# Equivalence Principle

Fractions with Starburst. 4.NF.1 Number & Operations- Fractions. Extend understandings of fraction equivalence and ordering. Explain why a fraction a/b is equivalent to a fraction by using visual fraction models with, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size.. Use this principle to recognize and generate equivalent fractions.

*279*

*13*

1915, Albert Einstein published his papers on General Relativity and the Equivalence Principle which were received with a great deal of skepticism. According to General Relativity, the gravitational attraction between masses results not from some hidden force but from the warping of space and time by those masses. He also said there was no such thing as "ether". And, he predicted from his theory that light from distant stars would be bent by the sun.

*6*

*1*

A teoria das cordas postula que toda a matéria e energia do universo é composta de cordas unidimensionais. Essas sequências são um quintilhão de vezes menor do que o átomo de hidrogênio já infinitesimal e, portanto, muito pequenas para se detectar indiretamente. Da mesma forma, encontrar sinais dessas cordas em um acelerador de partículas exigiria milhões de vezes mais energia do que a que foi necessária para identificar o famoso bóson de Higgs.

*4*

Triple star system can reveal secrets of gravity: A newly discovered triple star system that consists of a pulsar and two white dwarf stars who's orbits around the pulsar are smaller than the orbit of Earth around the Sun will help scientists study precise measurements of gravity and could resolve difficulties with Einstein's theories.

*6*

*1*