anyone heard of tradition of starting voyages on new moon

[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

[Katana1000S]

I've got a watch I often wear that can be set to show local tides high or low or moon phases, but I can never be bothered to set that function and I don't think I'd ever use it even though I do like Astronomy.

Best fun I ever had with a watch was with a Casio remote control calculator gizmo watch ... I think you can still get them, they were a bit bulky looking even back when I owned one in about 95 though and like something from Thunderbirds one of their puppets would wear ... but what evil fun I could have with it I'm not a football fan, but I'd sometimes go into one of our local pubs when there was a big footie match on ... check the brand of TV and go to the toilet to input the code, then go back and sit down with a pint and change channel just as it got exciting for the football fans there ... I'd have been chased if I was caught at that though, also used to learn the codes for friends and family's TV's and switch them on and off or raise and lower the volume without them seeing me.

This was the watch ...

[raaaid]

Today so close to the equinox when the sun rises exactly in the east and day lasts as long as the night lasts I started back my eyes exercise which brought back the 3d perception



this some see it in 3d some dont

i see it 3d with glasses and flat without them

but could not it be applied to games to make them easy 3d?

[WTE_Galway]

Those are not watches ... they are electronic toys ... these are watches ...

http://www.steampunklab.com/watches/11

[raaaid]

http://www.youtube.com/watch?v=8-lweV8Y4OE

[raaaid]

Something I often thing about it´s why after exactly 2003 flies become stupid

I have been hunting flies all my life till 2003

After a crisis in a moment of wrath i killed a fly hitting it like you would hit a marble with your index finger

I killed 30 flies in a row without missing one in a period of 2 days till I got sick and decided I would kill a fly no more

When i was a kid what i do in this video would be imposible, now flies are dumb as hell

my theory is that i am not on Earth anymore but in a planet with a population so peacefull flies dont run from humans any more, maybe inner earth?

or they just got dumber?

http://www.youtube.com/watch?v=9cJff...ure=plpp_video

or I am a fly mind bender?

[WTE_Galway]

Originally Posted by raaaid

Something I often thing about it´s why after exactly 2003 flies become stupid

I have been hunting flies all my life till 2003

After a crisis in a moment of wrath i killed a fly hitting it like you would hit a marble with your index finger

I killed 30 flies in a row without missing one in a period of 2 days till I got sick and decided I would kill a fly no more

When i was a kid what i do in this video would be imposible, now flies are dumb as hell

my theory is that i am not on Earth anymore but in a planet with a population so peacefull flies dont run from humans any more, maybe inner earth?

or they just got dumber?

or I am a fly mind bender?

... and the bees are disappearing ...