why do objects look smaller the farther they get.?
343774
I think this is because we see everything inside a virtual cone (actually 2 cones one for each eye, but assuming one for simplicity) ... \nLight enters our eyes (tip of the cone) from each direction which fall into our field of view or cone of view, just like it happens in a camera... when an object moves away it moves towards the open or wider side of the cone so it appears smaller as compared to its previous position (think with respect to the cone)... \nThis would not be the case if we had a plane vision (like when all the rays which entered our eyes were parallel to each other, but for that to happen the eyes would have to be very wide and flat, like in a flat bed scanner)...\nHope this answers your question...
311095
The strength of the lense is different on the top than on the bottom. That way a person can see at a distance and also see better up close like when reading.
423150
the effect is called Gradient!\n\nUse the help menu to figure it out, i dont have the menus memorized to talk you through it
477266
It's easier to draw than to explain. But the size of the object you are looking at depends on the angle of the light from the top and the bottom of the object as it enters your eye.. The bigger the angle, the bigger it appears to you. \nSo.. a 20 metre high tree looks quite big 100 metres away, but a kilometer away it looks much smaller. The tree is the same height but the angle of the light from the top and the bottom is a lot smaller.
288946
a double convex lens will magnify, i can't remember which ones reduce size, but i'm guessing some sort of concave lens, and lenses REFRACT light, while mirrors REFLECT light.
48821
It is an optical illusion.  The moon appears to be larger because you are comparing it to smaller things.  They have taken very careful measurements and determined that, in fact, the moon is the same size no matter where it is in the sky.\n\nThere was a theory for a while that the moon appears larger because objects in general appear larger when you look horizontally at them.  I have to admit I have a soft spot for that theory no matter how hare-brained it may seem.  After all, your heart jumps when you look down (and maybe up?) a long cliff, but you don't get the same effect when you imagine the same situation in a horizontal context.  I've heard this theory was mostly debunked, so I can't seriously suggest it anymore.
406370
More light is needed as the magnification is increased since the size of the hole of the objective lens decreases. Try it!
694338
Yes, it does, this is due to refraction, which is the bending of light. Images in water always appears nearer, and thus seems larger! n_n
47103
It is presumed that we perceive the sun/moon larger near the horizon because its in close proximity to buildings and other frames of reference, and our eyes compare the size of the moon to the buildings and other horizon features. \n\nUp in the sky, there is no frame of reference, and without it, the moon appears smaller.
878219
your question is not clear. describe positions of the objects.
725263
I think you are talking about diameter and that too about graduated cylinder.\n\nThen a small measuring cylinder is more accurate than large measuring cylinder.\n\nGenerally, as a cylinder is narrowed, more precise measurements can be obtained in readings, as the graduation markings are farther apart for the same volume.
8264
It's because of the minor imperfections in the placement of the mirrors. Also, because the effect can't be seen without seeing it at an angle, it causes a curve based on your viewpoint.
173877
Your measurement around there will decrease.
335545
Because when it's closer to the horizon, we have other objects (trees, houses, or even mountains) to compare it to, and the moon (or sun) looks very large, taking up 2% of the horizon.\n\nWhen it's farther up in the sky, there's nothing around it, so it tend to disappear in all that empty space.  Even though it still takes up 2% of any given arc, there are wide open arcs to the right, to the left, to the top and to the bottom of the moon that are totally devoid of objects.  Relative to all that open sky, it doesn't look so big.
469881
i think it has something to do with the density...couldnt tell you exactly tho
1001818
see a minor distance creat such a difrnc, 10/10
123669
dimes take up less space