Albert Einstein called gravity a distortion in the shape of space-time. Photo by Keystone/Getty Images Albert Einstein, who won the Nobel Prize in Physics in 1921, contributed an alternate theory of gravity in the early 1900s. It was part of his famous General Theory of Relativity, and ...
Gravity is measured in what is called a Gravimetry and this measures the strength of a gravitational field. The instrument used to measure this is called a gravimeter, and to put it simply it measures the constant acceleration of gravity in a downward direction. Experiments using a gravimeter ha...
—The gravity(引力) in the space station is about 90% of on the Earth.( ) A. it B. this C. that 相关知识点: 试题来源: 解析 C it它,代替前面提到的名词,指同一物;this这、这个,指离自己近的事物;that那、那个,代替前面提到的单数名词或不可数名词,指代同一类物。此空是指地球的重力和空间...
考查代词辨析。it它;this这个;that那个。根据“The gravity (引力) in the space station is about 90% of... on the Earth.”可知此句是比较句,在比较级句子中,为了避免重复,可用that或those来指代比较对象,The gravity为不可数名词,此处应用that。故选C。反馈 收藏 ...
This was the observational motivation that led to Einstein's Theory of General Relativity (GR), which he published in 1915. GR has a completely different take on the nature of gravity. Indeed, it has a completely different take on the nature of space and time. Or at least that is the ...
Other planet's gravity The strength of an object in space gravity is directly proportional to the size of the object. The bigger an object is, the stronger its Gravity is. The Earth has a gravity of 2.6 times the gravity of Mars.1or to look at it another way, Mars has .375 the str...
. Space Force is the military arm of the U.S. space program. The Space Launch System is the main rocket for the U.S. government. Commercial companies, such asSpaceX, Blue Origin and Virgin Atlantic, are beginning to commoditize space travel and exploitation of the low-gravity environment...
考查代词。it它;this这个;that那个;those那些。根据 “The gravity in the space station is about 90% of... on the Earth."可知此句是比较句,在比较级句子中,为了避免重复,可用that或 those来指代比较对象, The gravity为不可数名 ,此处应用that。 故选C。
-What do you learn in "Tiangong Class"?=The gravity in the space station is about 90% of ___ on the Earth. A. it B. this C. that D. those 相关知识点: 试题来源: 解析 句意:—你在“天宫课堂”学了什么? 一空间站的重力大约是地球重力的90%。 考查代词的辨析。分析各选项: A. it 指...
1. There is more stuff (matter) that we don't see with our telescopes. We call this dark matter. 2. Newton's laws and even GR are wrong on the scale of galaxies and everything bigger. This idea is usually called modified gravity (because we need to modify GR) or Modified Newtonian...