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Local Authors => Brandon Sanderson => Topic started by: jrh1524 on October 02, 2010, 05:18:33 PM

Title: Timespan for Stormlight Archives? (Spoilers)
Post by: jrh1524 on October 02, 2010, 05:18:33 PM
Has anyone asked Brandon what kind of timespan the 10 books of the Stormlight Archives series is going to cover?  I suspect it'll be about a year or two timespan, since the desolation is hanging over everyones' heads, but I'm not 100% sure.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Salkara on October 02, 2010, 07:01:04 PM
So far the novel has covered over 4,500 years  :P
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Fireborn on October 03, 2010, 05:14:12 AM
So far the novel has covered over 4,500 years  :P
lol

I'm really not sure.  I doubt we'll find out what kind of timespan we'll be looking at until book 2 so we can see what kind of gap we'll get between books.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Lord Terrisman on October 03, 2010, 06:08:12 PM
I'm guessing the time gap will probably be a little less than in between the Mistborn books ( because there was a year between each).  I think this because there still needs to be time for the events to set in but I'm pretty sure the whole Stormlight Archive series wont take place over the course of 20-30 years.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on October 03, 2010, 08:30:52 PM
1. “The love of men is a frigid thing, a mountain stream only three steps from the ice. We are his. Oh Stormfather…we are his. It is but a thousand days, and the Everstorm comes.”—Collected on the first day of the week Palah of the month Shash of the year 1171, thirty-one seconds before death. Subject was a darkeyed pregnant woman of middle years. The child did not survive.

1000 days doesn't seem like enough time for the series to take place in, given the bit we have so far.  I'm also a bit confused here, are the years 500 days?  (5 days a week, 10 weeks a month, 10 months a year)  And is a day in this series the same length as a day in our world?  Should we be multiplying their ages by 1.37 to get their age in our years?

Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Munin on October 03, 2010, 08:36:09 PM
1. “The love of men is a frigid thing, a mountain stream only three steps from the ice. We are his. Oh Stormfather…we are his. It is but a thousand days, and the Everstorm comes.”—Collected on the first day of the week Palah of the month Shash of the year 1171, thirty-one seconds before death. Subject was a darkeyed pregnant woman of middle years. The child did not survive.

1000 days doesn't seem like enough time for the series to take place in, given the bit we have so far.  I'm also a bit confused here, are the years 500 days?  (5 days a week, 10 weeks a month, 10 months a year)  And is a day in this series the same length as a day in our world?  Should we be multiplying their ages by 1.37 to get their age in our years?


You're assuming that the whole series has to take place before the Everstorm comes.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on October 03, 2010, 09:34:38 PM
Not exactly, what I said was: "1000 days doesn't seem like enough time for the series to take place in, given the bit we have so far."
We have various things to contend with, the inaccuracy of prophecies and the ability to alter/disrupt/inhibit the manifestation of a prophecy. 

We don't know the actual dates during the series, only in the epigraphs, which cover nearly(?) 1 and half years worth of time while the events in book aren't more than a few months, if that.  (Dalinar only has 4 visions during the course of the books, while highstorms are supposed to come ever other week or so.) If the Everstorm is that massive wall of destruction that Dalinar sees in the Almighty's vision, then I can't imagine much happening after that hits in the series. Edit: Unless the vision is just a metaphor for destruction.

Even the epigraph that I consider to be prophetic about Kalidan's chasm leap might have actually come after the fact, despite us seeing it earlier in the book than the actual event:
Quote
“Above the final void I hang, friends behind, friends before. The feast I must drink clings to their faces, and the words I must speak spark in my mind. The old oaths will be spoken anew.”—Dated Betabanan, 1173, 45 seconds pre-death. Subject: a lighteyed child of five years. Diction improved remarkably when giving sample.
Quote
Map of the Battle of the Tower, drawn and labeled by Navani Kholin, circa 1173.
There's one of our few vague/if solid dates.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: FollowYourMuse on October 06, 2010, 02:07:30 AM
What we do know on the timing in the books:
The Vengance pact  and the War on the shattered plains has been going on for 6 years.
Shallan leaves home and meets up with Jasnah 6 months later in Kharbaranth.
Shallan spends an additonal 2-3 months with Jasnah before the end of the book.

