アルベルト・アインシュタインのインスタグラム(alberteinstein) - 5月18日 21時56分

If you race toward a beam of light, why doesn't the light approach you faster than the speed of light? If you race away from it, why doesn't the light approach you slower than the speed of light? Physicist Brian Greene describes the relativistic velocity combination law to provide an answer.

@brian_greene111 @worldscifest #yourdailyequation

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