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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/WESUCAQ6TQHLIB3EX7J7U7M5LBQOJUO3/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "WESUCAQ6TQHLIB3EX7J7U7M5LBQOJUO3",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/NCCREU5IN435F76FTJX6NNHX5GMCX4R4/?format=api",
    "sender": {
        "address": "vk3jed (a) gmail.com",
        "mailman_id": "e049fcabdd4648088cd7ce227ab7c655",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/e049fcabdd4648088cd7ce227ab7c655/emails/?format=api"
    },
    "sender_name": "Tony Langdon",
    "subject": "[amsat-bb] Re: AMSAT-NA totally metric? and now almost totally off topic.",
    "date": "2007-01-22T06:43:55Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/GF4JG4RWKKDUQDTCB75P7LTUWDYA35ZO/?format=api",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/ZZPC77IMO5YH74S4XWFN6UCBGT2YSOLT/?format=api"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "At 03:38 PM 1/22/2007, Sil - ZL2CIA wrote:\n\n>Are you really weightless in space? Surely you're just in free fall. \n>When the  term \"weightless\" is used to describe the condition \n>astronauts experience, this is surely a literary term, rather than a \n>scientific one.\n\nAs it turns out, the answer is \"yes\" or \"no\".  It depends on your \nframe of reference and the definition you use.  Using the definition \nthat weight is the force exerted by gravity, then one would presume \nat a point near the Earth - Moon L1 point, you would be very nearly \nweightless (there would be some unbalanced gravitational influence of \nthe Sun most of the time, but you could move around and null that out too...).\n\n\n>Why spend the $20.000.000 (or 20,000,000 if that's your custom) you \n>mention, when you could achieve that same \"weightlessness\" by \n>jumping out of a building (if for a shorter time, of course, and \n>with a riskier outcome).\n\nA _much_ shorter time (remember air resistance quickly builds up so \nyou soon have the same reaction force from air resistance as you do \nstanding on the ground - i.e. you quickly reach terminal velocity).\n\n\n>Am I weightless when I jump off a chair?\n\nDepends who you ask, but most physics sources do say \"no\" as they \ndefine weight purely in terms of gravitation.\n\n\n>Are orbiting satellites \"weightless\"?\n\nSee above, but after looking at a number of sources, I'll concede \n\"no\" (assuming the strict gravitational definition of weight).\n\n73 de VK3JED\nhttp://vkradio.com\n\n",
    "attachments": []
}