7.5 years agoTien was 10 and  Kaladin was 12
5.5 Years ago Kal is 15
5 Years ago Tien and Kaladin are conscripted into the army ( 4 year term)
Tien dies 4 months after joining. Took Kaladin a year before he pulled out of depression. Kaladin now 16-17)
Kaladin is 19 years old at the time he is in the Slave wagon arriving at the Shattered Plains 8 Months after leaving* Amarams Army.


Szeth becomes Truthless.
2 years Later Szeth Kills Gavilar.
5 more years yater Szeth is owned by Took and is in Bavland and is 35 years old.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Harakeke on October 06, 2010, 04:09:30 AM
Once again, the illustrations have bits of meta-information for us hardcore fans...

In 1167, a not-yet-dead King Gavilar commissioned a map of Roshar from one "Isasik Shulin"  ;), as well as a map of Alethkar.
All of the illustrations referencing the Parshendi Campagin are circa 1173.
This includes Navani's map of the Battle of the Tower and the nameless spearman's map of Sadeas' camp.
Also in 1173, the painter Vandonas visited the warcamps and later painted a picture of them from memory.

Kaladin leaves Amaram's army five years after Gavilar's murder.

Which by my calculation suggests (with an estimated error of +/- 1 year)...

YearWorld EventsSzethKaladinyBPKaladin's AgeSzeth's Age
(3332*)Heralds resign------4,505*------
1138---Szeth born---35------
1154------Kaladin born19---16
1156------Tien born17218
1166---Szeth becomes Truthless---71228
1167Gavilar comissions maps------61329
1168Gavilar diesSzeth kills GavilarKaladin & Tien conscripted51430
1171First death visionrecorded------21733
1173Battleof the TowerSzeth owned by TookKaladin leaves Amaram's army, arrives at Shattered plains 8 months later01935

*note: the prelude's date of 4,500 years before Gavilar's murder may be an estimate

edit: yeah, I'm definitely off a year someplace. Tien is 13 when he's conscripted "five years ago", according to ch. 44.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Fireborn on October 06, 2010, 06:31:03 PM
What does yBP stand for?
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Harakeke on October 06, 2010, 08:51:43 PM
What does yBP stand for?
Sorry -- archaeology shorthand.  "years before present"
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Peter Ahlstrom on October 06, 2010, 11:04:15 PM
I'm tempted to answer things like how many hours in the day, how long those hours are compared to our hours, how many minutes to the hour, etc. But I think I'll hold off a few months (or years...) and see what you can come up with just from the book.

But I will say that the "XX years later/ago" chapter timestamps in the book are only accurate to half a year. (Except for the eight months one.)

Also, "ago" is a moving target based on the timeline of the surrounding chapters.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Harakeke on October 07, 2010, 09:08:32 AM
If I recall... age is measured in terms of number of Weepings experienced (survived?), not by birth date.
Do we know when in the year Weepings fall?
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: nomti on October 07, 2010, 01:00:28 PM
If I recall... age is measured in terms of number of Weepings experienced (survived?), not by birth date.
Do we know when in the year Weepings fall?

Remember, seasons on Roshar last only a few weeks and don't follow any discernible pattern.  The only thing that repeats predictably is the Weepings.  So, they fall at the end.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on October 07, 2010, 04:48:19 PM
I'm tempted to answer things like how many hours in the day, how long those hours are compared to our hours, how many minutes to the hour, etc. But I think I'll hold off a few months (or years...) and see what you can come up with just from the book.

But I will say that the "XX years later/ago" chapter timestamps in the book are only accurate to half a year. (Except for the eight months one.)

Also, "ago" is a moving target based on the timeline of the surrounding chapters.

So if their days are 17.5 hours in our time, we don't need to really need to make any adjustments for them having more days in their years.  It looks like their hours might be a bit shorter than ours.  I wouldn't be surprised if there were 20 of their hours in a day, with the way the love multiples of 10 in this series.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Harakeke on October 07, 2010, 05:04:01 PM
Here's an editable table I made:
https://spreadsheets.google.com/ccc?key=0Al9mpDUN_8rSdGZIcU1DbFJ1amRLb2l6UVZwRWtEQ3c&hl=en&authkey=CPyvzssM

I still like the idea of 1173 being "the present", and with age measured in Weepings it seems to work out.
According to the table, Kaladin experienced a Weeping between leaving Amaram's army and arriving in the Shattered Plains.  Does anything in the text support this?
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: FollowYourMuse on October 09, 2010, 03:28:25 AM
Here's an editable table I made:
https://spreadsheets.google.com/ccc?key=0Al9mpDUN_8rSdGZIcU1DbFJ1amRLb2l6UVZwRWtEQ3c&hl=en&authkey=CPyvzssM

I still like the idea of 1173 being "the present", and with age measured in Weepings it seems to work out.
According to the table, Kaladin experienced a Weeping between leaving Amaram's army and arriving in the Shattered Plains.  Does anything in the text support this?
What I coukld find:
 Kaladin speaking with Tvlakv in Chapter 4 (pg 78 ebook)
Tvlakv says "Long ago? you can not be older tghan eighteen years, deserter."
It was a good guess, He was nineteen. Had it really only been four years since he'd joined Amaram's army?

