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Why should the lens of a normal eye be fatter to look objects and thinner to look at distant objects?
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Do all objects fall towards the center of the earth?
All objects on earth are pulled towards the center of the earth by gravity. The objects are pulled to the core(center of earth), but are not pulled through because of the normal force.
What is a star like object is very bright and distant?
If this is a homework question the answer you are probably looking for is Quasar [See related question] However, the actual question is full of inconsistencies. Brightness is defined as being observed from Earth and distance is relative to your frame of reference - Apparent magnitude [See related question - Apparent magnitude] Therefore, a bright object could be the Sun, and in normal relative terms it is distant, to some very distant. A quasar on the other hand is not very bright from Earth but it is very very distant. For the question to fit the answer, the question should be "What star like object is very luminous and very far away". or "What star like object has a high absolute magnitude and is very distant [See related question - Absolute magnitude]
Why is a normal eye not able to see clearly objects placed closer than 25cms?
Light from objects that we see has to be focused by the eye to give a sharp image on the retina. Light from near objects is very divergent (spreading out), and the lens of the eye has to become very thick to focus it. As there is a limit to how thick we can make the lens, there is a near point beyond which we cannot focus.
Why doesn't the Moon travel in straight line and continue in space?
The normal tendency of objects - when no force acts on them - is to move in a straight line, at a constant speed and direction (that is, a constant velocity). However, when there is a force, an object's velocity may be changed. That's what happens to the Moon, as well as to other objects in some orbit. In this case, the force is provided by gravitational attraction from Earth.
Where is the nearest vacuum in space to earth?
The answer may depend on what definition of vacuum an investigator uses. There really isn't any place in the universe which could be considered a complete (perfect) vacuum. Even in the largest void between galaxies, there are still a few hydrogen atoms.The atmosphere of the Earth doesn't just stop either. We are all familiar with the air around us but the Earth's atmosphere simply gets thinner and thinner as height increases. There isn't a place where the atmosphere suddenly stops and turns into a vacuum.Atmospheric scientists consider 5 layers of the atmosphere:1) troposphere contacts the earth's surface and extends to about 7km upwards at the poles and 17km at the equator2) stratosphere up to about 50 km3) mesosphere varies quite a bit4) thermosphere up to about 400 km5) exosphere which simply extends out into space getting thinner and thinner. At this height molecular collisions rarely occur so temperature loses its normal meaning.
Why should the lens of a normal eye be fatter to look at near objects and thinner to look at distant objects?
The muscles around the lens of your eye push and pull it thicker and thinner to focus your eye on an object depending on the distance from your eye to the object. The focal length of a fat lens is shorter than the focal length of a thin lens (the light rays are bent more sharply) When you focus binoculars, you are adjusting their focal length
How do you know when your hamster is having a baby?
if it is fatter than normal.
Is the normal resting eye generally set for distant vision?
The normal resting eye can see distant objects, but they do appear blurrier and less colourful. Take mountains for an example. I can see them a province away while I'm on crowfoot, but they look a very light gray. Hope I helped :3
Is emmetropia farsightedness?
Emmetropia is when light is focused exactly on the retina and vision is perfect. Farsightedness is called hyperopia. This condition occurs when the eyeball is smaller than normal and light rays from near objects do not focus properly on the retina at the back of the eye. A person with hyperopia can see distant objects more clearly than closer objects.
How can you tell when a lizard is about to lay her eggs?
she would normally be fatter than normal, ONLY if your feeding her normally, Brand0n
Why do short girls tend to have larger breasts compared to normal height girls?
cos they tend to be fatter :D
Is it normal for someone to be distant after someone dies?
yep at some stage.
What happens when a persons ventricles have thinner walls then normal?
it breaks more easily
What is normal inr value?
Normal INR levels for someone not on blood thinner therapy (e.g. Coumadin) would be about 1.0.
Is it normal for a 4 yr old to be constantly worried about the distant future?
nope.
How many germs do objects hold?
There is no answer to this as the size of the germ and objects are different but normal millions
Why does my boyfriend become distant?
He probably becomes distant because he is scared of his own feelings. As soon as you pull back or act like you don't care, he'll be back to normal.
