Australian open indoor event

[tistrapukcipeht]

Originally Posted by adil1972

i dont understand how its summer in australia

What's heavier: 1Lb of wool or 1Lb of gold??

[edmondsm]

Awesome.....

[BHud]

Who's buried in Grant's tomb?

[Sumo]

Originally Posted by mib

If you think it is so simple, can you explain _why_ it is summer in the southern hemisphere in January?

Here's a very simplified answer, and something most 5th graders have learned.

We live on a planet.
This planet is called Earth.
The Earth rotates around the sun. (this has been proven, btw)
The Earth also spins on an axis.
This axis is not vertical, but tilted.
This tilt means that at any time during the year, either the northern or the southern hemisphere will be the recipient of more of the sun's energy.
When the energy is most direct on a certain hemisphere, that part of the earth will experience summer.
In Australia, this falls in line with a month on our calendar that is called January.

I hope this helps.
For more information follow this link....... https://www.google.com/

[Djokodal Fan]

Originally Posted by adil1972

i dont understand how its summer in australia

Trolling of highest order!

[sureshs]

Is Australia an island or a continent? What is the difference between the two?

[President]

Originally Posted by sureshs

Is Australia an island or a continent? What is the difference between the two?

Australia is normally considered too big to be an island. It also sits on its own tectonic plate, unlike Greenland for example (another huge island) which sits on North America's. Therefore it is usually defined as a continent.

[mib]

Originally Posted by Sumo

Here's a very simplified answer, and something most 5th graders have learned.

We live on a planet.
This planet is called Earth.
The Earth rotates around the sun. (this has been proven, btw)
The Earth also spins on an axis.
This axis is not vertical, but tilted.
This tilt means that at any time during the year, either the northern or the southern hemisphere will be the recipient of more of the sun's energy.
When the energy is most direct on a certain hemisphere, that part of the earth will experience summer.
In Australia, this falls in line with a month on our calendar that is called January.

I hope this helps.
For more information follow this link....... https://www.google.com/

This is a fine explanation but misses one key point -- that the tilt of the rotation axis to the plane of the Earth orbit does not change as Earth goes around the sun. In any case, while not too complicated, I doubt most people would be able to produce this explanation right away.

[mib]

Originally Posted by tistrapukcipeht

What's heavier: 1Lb of wool or 1Lb of gold??

What would you rather drop on your foot?

[Sumo]

Originally Posted by mib

This is a fine explanation but misses one key point -- that the tilt of the rotation axis to the plane of the Earth orbit does not change as Earth goes around the sun. In any case, while not too complicated, I doubt most people would be able to produce this explanation right away.

So you were just trolling.

And if I'm reading your post correctly we're saying the exact same thing. The north or south pole is always pointing at the same point in space, causing the change in where on earth is receiving the direct sunlight during its orbit.

[Big_Dangerous]

Originally Posted by adil1972

i dont understand how its summer in australia

F***ing hemispheres, how do they work?

[PeteD]

What I don't get about Australia, is how they walk upside down

[vive le beau jeu !]

Originally Posted by adil1972

i dont understand how its summer in australia

The radius of the sun's orbit around the Earth's axis symmetry varies throughout the year, being smallest when summer is in the northern annulus and largest when it is summer in the southern annulus.

from: http://theflatearthsociety.org/wiki/...?title=Seasons

[augustobt]

Originally Posted by adil1972

i dont understand how its summer in australia

oh god, why?

[sureshs]

Originally Posted by President

Australia is normally considered too big to be an island. It also sits on its own tectonic plate, unlike Greenland for example (another huge island) which sits on North America's. Therefore it is usually defined as a continent.

See, I never knew the tectonic plate angle to this question. That is why I love this board.

[ramos77]

[aimr75]

fedace....

[Ico]

[mib]

Originally Posted by Sumo

So you were just trolling.

And if I'm reading your post correctly we're saying the exact same thing. The north or south pole is always pointing at the same point in space, causing the change in where on earth is receiving the direct sunlight during its orbit.

I was just pointing out that while nearly everyone knows that the seasons are switched between the hemispheres, the actual physical explanation of that is not that trivial.

For instance, why does the axis of the rotation not change with respect to the orbital plane? I think this is a result of some gyroscopic effect, but I am not sure.

Take the Moon, for example. It is phase-locked with the Earth -- we never see "the dark side" (it is not really always dark, of course). Why does not the same thing happen with the Earth with respect to the sun?

[Monsieur_DeLarge]

Originally Posted by mib

Take the Moon, for example. It is phase-locked with the Earth -- we never see "the dark side" (it is not really always dark, of course). Why does not the same thing happen with the Earth with respect to the sun?

Tidal locking is a consequence of distance, the bodies' masses, and time. Although the moon is much smaller than the sun, its closer proximity means it exerts a greater tidal influence overall (about 2.5x greater, as far as I remember), so the moon has been locked to the earth first.


Regards,
MDL