Comment on life pro tip!!

• 69420@lemmy.world ⁨1⁩ ⁨month⁩ ago

  I think more people know what uranium is. I, for one, had never heard of osmium until right now. Jokes are funnier if you don’t have to explain them.

  source
• phcorcoran@lemmy.world ⁨1⁩ ⁨month⁩ ago

  Picking a higher density of the material just means the one gram would occupy less volume, it doesn’t affect how much energy that gram is equivalent to in terms of E=mc2. For that calculation, as the equation implies, only the mass matters; a gram of feathers is equivalent to the same amount of energy as a gram of lead for that equation. Now, this equation is in fact a simplified assumption; if you launch your feather at relativistic speed, then we’re talking

  source

  • henfredemars@infosec.pub ⁨1⁩ ⁨month⁩ ago

    This is true. This is why I compared them using the fixed volume of one cubic centimeter rather than using something like specific gravity. The only thing that differs is the mass.

    source
• Chestnut@lemmy.world ⁨1⁩ ⁨month⁩ ago

  How much more matter is in a gram of osmium than in a gram of uranium?

  source

  • henfredemars@infosec.pub ⁨1⁩ ⁨month⁩ ago

    Given that mass behaves the same regardless of what is providing that mass in a gravity field, I imagine it simply the ratio of the weights. I’m assuming NewtonIan physics here.

    Osmium is 22.59 g/cm3. Uranium is 19.1 g/cm3

    I would therefore expect about 10% percent more energy if it was made of osmium, simply equating mass and energy here with the famous crazy-haired guy equation.

    source