• 0 Posts
  • 118 Comments
Joined 9 months ago
cake
Cake day: October 6th, 2023

help-circle










  • 1: you need to launch something at 8200m/s to get into low earth orbit. That’s not counting air resistance, or equatorial benefits, so let’s ignore both.

    2: gravity acceleration is 10 meters per per second. So 5 time gravity is 50 meters per second per second (50m/s^2). An aircraft carrier catapult accelerates at about 4g, but let’s go with 5.

    3: to launch something into orbit, from a railgun at 5g, you need to accelerate for 8200/50=164 seconds. Your average speed will be 4100m/s for 164 seconds.

    4: a 5g orbital railgun will have to be 4100x164=672km long. And probably still crush any sattelite you want to put on it.

    5: if you just want to use as a boosting step, a 10km long railgun will boost you at 5g for 20 seconds, making your final speed all of 1000m/s at ground level.

    Conclusion: China is lying, or stupid.







  • Beliefs can’t, but those beliefs generally come from somewhere, and those books tend to be full of testable claims.

    And those tests generally fail, meaning we can only assume those sources are not really literally true. And if they’re not true, you’re really just making stuff up as you go along and assuming things are true as you see fit.

    Now, there’s nothing wrong with making stuff up, I do it all the time for table top gaming. But I don’t base my worldview on the stuff I just imagine into being

    Deism isn’t incompatible with science, but any god who does stuff can be tested. Since I’ve never seen a single paper published showing any evidence for any god, I can only assume that either no gods exist, or they don’t do anything. For me, those are basically the same thing.