WeniTheElder

8 ms·

1. 1.▲
   by WeniTheElder 2y ago

   I still dont grasp what a spin of an electron is. The image of a spinning sphere doesnt help - as if you can roll this sphere you will see there is no different spin - it has only one spin direction and you cant differ two spheres apart by
2. 2.▲
   Personal way to prevent infection instead social restrictions?(health.usnews.com)

   2 points by WeniTheElder 6y ago|0 comments
3. 3.▲
   by WeniTheElder 6y ago

   Harvesting hair and organs for profit. I guess they can meet this level.
4. 4.▲
   by WeniTheElder 6y ago

   Between two charged particles (electric or maybe neutral particles by gravity) is some force. Moving them away will require energy. So e.g. you put two charged particles in this expanding space, the ongoing expansion will cause some energy
5. 5.▲
   by WeniTheElder 8y ago

   We observe from a far distant star the red shifted spectrum. This is explained by the expansion of the galaxy and the expanding room between us and this star. So the photons coming from there have a red-shifted and hence lesser engery. What