Breaking in a new vehicle is really about the engine. The break-in — or mechanical run-in — period is designed to begin to wear the engine evenly and smoothly with low, consistent pressure, normal operating temperature and smoothly flowing oil. The goal is to get the engine's piston rings, which expand, contract and flex, to seat properly on the cylinder walls. If there are imperfections in the pistons or the cylinder walls from the manufacturing process, working the engine too hard and too soon can wear down those imperfections too quickly. That leads to "hot spots" within the engine's cylinders, which can cause problems in the years to come. … [Read more...] about Do You Have to ‘Break In’ a New Car?
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"The data that I've seen seems to indicate that it doesn't really increase giving; it just spreads it out a little instead of having all holiday and end-of-year giving happen in the last week of December," he says. "My belief is that Giving Tuesday doesn't address the core challenge in nonprofit fundraising — getting in front of a donor at the moment they care about and are motivated about the nonprofit's cause. Any 'day of giving' is arbitrary, and there's really no reason why they should motivate donors. But compare that to the urgency you feel after a natural disaster ... or after reading about an abused animal — that is what motivates donors, not dates on a calendar." … [Read more...] about After Cyber Monday, People Open Their Wallets for Giving Tuesday
It's a system that's been around since ancient times. "The idea of celestial coordinates does assume that the sky is a sphere that surrounds the Earth. This is the idea that traces back to the early belief that the Earth was the center of everything," Christopher Palma, a teaching professor and associate head for undergraduate programs in the Department of Astronomy and Physics at the Pennsylvania State University, says in an email. "Even though we now know that to not be true, it is still true that the sky appears to be a sphere surrounding us, so we can use spherical coordinates to identify any location on the sky." … [Read more...] about How Do We Find Things in the Blackness of Space?