What is the formula to calculate magnification in biology?
605315
Occular strength X Objective strength.
211996
Well, I'll start you off.\n\nAbsorbances are additive, so you subtract the blank from the measurement (.214 - .009 = .205)\n\nSo the absorbance is .205. Now you use beer's law, which is:\n\nA = ebc\n\ne is molar absorptivity (in L/mol cm)\nb is path length (cm)\nc is concentration. \n\nYou use that equation to figure out the concentration of the complex.\n\nFrom there, you can figure out the concentration of iodine based on the amount of starch used. Unfortunately, you've not provided enough information to go beyond here.
851776
E=mc^2\n\nwhere \n E is in joules or kg·m²/s²,\nm is in kilograms, and \nc equals speed of light, in meters/sec (approx 3*10^8)
1103364
each magnitude corresponds to a ratio of 10^(-.2), so you want to multiply the (-.2) by (1.9) and look at 10 to that power. This gives the  fraction of photons that make the trip.\n\nHomework and repeat question.
251993
If f is the focal length, i1 is the refractive index of the lens and i2 is the refractive index of the medium, then the sentence is stating that f = k*(1/(i1 - i2)) where k is some constant (of proportionality).\nI believe the equation being described is the Lens Maker's formula here: http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/lenmak.html#c1 .\nThe power P in that equation is 1/f.
305330
Both are used to magnify
964951
I believe that you are referring to a stereo-microscope. Generally stereo-microscopes have low magnification and are used for the study of macroscopic 3-dimensional objects like insects. Hope this helps.
875983
It's what you peer into. There's a diagram here:\n\nhttp://en.wikipedia.org/wiki/Optical_microscope
374444
100\n\n(10mm=1cm; 10x10=100)
877943
volume of cyllinder = area of circle times height\n\n= Pi x radius x radius  x height\n\nremember its just the same as finding the volume of any prism.\nfind the area of the shape of the end then multiply by its length!!
387044
Electron microscopes are used to magnify details up to 500,000 times their normal size. However, due to diffraction, even the best optical microscope (the kind you are probably used to using) is limited to a resolution of 0.2 micrometers. (One micrometer is 0.000001 meter.)
734519
(1) Take a container and measure the length of the container. Let us say the length of the container is L. \n\n(2) Take a beam of light (preferably a monochromatic source like laser beam) and shine it through the empty container. \n\n(3) Measure the intensity of the light at the end where the beam has gone through the empty container. Let this be Io. \n\n(4) Now fill the container with the liquid whose molar extinction coefficient is unknown. Now measure the light intensity as the beam travels the length L of the container. The measured intensity is I.\n\n(5) Beer-Lamberts law is I=Io exp(-a L) where all the quantities have been experimentally determined except a which is the extinction coefficient. \nRearrange the above formula and we get, a=(-1/L)*log(I/Io) where log is to the base e.
309034
the magnifying of the lens: M = 4 and by definition \nM = -di/do\ndo is the distance from lens to object\ndi is the distance from lens to image\nso -di/do = 4 ---> di = -4do\nthe thin lenses equation:\n1/f = 1/do + 1/di\n1/f = 1/do + 1/(-4do)\n1/f = 1/do - 1/(4do) = 3/(4do)\nf = 4do/3 = (4*2.88 cm)/3\nf = 3.84 cm
752656
The size of an object you can resolve with an optical system has a theoretical limit given by the wavelenght of the light you're using divided by the diameter of the optics multiplied by 1.22. If you plug the numbers in you find for a 1 foot diameter optical system at visible light (~400 nm) at an altitude of 100km, the smallest thing you could see is on the order of a foot, give or take (rough calculation). You could definitely not read a postage stamp or a wrist watch. Maybe a license plate with some bigger optics, but this is ignoring all sorts of atmospheric scintillation which screws things up.
726958
English BMI Formula\nBMI = ( Weight in Pounds / ( Height in inches ) x ( Height in inches ) ) x 703\n\nMetric BMI Formula\nBMI = ( Weight in Kilograms / ( Height in Meters ) x ( Height in Meters ) )
376557
Answer D is correct.\n\nYou can verify with a magnifying lens.\n\nWhen a magnifying lens is used to view objects enlarged, the virtual image is formed at the back of the lens\n\nA and B are partially correct and C   is wrong. D is fully correct.
393312
http://www.chembio.uoguelph.ca/educmat/Chm258/enzplots.htm\n\nsee if that site helps any.  If not.  I can give you a very confused book answer from my Biochemical Calculations text.  It might be hard to explain online though, sorry.  The text I use (as a graduate student--biotechnology) is Biochemical Calculation 2nd Ed. by Irwin H. Segel, it's a great book.