anyone heard of tradition of starting voyages on new moon

[SG1_Lud]

Much better redaction!

Ok you attracted my interest, I will think of it, seems like a good puzzle.

Thanks raaaid.

[raaaid]

From now on I will writte like this.

I dont think it is really the redaction but i am giving proof of my interest by making a bigger effort.

By the way i love forums because it is the only place where i can be myself and tell no lies.

Edit:

Well i have just solved the problem and my heart beat got to 140

I will not spoil it for you but i suggest you take a fixed frame reference, an static Sun.

I was wrong in the universal Moon time thing,you will see if you come up with answer, yet it still proves the ancient sailors could have known about the lunar distance method from 1760 to obtain longitude just by counting suns and moons

[SG1_Lud]

No, believe me, the redaction was a problem for following your logic.

Also bad for your image, because you said you have a degree in english, and your careless writing was making appear you like a liar.

You look like a sensible person raaaid. Maybe you want to accept a suggestion from me.

You have both people that likes your post and people that doesn't like them at all. I think the last ones have nothing against you, simply they are not interested. But since you're one of the most prolific persons I know, your posts are all the way around and some find it like spamming that put down in the forum other threads.

What about keeping your offtopic posts in one thread? That would help you keep focused in one thing at a time, keeping all your thesis and theories together. I bet that thread would be always the top one, so practically, a sticky. And that would end all the complaints about you.

Cheers!

[raaaid]

Yeah¡ thats fine this thread will do:

You go east following Earth rotation and Moon orbit

From a fixed frame, the sun, Earth rotates 28 times, Moon rotates 1 time and you rotate one time in your travel around the world, all with the same sense.

You can take yourself with Earth as a single thing that rotates 29 times, the 28 from earth plus your travel around the world

So then you substract 1 from moons orbit to this 29 figure

So in your travel around the world going east you count 28 moons

How many did they count in Greenwhich?

28 from earth rotation minus one from Moon translation= 27

Seems i had gone wrong

But the bomb in archeoastronomy is that Phileas Fogg in Travel around the world in 80 days counts one MORE sunset than in London and one LESS moonset than in London

What I am figuring now is how the ancient sailors obtained longitude with this knowledge with the simplest method, I would appreciate suggestions

Eulers solution took four hors to obtain longitude with the lunar distance method and though the wikipedia explains wrong the lunar distance method to obtain longitude i could bet its the same I say

[SG1_Lud]

Hey raaaid, I kept my word and had a look at your affirmations. I am sorry to say you that I cannot answer your questions because you are mixing Science Fiction and Science.

I have not the time nor interest to read Verne's fiction again, so I can't say if he counted sunsets, moonsets or sheeps. Anyway I remember that Verne used a known fact tho give a thrill to their audience at the very last chapter.

That known fact is that you can cross timezones travelling, or in your own example, see more sunsets travelling eastwards that if you remain stationary. In fact I can write a fiction story now, where you travel so fast eastwards that you can see in the same timeframe 5 sunrises while I am still shaving myself and yawning.

I hope also that you realize also that moonrises and sunrises are 1) dephased, and 2) that they either happen or not happen (you can't see 0.75 moonrises right?).

So yes, it is possible that at a given time, for two observers in different places the count of moonrises can be different, even if both observers are stationary and close to each other, and even more, if the counted the same number of sunrises

That is no "bomb in archeoastronomy" man, maybe for some, but for international travellers is basic stuff.

If you don't mind I'll wait for your next one, this one I find no interesting.
Sorry!

Maybe you that like so much maths and strange coincidences of numbers, are interested in why we always see the same face of the moon? This question arose a few days with my friends and it was interesting to hear the answers.



P.S.:
16.03.2012
Valencia Moonrise 3:16 Sunrise 7:11
Madrid Moonrise 3:33 Sunrise 7:24

[raaaid]

Well actually I have been partially wrong all this time

if in london they count 79 sunsets and 76 moonsets Phileas Fogg in his travel would have counted one more of each

All this time I have been using a model in which Earth rotates at half the speed the moon takes for a full rotation around earth

In this way the Sun and the Mon have different apparent sense in the sky so my idea would work since Fogg would have counted one more Sun and one less Moon than in Greenwhich in this case

Anyway I still think ancient people could obtain longitude easy what im still figuring out

edit:

The reason we see always the same face of the moon is tidal lock

http://en.wikipedia.org/wiki/Tidal_locking

This is due to the center of gravity and center of mass of the Moon being in different places since gravity varies with the distance SQUARED

[raaaid]

I have been pondering to buy this watch but its a too capitalistic thing:



If you ever wrecage with it you could easily know longitude by the offset between the sun needel and the real sun

Though I coud do the same with my 30 euro casio which tells sunset and sunrise time