Right before Kaladin suggests to the bridgemen that what else they could try  is escape, he is  tlaking with Syl, and ready to give up since "He Can't save them."  he finds a stone, and remembers Tien, and talks how he recognized what was happening, how he always felt mdespair take him duing the weeks of the Weeping.   This is only a hint, or it could have some other meaning, or none at all. Most likely it depresses him because there are no highstorms, and he has always probably gained something from those. 
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on December 16, 2010, 05:55:17 AM
I asked Brandon at the November 3rd signing.  He said that Roshar years are a bit longer than our years, but probably not by much.  He said a person who's 19 on Roshar would be more like 20 to us.  So their days are probably a little bit longer than the 17.5 Earth hours I was thinking they would be to make their 500 day year the same length as our 365 day year.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Peter Ahlstrom on December 16, 2010, 07:15:26 AM
20 hours per day, and their hour is like a minute or two shorter than our hour.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on December 16, 2010, 08:13:50 AM
In that case their year should be about 1.10 of our years, maybe I misremembered his reply a bit.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Peter Ahlstrom on December 16, 2010, 05:53:49 PM
Brandon has people to remember these things for him.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on December 16, 2010, 06:36:23 PM
There is quite a bit to remember he has to remember, isn't there?  We only have the details of one book out of 10.  He has a much clearer view of the whole thing, but Inkthinker and others are good for double-checking the minutiae embedded in that one book.  It was fun to hear him talk about Jordan's notes at the signing, basically, he'd write up a few questions about specific WoT details, then hand them off to Harriet and she and (I forget who else) would come back in a few weeks, once they actually found the answers among Jordan's voluminous notes.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Terrisman243 on December 17, 2010, 12:33:23 AM
Harakeke, you are awesome. You win an award for compilation and translation.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on December 17, 2010, 04:22:38 AM
It's a bit off-topic, but yes, Harakeke has achieved Indiana Jones (or, if you prefer, Master Keaton) levels of awesomeness.

I'm sorry, but that's I can't think up any more awesome, if fictional, archaeologists.

And no, I won't count that Da Vinci Code guy.  He's not even an archaeologist...
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Tasslehoof on December 20, 2010, 10:13:11 PM

Right before Kaladin suggests to the bridgemen that what else they could try  is escape, he is  tlaking with Syl, and ready to give up since "He Can't save them."  he finds a stone, and remembers Tien, and talks how he recognized what was happening, how he always felt mdespair take him duing the weeks of the Weeping.   This is only a hint, or it could have some other meaning, or none at all. Most likely it depresses him because there are no highstorms, and he has always probably gained something from those. 

I did think it was quite interesting that Weepings had a distinct effect (or at least appeared to) to Kaladin's mood.  The highstorms not being around could be the reason, since he draws his power from there, but I also think he might have a higher tie to the Almighty.  Dalinar and Kaladin could have some very interesting coversations, and might find that they are both connected to the Almighty.  I can't wait to see what the next book presents us.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on June 08, 2011, 01:22:23 AM
I checked out the 17th shard forum, where they were trying to figure out to understand the dates in the epigraphs, and I put the dates in a form from 1-500.  I'll repost here:

Quote
1= Jes
2= Nan
3= Chach
4= Vev
5= Palah
6= Shash
7= Betab
8= Kak
9= Tanat
10= Ishi

Quote
I think the dates in the years would be more readable here if we converted them to just numbers 1-500 to correspond to the sequential day of the year. So it would be (month's #-1)*50 + (week #-1)*5 + (day #). I'll put the some examples in parentheses. Edit 2: I'll grudgingly add Peter's method of dates in, since he's an authority on the series. Also, since there's no math involved I'm less likely to mess it up.

