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why does vision using the fovea have high visual acuity, but low sensitivity to light compared with vision using other parts of the retina.

the connections within the retina explain this. there is a different density and distribution of different types of cells in the retina - the fovea, in the centre of the eye, has a high density of cone cells...
JW
Answered by Juliette W. • Biology tutor
9904 Views

Integrate ln(x)/(x^3)

Using integration by parts split it into v'=(1/x^3) and u=ln(x). v=-1/2x^2 and u'=1/x. Integral ln(x)/(x^3) = u*v - Integral u'*v = -ln(x)*1/2x^2 - 1/4x^2 + c
AA
Answered by Archie A. • Maths tutor
6517 Views

Find the integral of (x+4)/x(2-x) .dx

In order to integrate the expression we must first rewrite it in terms of Partial Fractions i.e. A/x and B/(2-x), so that when multiplied together we have a fraction with same denominator as the expression w...
AT
Answered by Aaron T. • Maths tutor
4716 Views

What exactly is a democratic deficit?

A democratic deficit is a great big gaping hole where public engagement with political processes should be. This means any area where citizens like you and me should have a say but don't. Since the UK is a d...
DC
13408 Views

Can you please give an example of Grice's maxim of quantity?

Grice's maxim of quantity requires that you make your contribution to the conversation as informative as is needed for the current exchange. For example, let's say that A asks B "What did you have for b...
AH
56088 Views