Recent content by weeman203

In X-ray diffraction, during the experiment a X-ray beam will create an incident and diffracted beam, but what exactly is the virtual source? I may be mistaken but isn't the source the incident beam, in the attached image, it seems to suggest otherwise?

Thanks for the help! Well viscosity increases with an increase in pressure. Based on the equation for kinematic viscosity, kviscosity=viscosity/density, if viscosity and pressure are both increasing, shouldn't the kinematic viscosity be increasing as well? OK got it, pretty simple. Re for...

Homework Statement I do not need to solve this problem, see below. EXAMPLE 7.1 Air at a pressure of 6kN/m2 and a temperature of 300C flows with a velocity of 10m/s over a flat plate 0.5m long. Estimate the cooling rate per unit width of the plate needed to maintain it at a surface temperature of...

OH yeah, now i remember thanks =D

for example 3 log (base5) 2 - (1/2)log (base5) 9 how would someone come to work this out i know that you are suppose to divide the 2nd part by the 1st but I am not sure where does the coefficients come in would that mean you multpily the coefficients