrm{on}$$$$\mathrm{the}\mathrm{train}\mathrm{is}1/\sqrt{1-{\left(\frac{1}{2}\right)}^2}=\frac{2}{\sqrt{3}}\mathrm{hours}\mathrm{on}\mathrm{the}$$$$\mathrm{platform}.{\mathrm{it}}^{\prime }\mathrm{s}\mathrm{simply}\mathrm{not}\mathrm{fast}\mathrm{enough}...$$

Commented by Dwaipayan Shikari last updated on 30/Oct/20

$$Butinlongtimeintervalitwillbeaverybigdifference$$$$.Amusingbutitistrue:)$$$$Doyouplaypianosir?$$

Commented by Dwaipayan Shikari last updated on 30/Oct/20

$$Soasperthistheorylighthasnotime?$$$$\frac{1}{\sqrt{1-1^2}}\to Undefinedor{doesn}^{\prime }texist$$$$Iamjustlearningthisandigetamused.Suchanwonderful$$$$thinkingofspace-time$$

Commented by MJS_new last updated on 30/Oct/20

$$\mathrm{the}\mathrm{dilatation}\mathrm{is}\sqrt{1-\frac{v^2}{c^2}}\mathrm{and}\mathrm{indeed}\mathrm{at}\mathrm{the}$$$$\mathrm{speed}\mathrm{of}\mathrm{light}\mathrm{time}\mathrm{stands}\mathrm{still},\mathrm{mass}\mathrm{and}$$$$\mathrm{energy}\to \mathrm{\infty }\mathrm{and}\mathrm{length}\to 0$$$$\mathrm{but}{\mathrm{it}}^{\prime }\mathrm{s}\mathrm{hard}\mathrm{to}\mathrm{explain}\mathrm{or}\mathrm{understand}\mathrm{some}$$$$\mathrm{of}\mathrm{the}\mathrm{side}\mathrm{effects}...$$

Commented by MJS_new last updated on 30/Oct/20

$$...\mathrm{and}\mathrm{no},\mathrm{I}\mathrm{play}\mathrm{all}\mathrm{kinds}\mathrm{of}\mathrm{guitars}\mathrm{but}\mathrm{no}$$$$\mathrm{keyboards}\mathrm{although}\mathrm{I}\mathrm{am}\mathrm{able}\mathrm{to}\mathrm{compose}$$$$\mathrm{on}\mathrm{piano}\mathrm{I}\mathrm{cannot}\mathrm{play}\mathrm{it}...\mathrm{sounds}\mathrm{weird}\mathrm{but}$$$${\mathrm{it}}^{\prime }\mathrm{s}\mathrm{true}$$

Commented by Dwaipayan Shikari last updated on 30/Oct/20

$$Iamnotsurethatiamtrue.WasMozartAustrianorGerman?$$

Commented by MJS_new last updated on 30/Oct/20

$$\mathrm{yes}\mathrm{and}\mathrm{no}.\mathrm{when}\mathrm{he}\mathrm{lived},\mathrm{Austria}{\mathrm{didn}}^{\prime }\mathrm{t}$$$$\mathrm{yet}\mathrm{exist}.\mathrm{there}\mathrm{had}\mathrm{been}\mathrm{several}\mathrm{principalities}.$$$$\mathrm{but}\mathrm{geographically}:\mathrm{yes}$$

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