1. “The love of men is a frigid thing, a mountain stream only three steps from the ice. We are his. Oh Stormfather…we are his. It is but a thousand days, and the Everstorm comes.”—Collected on the first day of the week Palah of the month Shash of the year 1171, thirty-one seconds before death. Subject was a darkeyed pregnant woman of middle years. The child did not survive. (271) [6-5-1]
2. “You’ve killed me. Bastards, you’ve killed me! While the sun is still hot, I die!”—Collected on the fifth day of the week Chach of the month Betab of the year 1171, ten seconds before death. Subject was a darkeyed soldier thirty-one years of age. Sample is considered questionable. (315) [7-3-5]
3.“Ten orders. We were loved, once. Why have you forsaken us, Almighty! Shard of my soul, where have you gone?”—Collected on the second day of Kakash, year 1171, five seconds before death. Subject was a lighteyed woman in her third decade. (377) [8-6-2]
4.“A man stood on a cliffside and watched his homeland fall into dust. The waters surged beneath, so far beneath. And he heard a child crying. They were his own tears.”—Collected on the 4th of Tanates, year 1171, thirty seconds before death. Subject was a cobbler of some renown. (404) [9-1-4]
5.“I’m dying, aren’t I? Healer, why do you take my blood? Who is that beside you, with his head of lines? I can see a distant sun, dark and cold, shining in a black sky.”—Collected on the 3rd of Jesnan, 1172, 11 seconds pre-death. Subject was a Reshi chull trainer. Sample is of particular note. (8) [1-2-3]
6.“I have seen the end, and have heard it named. The Night of Sorrows, the True Desolation. The Everstorm.”—Collected on the 1st of Nanes, 1172, 15 seconds pre-death. Subject was a darkeyed youth of unknown origin. (51) [2-1-1]
7.“I’m cold. Mother, I’m cold. Mother? Why can I still hear the rain? Will it stop?”—Collected on Vevishes, 1172, 32 seconds pre-death. Subject was a lighteyed female child, approximately six years old. (196) [4-10-1]
8.“They are aflame. They burn. They bring the darkness when they come, and so all you can see is that their skin is aflame. Burn, burn, burn….”—Collected on Palahishev, 1172, 21 seconds pre-death. Subject was a baker’s apprentice. (249) [5-10-4]
9.“Victory! We stand atop the mount! We scatter them before us! Their homes become our dens, their lands are now our farms! And they shall burn, as we once did, in a place that is hollow and forlorn.”—Collected on Ishashan, 1172, 18 seconds pre-death. Subject was a lighteyed spinster of the eighth dahn. (477) [10-6-2]
10.“Ten people, with Shardblades alight, standing before a wall of black and white and red.”—Collected: Jesachev, 1173, 12 seconds pre-death. Subject: one of our own ardents, overheard during his last moments. (14) [1-3-4]
11.“Three of sixteen ruled, but now the Broken One reigns.”—Collected: Chachanan, 1173, 84 seconds pre-death. Subject: a cutpurse with the wasting sickness, of partial Iriali descent. (107) [3-2-2]
13.“I’m standing over the body of a brother. I’m weeping. Is that his blood or mine? What have we done?”—Dated Vevanev, 1173, 107 seconds pre-death. Subject: an out-of-work Veden sailor. (159) [4-2-4]
14.“He must pick it up, the fallen title! The tower, the crown, and the spear!”—Dated Vevahach, 1173, 8 seconds pre-death. Subject: a prostitute. Back ground unknown. (173) [4-5-3]
15.“The burdens of nine become mine. Why must I carry the madness of them all? Oh, Almighty, release me.”—Dated Palaheses, 1173, unknown seconds pre-death. Subject: a wealthy lighteyes. Sample collected secondhand. (201) [5-1-1]
16.“A woman sits and scratches out her own eyes. Daughter of kings and winds, the vandal.”—Dated Palahevan, 1173, 73 seconds pre-death. Subject: a beggar of some renown, known for his elegant songs. (217) [5-4-2]
17.“Light grows so distant. The storm never stops. I am broken, and all around me have died. I weep for the end of all things. He has won. Oh, he has beaten us.”—Dated Palahakev, 1173, 16 seconds pre-death. Subject: a Thaylen sailor. (239) [5-8-4]
18.“I hold the suckling child in my hands, a knife at his throat, and know that all who live wish me to let the blade slip. Spill its blood upon the ground, over my hands, and with it gain us further breath to draw.”—Dated Shashanan, 1173, 23 seconds pre-death. Subject: a darkeyed youth of sixteen years. Sample is of particular note. (257) [6-2-2]
(19)“And all the world was shattered!” Maps yelled, back arching, eyes wide, flecks of red spittle on his cheeks. “The rocks trembled with their steps, and the stones reached toward the heavens. We die! We die!” (No Date)
20.“ReShephir, the Midnight Mother, giving birth to abominations with her essence so dark, so terrible, so consuming. She is here! She watches me die!”—Dated Shashabev, 1173, 8 seconds pre-death. Subject: a darkeyed dock-worker in his forties, father of three. (284) [6-7-4]
21.“Above the final void I hang, friends behind, friends before. The feast I must drink clings to their faces, and the words I must speak spark in my mind. The old oaths will be spoken anew.”—Dated Betabanan, 1173, 45 seconds pre-death. Subject: a lighteyed child of five years. Diction improved remarkably when giving sample.(307) [7-2-2]
22.“The death is my life, the strength becomes my weakness, the journey has ended.”—Dated Betabanes, 1173, 95 seconds pre-death. Subject: a scholar of some minor renown. Sample collected secondhand. Considered questionable.(306) [7-2-1]
23.“In the storm I awaken, falling, spinning, grieving.”—Dated Kakanev, 1173, 13 seconds pre-death. Subject was a city guardsman. (359) [8-2-4]
24.“The darkness becomes a palace. Let it rule! Let it rule!”—Kakevah 1173, 22 seconds pre-death. A darkeyed Selay man of unknown profession. (370) [8-4-5]
25.“I wish to sleep. I know now why you do what you do, and I hate you for it. I will not speak of the truths I see.”—Kakashah 1173, 142 seconds pre-death. A Shin sailor, left behind by his crew, reportedly for bringing them ill luck. Sample largely useless. (380) [8-6-5]
26.“They come from the pit, two dead men, a heart in their hands, and I know that I have seen true glory.”—Kakashah 1173, 13 seconds pre-death. A rickshaw puller. (380) [8-6-5]
27.“I see them. They are the rocks. They are the vengeful spirits. Eyes of red.”—Kakakes 1173, 8 seconds pre-death. A darkeyed young woman of fifteen. Subject was reportedly mentally unstable since childhood. (386) [8-8-1]
28.“That chanting, that singing, those rasping voices.”—Kaktach 1173, 16 seconds pre-death. A middle-aged potter. Reported seeing strange dreams during highstorms during the last two years. (393) [8-9-3]
29.“Let me no longer hurt! Let me no longer weep! Daigonarthis! The Black Fisher holds my sorrow and consumes it!”—Tanatesach 1173, 28 seconds pre-death. A darkeyed female street juggler. Note similarity to sample 1172-89. (403) [9-1-3]
30.“They named it the Final Desolation, but they lied. Our gods lied. Oh, how they lied. The Everstorm comes. I hear its whispers, see its stormwall, know its heart.”—Tanatanes 1173, 8 seconds pre-death. An Azish itinerant worker. Sample of particular note. (406) [9-2-1]
31.“All is withdrawn for me. I stand against the one who saved my life. I protect the one who killed my promises. I raise my hand. The storm responds.”—Tanatanev 1173, 18 seconds pre-death. A darkeyed mother of four in her sixty-second year. (409) [9-2-4]

