# Visual respresentations of topics in Astronomy

by tractiveForce
Tags: astronomy, respresentations, topics, visual
 P: 4 Hello everyone. It is exciting to discover your forum here. I am hoping someone might be able to point me in the right direction for finding any symbols, charts, diagrams, written formulas, et cetera (ANYTHING) that represents or communicates or otherwise serves to explain any of the following concepts: The habitable zone - both general and specifically for our solar system Earth's rotation and/or a body not being tidally locked Earth:Moon size ratio (especially how this is unique compared to other planet:moon ratios) How the Moon slowed Earth's rotation during formation How the heating and cooling of Earth because of its rotation creates weather Moon's tractive force This diagram that represents the relationship between the size of the Earth and Moon is an example of the type of thing I am hoping to find. Sorry if this is too vague or not clear. Any help is appreciated. Thanks!
 PF Gold P: 1,909 In order for me to attempt some contribution may I first please understand exactly how the posted diagram represents the relationship between the size of the Earth and Moon? Thank you for your attention. Bobbywhy
P: 44
 Quote by Bobbywhy In order for me to attempt some contribution may I first please understand exactly how the posted diagram represents the relationship between the size of the Earth and Moon? Thank you for your attention. Bobbywhy
The two circles in solid black lines seem to represent Earth and Moon. Their radii ratio is about 0.27, which seems consistent with the diagram. Everything else in the picture looks like a geometrical build-up from the two circles.

 P: 4 Visual respresentations of topics in Astronomy A - C Earth Diameter B - C Earth Radius C - E Moon Diameter C - D Moon Radius F - G - H – 345 Triangle
PF Gold
P: 6,478
 Quote by tractiveForce A - C Earth Diameter B - C Earth Radius C - E Moon Diameter C - D Moon Radius F - G - H – 345 Triangle
Yes, but the implication of the diagram is that there is some significance to

1) the isoceles triangle that has the earth's diameter as its base
2) the right triangle

I see no significance to either one. The fact that you can draw them is not meaningful unless there is some significance to their dimensions and I don't see any. If the moon were twice as big as it is, you could draw exactly the same two triangles, they would simply have different angles.

If in fact there is no significance to the triangles, then putting them into the figure is misleading.
 P: 4 Here is some more info. Does it apply? For the purposes of my project it is enough to know that the dimensions all fit together as they do. Does anyone know of any charts, diagrams, formulas, etc for any of the other topics I posted? If we take the 3,4,5 triangle with the area of*6*we can calculate the measurements of the earth and moon. Take 3+4+5=12 and 3X4X5=60 and multiply those two 12X60=72 which adds up to nine. Now, multiply 72 times a factor of 10 you get 720. Take this 720 and multiply the ratio between earth and moon*11 to 3*to get the measurements of the earth and moon but simply put the 3,4,5 triangle holds the measurements to the earth and moon. The perimeter of the square around the Earth is 4 x 7920 = 31,680 miles. The circumference of the outer, dotted line circle is 2 x pi x radius = 2 x 22/7 x (3960 + 1080) = 44/7 x 5040 = 31,680 miles as well. Thus this ideal description of the Earth and Moon "squares the circle" by producing an equal perimeter and circumference.