where [I.sub.1] [member of] (0.8, 0.9), [I.sub.2] [member of] (0.7, 0.8), and [I.sub.3] [member of] (0.1, 0.2), since 3[square root of 59] = 3.8929 ..., e = 2.7182 ..., [pi] = 3.1415
The first five digits of Pi are 3.1415
. How cool is that?
The date for Pi Day Cymru was chosen because the first digits of Pi are 3.1415
which equate to March 14, 2015, in the American calendar Retired North Wales professor Gareth Ffowc Roberts came up with the idea for Pi Day Cymru, which has been backed by the Welsh Government.
This year is particularly special because the next two digits of pi are 15 - and 3.1415
equates to March 14 2015.
Alternatively, it has been suggested that the HPF diameter per area can also be calculated by using the following formulas (40): (1) Measure the diameter of a low-power field by using a ruler; (2) Calculate a constant by using the following formula: Eyepiece Magnification x Objective Magnification x Microscopic Field Diameter = A Constant; (3) Calculate the diameter of an HPF for other objectives by using the following formula: Unknown Field Diameter = Constant/(Eyepiece Magnification x Objective Magnification); and (4) Calculate the area of the HPF as follows: Half of the field diameter is the radius of the field (r), and 3.1415
x [r.sup.2] = Area of Microscopic Field.