"He asked a few fellow physicists who were also Christians about it and they told him there was nothing to worry about, and that it was people in the arts and humanities who were struggling to reconcile their faith with their studies. Indeed, when Russell eventually started lecturing in the Cambridge physics department, he attended an annual dinner that his church held for members who were also university faculty. There were 23 faculty at the dinner and 22 of them were scientists - with "one very worried-looking historian!"
Far from being incompatible, from Russell's point of view, his faith and his science go hand-in-hand:

"Some people view faith as being one explanation of the world and science as another. It's a turf war...But I don't believe they're competing explanations, I think they're parallel explanations."

Indeed, rather than squeezing God out, Russell sees advances in scientific knowledge as magnifying God's glory: "Understanding more of science doesn't make God smaller. It allows us to see His creative activity in more detail." (See Russell's TEDx talk on Nanotechnology, Creation and God.)"