Can someone explain some of these Physical applications to Biology

[nabilesmail]

---

Members don't see this ad.

Hey guys, would you mind applying and explaining some common integrations of physics and Biology that are likely to be on the mcat.

3 big ones I need help with are, Optics & Eye, Muscle & Lever system, and Ears

I understand optics but don't really understand the "what kind of lens would be used to correct the vision" etc...

Just a simple explanation would be great discussing some of these. Thanks!!!

 

[MedPR]

Hey guys, would you mind applying and explaining some common integrations of physics and Biology that are likely to be on the mcat.

3 big ones I need help with are, Optics & Eye, Muscle & Lever system, and Ears

I understand optics but don't really understand the "what kind of lens would be used to correct the vision" etc...

Just a simple explanation would be great discussing some of these. Thanks!!!

Converging lenses fix farsightedness, diverging fix nearsightedness.

The problem with nearsighted-ness is typically bending light too much, or focusing light in front of the retina. To do this, you must use a diverging lens which makes the light have to bend more so it ends up focusing further back and on the retina where it should. The opposite is true for farsightedness (not bending light enough, so you use a converging lens to help the eye).

 

[nabilesmail]

Converging lenses fix farsightedness, diverging fix nearsightedness.

The problem with nearsighted-ness is typically bending light too much, or focusing light in front of the retina. To do this, you must use a diverging lens which makes the light have to bend more so it ends up focusing further back and on the retina where it should. The opposite is true for farsightedness (not bending light enough, so you use a converging lens to help the eye).

Thanks! But I'm still a bit confused, anyone have a link to a page or so explaining this :/

So if the image appears in front of the retina this is known as farsightedness and diverging lens scatter light so that they can be refocused by the eye lens?

 

[nabilesmail]

bump

 

[folktale]

Thanks! But I'm still a bit confused, anyone have a link to a page or so explaining this :/

So if the image appears in front of the retina this is known as farsightedness and diverging lens scatter light so that they can be refocused by the eye lens?

image in front of the retina is nearsightedness, therefore a diverging/concave lens is used to make the real image reach the retina.

 

[MedPR]

Thanks! But I'm still a bit confused, anyone have a link to a page or so explaining this :/

So if the image appears in front of the retina this is known as farsightedness and diverging lens scatter light so that they can be refocused by the eye lens?

Image in front of the retina is nearsightedness. Think about what happens to light rays when they pass through a diverging lens. The diverging lens is used to compensate for the over-refracting done by the nearsighted individual's eye.