I probably screwed at least 1 or 2 up, but I don't feel like double checking all 30. 21 is the only one we can be sure we see happening in the book, and oddly it's the only one out of chronological order compared to the rest of the death quotes. Edit 2: Fixed some wrong dates. 4-5, I think.

It's notable that the "1000 days" from the first epigraph has actually already passed before we get to death quote #20.  (#12 was another in-story death quote like #19, so I left it out.)
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Peter Ahlstrom on June 08, 2011, 05:14:36 AM
I write the dates as Month#-Week#-Day#, XX-XX-X where the two pairs are from 1 to 10 and the last number is from 1 to 5.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: zas678 on June 08, 2011, 04:10:52 PM
Oh, there's only 5 days per week? That makes a big difference....
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Peter Ahlstrom on June 08, 2011, 08:53:08 PM
Well, there are 10 months, with 10 weeks per month, and the year is 500 days, so that makes 5 days per week. :)
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on June 09, 2011, 05:38:55 AM
I write the dates as Month#-Week#-Day#, XX-XX-X where the two pairs are from 1 to 10 and the last number is from 1 to 5.
Damn it, I'll have to edit the earlier post to show your way of doing it as well.  On a side note, while I mostly understand the abbreviated dates now, where Tanat is used kinda screws me up.  I imagine the system of abbreviating the dates would make even more sense if I studied over the Alethi script? (Which, sadly, I am too lazy to do.)

