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Re: Speculation on water loss
Posted By: Grady	Date: 9/26/03 2:09 a.m.
In Response To: Re: Speculation on water loss (Grady) : I'm actually not convinced Halo gets its gravity by rotation. My reasoning is : as follows: In the opening cinematic of Pillar of Autumn, we see that the : ring is oblique to the sun, so that half of it is lighted and half is : dark. With that geometry, a Halo "day" will be exactly as long : as the rotation period. Now, to get Earth-level gravity (9.81 m/s^2) on a : "planet-sized" ring (assuming 6378 km radius, same as Earth's : mean equatorial radius), the ring needs to rotate once every 84 minutes. : Even to get half a gee, it would need to rotate every 119 minutes, and : this simply does not jibe with what we've seen in the game. The sun would : be over the horizon only 60 minutes at most, sunrise to sunset, and we'd : certainly be able to notice that in long outdoor levels like Halo or : Assault on the Control Room. In fact, we see fixed lighting which implies : (assuming Bungie wasn't being lazy, and they do indeed seem to pay : attention to details) that Halo has a fairly long day, on the scale of : Earth's. (In fact, to get one gee we'd need a ring 3.7 million km in : diameter, probably bigger than the gas giant Threshold's moon system, let : alone the planet itself.) Looks like Halo is rotating pretty fast after all. I just went into Pillar of Autumn and looked at the ring out the bridge front window before talking to Keyes, and it was rotating slowly but quickly enough to be visible. I guess Bungie just didn't feel like having the lighting change over the course of a level... I've seen speculation that Halo has low gravity; it would probably be possible to get a good estimate of the rotation rate from that vantage, so if we could find the radius, we could *calculate* the gravity. --Grady

Message Index

Speculation on water loss	Grady	9/25/03 1:29 a.m.
Re: Speculation on water loss	Infininja	9/25/03 3:58 p.m.
Re: Speculation on water loss	Grady	9/25/03 4:59 p.m.
Re: Speculation on water loss	Infininja	9/25/03 5:55 p.m.
Re: Speculation on water loss	AlianAnt	9/25/03 6:05 p.m.
Re: Speculation on water loss	Infininja	9/25/03 6:12 p.m.
Re: Speculation on water loss	Grady	9/25/03 10:14 p.m.
Re: Speculation on water loss	Viscily II	9/29/03 6:54 p.m.
Re: Speculation on water loss	Micahst	9/25/03 8:56 p.m.
Re: Speculation on water loss	Micahst	9/25/03 9:02 p.m.
Re: Speculation on water loss	Plastic Chicken	9/25/03 10:43 p.m.
Re: Speculation on water loss	Plastic Chicken	9/25/03 10:46 p.m.
Re: Speculation on water loss	Infininja	9/25/03 10:54 p.m.
Re: Speculation on water loss	Plastic Chicken	9/27/03 10:01 p.m.
Re: Speculation on water loss	Grady	9/26/03 12:16 a.m.
Re: Speculation on water loss	Grady	9/26/03 2:09 a.m.
Re: Speculation on water loss	Infininja	9/26/03 7:19 a.m.
Re: Speculation on water loss	Grady	9/26/03 12:12 p.m.
Re: Speculation on water loss	Infininja	9/26/03 1:21 p.m.
Re: Speculation on water loss	Plastic Chicken	9/28/03 1:25 a.m.
I meant m/s/s *NM* *NM*	Plastic Chicken	9/28/03 2:06 a.m.
Re: Speculation on water loss	Dwain	9/29/03 7:37 a.m.
Re: Flood alter the atmosphere?	Wado SG	9/29/03 1:21 p.m.