○○○ heliocentric ⪢⪢
In a heliocentric model the Sun, not the Earth, is in the center and all other
objects including the Earth orbit the Sun. In this model the Earth is moving in two ways. It revolves arround the Sun and it also rotates on an axis.
￫ spin
http://qindex.info/i.php?x=14014
○○○ plunge ⪢⪢
These incidents, many caught on video over the past 2 decades, show U.S. military encounters with shadowy
objects that seem capable of traveling upwards at 11,000 miles per hour, changing direction and plunging into water without slowing down. #bookmark
http://qindex.info/i.php?x=15559
○○○ hypersonic ⪢⪢
U.S. officials now believe the
objects are mostly likely not secret U.S. technology but they worry they could be advanced systems by another country, potentially Russia or China, both known to test hypersonic systems.
http://qindex.info/i.php?x=15561
○○○ host ⪢⪢
Have you ever looked up into the sky and wondered what was there? Higher than the birds, past the clouds and farther than the moon, a whole host of fascinating
objects spin in outer space.
￫ wonder
#quote
http://qindex.info/i.php?x=20129
• 1643 - 1727 Isaac Newton
Galileo had already discovered some years prior that the distance traveled by a falling
object is represented by a function of time.
Newton wondered how one could calculate the velocity of the
object at any particular instance during the fall.
http://qindex.info/i.php?x=5035
• 03 Rates of Change
Galileo had already discovered some years prior that the distance traveled by a falling
object is represented by a function of time. Newton wondered how one could calculate the velocity of the
object at any particular instance during the fall.
http://qindex.info/i.php?x=5034
◌◌◌ Line
From here, we can construct a one- dimensional
object by stringing an infinite number of points along a particular dimension. This
object is called a line.
http://qindex.info/i.php?x=5177
◌◌◌ Space
By stringing an infinite number of lines along a dimension perpendicular to the line, a two-dimensional
object called a plane can be obtained. And then if we string an infinite number of planes in either direction, we get three dimensional space.
http://qindex.info/i.php?x=5178
◌◌◌ Plane
By stringing an infinite number of lines along a dimension perpendicular to the line, a two-dimensional
object called a plane can be obtained. And then if we string an infinite number of planes in either direction, we get three dimensional space.
http://qindex.info/i.php?x=5031