Date editing done, but I didn't double check them all, so I wouldn't be surprised if some are wrong.  Does anyone else think it's weird that the only epigraph out of chronological order is the only one detailing an event we clearly see happening during the book?
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Sir_Read-a-Lot on June 10, 2011, 01:31:48 AM
Incidentally, I found this quote, from when Taravangian is telling Szeth about the death-messages.

Quote
"We do not know why dome speak when others do not,"  Taravangian said.  "But the dying see something.  It began seven years ago, about the time when King Gavilar was investigating the Shattered Plains for the first time."
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: cromptj on August 17, 2011, 09:40:08 PM
On the subject of dates, Brandon has mention that gravity is weaker on Roshar which suggests that it is smaller than the Earth and rotates more slowly. Of course, it could be bigger and made of lighter elements.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Tortellini on August 19, 2011, 10:55:06 AM
I'm sorry, how does rotational speed impact gravity? Unless you're rotating fast enough to lessen gravity (like flinging people off the planet ;) )... Rotating more slowly makes no sense
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: cromptj on August 19, 2011, 02:22:54 PM
It needs to rotate more slowly because the day would be too short otherwise. The comment was more about the size of Roshar rather than anything to do with its gravity.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on August 20, 2011, 01:32:48 AM
Roshar rotates a bit faster than Earth.
20 hours per day, and their hour is like a minute or two shorter than our hour.
The earth's rotation isn't constant, its speed decreases very slowly over time, due to the moon's influence. http://en.wikipedia.org/wiki/Tidal_acceleration
Quote
This geological record is consistent with these conditions 620 million years ago: the day was 21.9±0.4 hours, and there were 13.1±0.1 synodic months/year and 400±7 solar days/year.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: cromptj on August 20, 2011, 09:35:46 PM
That is assuming that it is the same size as the Earth
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on August 21, 2011, 11:28:02 PM
It doesn't matter if it's the same size, bigger, or smaller than Earth.  If it takes 20 hours to rotate, then it has a 20 hour day.

Let's use Mars and Mercury as examples:
Mars has a 24.6229 hour day and is only has 11% of Earth's mass.  Mercury has a 1407.5 hour day and has about the same mass as Mars.  Mercury has nearly the same density of Earth.  Mar's radius is 0.533 Earths, and Mercury's radius is 0.3829 Earths.

The mass only matters for gravity.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: happyman on August 22, 2011, 02:26:45 PM
It doesn't matter if it's the same size, bigger, or smaller than Earth.  If it takes 20 hours to rotate, then it has a 20 hour day.

Let's use Mars and Mercury as examples:
Mars has a 24.6229 hour day and is only has 11% of Earth's mass.  Mercury has a 1407.5 hour day and has about the same mass as Mars.  Mercury has nearly the same density of Earth.  Mar's radius is 0.533 Earths, and Mercury's radius is 0.3829 Earths.

The mass only matters for gravity.

This is exactly correct, barring some extraordinarily small effects from General Relativity.

Gravity depends only on mass, and the length of the day depends only on how rapidly the planet is turning.  The two can be changed quite independent of each other.  In fact, even black holes have these two parameters independent.
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Tortellini on August 22, 2011, 04:24:35 PM
It doesn't matter if it's the same size, bigger, or smaller than Earth.  If it takes 20 hours to rotate, then it has a 20 hour day.

Let's use Mars and Mercury as examples:
Mars has a 24.6229 hour day and is only has 11% of Earth's mass.  Mercury has a 1407.5 hour day and has about the same mass as Mars.  Mercury has nearly the same density of Earth.  Mar's radius is 0.533 Earths, and Mercury's radius is 0.3829 Earths.

The mass only matters for gravity.

Actually, Mars has twice the mass of Mercury. Yet at the same time, they both have almost the same surface gravity! Density of the planet also plays a role and can have significant impacts apparently. Source of all my apparent smartness: http://en.wikipedia.org/wiki/List_of_gravitationally_rounded_objects_of_the_Solar_System

The things I learn on this forum...  ;)
Title: Re: Timespan for Stormlight Archives? (Spoilers)
Post by: Cheese Ninja on August 22, 2011, 09:10:58 PM
I used wikipedia too, but I just kept jumping between Mars and Mercury's pages, so I'm not too surprised I screwed something up.