However, scientists are concerned that the mass of this cylinder seems to be changing. Housed under three bell jars and locked in a safe in a suburb of Paris, France, the cylinder has been taken out only three times in a century.
उन्होंने चिताया: “सरकार हमेशा यही कहती रहती है कि जवानों को जमकर कसरत करनी चाहिए ।