on April 24, 2022
What is convergence and divergence series?
Space and AstronomyA convergent series is a series whose partial sums tend to a specific number, also called a limit. A divergent series is a series whose partial sums, by contrast, don’t approach a limit. Divergent series typically go to ∞, go to −∞, or don’t approach one specific number. What is convergence of series means? A
on April 24, 2022
What is hysteresis in image edge detection?
Space and AstronomyWhat is hysteresis in edge detection? The thresholder used in the Canny operator uses a method called “hysteresis”. Most thresholders used a single threshold limit, which means if the edge values fluctuate above and below this value the line will appear broken (commonly referred to as “streaking”). What is hysteresis in image processing? In image
on April 24, 2022
What is a circumscribed shape?
Space and AstronomyA circumscribed figure is a shape drawn outside another shape. For a polygon to be inscribed inside a circle, all of its corners, also known as vertices, must touch the circle. What is circumscribed in a circle? In geometry, the circumscribed circle or circumcircle of a polygon is a circle that passes through all the
on April 24, 2022
What happens when a blue supergiant dies?
Space and AstronomyThe Death of Blue Supergiants As we mentioned above, supergiants will eventually die as supernovae. When they do, the final stage of their evolution can be as a neutron star (pulsar) or black hole. Supernova explosions also leave behind beautiful clouds of gas and dust, called supernova remnants. What do blue supergiants turn into? Blue
on April 24, 2022
Why did NASA choose Florida as the location for space exploration?
Space and AstronomyFrom a fuel efficiency and expense perspective, with the amount of energy needed to launch an object, that 0.3 percent savings goes a long way. Cape Canaveral was also chosen because of how close it is to the Atlantic Ocean. Why is NASA located in Florida? Cape Canaveral is located along the East Coast of
on April 24, 2022
How do rays reflect against a curved mirror?
Space and AstronomyOnce these incident rays strike the mirror, reflect them according to the two rules of reflection for concave mirrors. The ray that passes through the focal point on the way to the mirror will reflect and travel parallel to the principal axis. How do curved mirrors reflect light? A concave mirror, or converging mirror, has
on April 24, 2022
Why do sunspots always appear in pairs?
Space and AstronomyThe turbulent motions in the Sun’s interior fragment the loops in the solar magnetic field. Sunspots generally appear in opposite-polarity pairs or in opposite-polarity groups when the magnetic field is fractured. Why do sunspots occur in pairs quizlet? sunspots occur in pairs connected by a loop of magnetic field lines that arc high above Sun’s
on April 24, 2022
Is my child ready for pre algebra?
Space and AstronomyIn what grade does a student typically start pre-algebra? Pre-algebra is typically taught in 6th or 7th grade. Of course, your child might be ready sooner or later. More important than grade level is your child’s ability to handle more complex math concepts. How do you know if your student is ready for algebra? starting
on April 24, 2022
What is positive and negative space in graphic design?
Space and AstronomyPositive and negative space are terms referring to composition in art, graphic design, and photography. Positive space is the subject or areas of interest in artwork, and negative space is the space around the focal point. What is positive space in graphic design? Positive space refers to the subject or areas of interest in an
on April 24, 2022
Why are galaxies moving away from each other?
Space and AstronomyGalaxies rotate around their centers with the sections of the galaxy that are farther out from the galaxy’s center rotating more slowly than the material closer to the center. Galaxies are also moving away from each other due to the expansion of the Universe brought on by the Big Bang. Why all galaxies appear to