Newton’s Second Law of Motion project
Gravity is an important cause of acceleration Newton's Second Law of Motion tells us that force equals mass times acceleration. You can try this out for yourself. Here's a website with [...]
Gravity is an important cause of acceleration Newton's Second Law of Motion tells us that force equals mass times acceleration. You can try this out for yourself. Here's a website with [...]
Pedaling will make her accelerate. So will going downhill. Acceleration is a way to measure how fast something is speeding up. Suppose you are riding your bike. You start out [...]
Photons - Sunshine breaking through the clouds. When did the first photons appear? A photon is a tiny little particle of light, far too small to see individually. All light is [...]
Henry IV of France Henry IV of France In 1589 AD, Catherine de Medici died in France, and her last son, Henry III, was killed a few months later. Henry III had [...]
Church of St. Sernin, Toulouse, France In 1080 AD, the church of St. Sernin in Toulouse was a busy place. Charlemagne had given the church some saints' relics, and many people stopped to pray [...]
Elevation of the nave inside Reims cathedral One difference between Chartres cathedral and Reims cathedral was that at Reims they didn't build a deep gallery over the aisle. Instead, they just put [...]
Notre Dame of Paris nave Building the apse of Notre Dame After they had pretty much finished the nave of Notre Dame of Paris, the builders worked on the crossing. [...]
Medieval cathedrals: Façade of Amiens cathedral in France What is a cathedral? A cathedral is any Christian church where a bishop has his headquarters. No matter how big a church is, if there's [...]
Elevation of Amiens cathedral (begun 1220 AD) Where Chartres cathedral had a full gallery above the side aisles, Amiens has only a thin false gallery like Reims, with windows behind it that let in [...]
What are quarks? Tiny particles found all over the universe. What are quarks? Quarks and electrons are the tiniest particles. There are three quarks in every proton and three in [...]