on April 25, 2022
What is a simple event in stats?
Space and AstronomyA simple event is one that can only happen in one way – in other words, it has a single outcome. If we consider our previous example of tossing a coin: we get one outcome that is a head or a tail. What is an example of a simple event? In probability terms, a simple
on April 25, 2022
Which type of shadow causes for eclipses to happen?
Space and AstronomyThe umbra is the dark center portion of a shadow. The Moon’s umbra causes total solar eclipses, and the Earth’s umbra is involved in total and partial lunar eclipses. What are the 2 types of shadows in an eclipse? During a solar eclipse, the Moon actually casts two shadows toward Earth. One shadow is called
on April 25, 2022
What does Exis mean?
Space and AstronomyEXIS Acronym Definition EXIS Expert Information Systems (see CHEMDATA, CGM 39/87) EXIS Extensible XML Information Set What is Axis in simple words? axis noun [C] (IMAGINARY LINE) a real or imaginary straight line going through the centre of a object that is spinning, or a line that divides a symmetrical shape into two equal halves:
on April 25, 2022
What is day and night cycle?
Space and AstronomyThe Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours. Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term ‘one day’ is determined by the time the Earth takes to rotate once on its axis and
on April 25, 2022
Can you see snow from space?
Space and AstronomySouthern Snow (Image credit: NASA Earth Observatory.) The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite caught this unusual view of snow across the southern United States on Jan. Is there a planet with snow? Due to the planet’s extreme surface temperatures, this rain would evaporate before landing. Yet even more bizarrely, there is
on April 25, 2022
What is Boolean logic used for?
Space and AstronomyWhat is Boolean logic? Programs use simple comparisons to help make decisions. Boolean logic is a form of algebra where all values are either True or False. These values of true and false are used to test the conditions that selection and iteration are based around. What can Boolean be used for? Boolean Operators are
on April 25, 2022
What kind of mirror is used in vehicles?
Space and AstronomyConvex mirrorConvex mirror: different uses One of the most common uses for the convex mirror is the passenger-side mirror on your car. These convex mirrors are used for cars because they give an upright image and provide a wider field of view as they are curved outwards. What type of mirror is used in vehicles?
on April 25, 2022
Why is the circumference of 2 Pi r?
Space and AstronomyIt sounds like you are aware of this, but just to clarify: the formulae 2πr and πd for the circumference of the circle are equivalent because the diameter is twice the radius. The former statement is often more useful simply because the radius of a circle is a property that we often refer to. Why
on April 25, 2022
Is every group of order 4 cyclic?
Space and AstronomyWe will now show that any group of order 4 is either cyclic (hence isomorphic to Z/4Z) or isomorphic to the Klein-four. Is group of order 4 always cyclic? The order of an element of a group must divide the order of the group. So a group of order 4 can only have elements of
on April 25, 2022
Where are most comets in our solar system located?
Space and AstronomyThere are likely billions of comets orbiting our Sun in the Kuiper Belt and even more distant Oort Cloud. Where are most comets found in the solar system? The Oort Cloud It is thought that most comets originate in a vast cloud of ice and dust that surrounds the solar system. The Oort Cloud, as