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GET /hyperkitty/api/list/[email protected]/email/USMRW6DMP5RX3MATKL7BVBS5DUGPS4JF/?format=api
{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/USMRW6DMP5RX3MATKL7BVBS5DUGPS4JF/?format=api", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api", "message_id": "[email protected]", "message_id_hash": "USMRW6DMP5RX3MATKL7BVBS5DUGPS4JF", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/NGS2IH3YBG353CZSYY4MJAZUFAAGABKM/?format=api", "sender": { "address": "marsgal42 (a) hotmail.com", "mailman_id": null, "emails": null }, "sender_name": "laura halliday", "subject": "[amsat-bb] Re: Grid Square..Physical Size??", "date": "2007-07-02T01:05:32Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/NGS2IH3YBG353CZSYY4MJAZUFAAGABKM/?format=api", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Frank A Cahoy <[email protected]> asked\n\n>A friend and I were discussing the actual physical size of a grid square\n>in kilometers and or miles and we cannot come up with anything positive.\n>Can anyone reading this provide us with those actual numbers?\n>No real argument involved. Just a matter of curiosity.....\n>Thank you in advance...\n\n1 degree of latitude = 60 minutes = 60 nautical miles (by definition)\n\n1 nautical mile = 1.852 kilometers (by definition)\n\n1 degree of latitude = 60 * 1.852 = 111.12 km\n\n1 degree of longitude = 60 * 1.852 * cos(latitude) kilometers\n\nAt the equator, a grid square is approximately 222 by 111\nkilometers.\n\nAt 60 degrees north a grid square is approximately square,\nbecause cos(60) = 0.5\n\nIf you want to bore people at parties, geometry on a\nsphere, with great circles for lines, is an example of a\nRiemannian geometry, where (among other things) the\nsum of the angles in a triangle always exceeds 180\ndegrees.\n\nLaura Halliday VE7LDH \"Que les nuages soient notre\nGrid: CN89mg pied a terre...\"\nICBM: 49 16.05 N 122 56.92 W - Hospital/Shafte\n\n_________________________________________________________________\nVoici le nouveau Windows Live Hotmail. Faites la mise à niveau gratuitement \net voyez par vous-même. www.nouveauhotmail.ca?icid=WLHMFRCA123\n\n", "attachments": [] }