The numbers that we use for counting are called the natural numbers. These are the first numbers that were invented, and are so named because they are a natural experience of reality: if you see apples on the ground, whatever their quantity happens to be, it will be a natural numbers. In set notation we […]
A (Very) Brief History of Numbers
While mathematics is the language of science, numbers are the language of mathematics. The earliest use of numbers — or the first intimation for the invention of numbers — takes place around 10,000 years ago in Mesopotamia (the Near East, or Middle East, as it was commonly referred). Some of the world’s first farmers, herdsman, […]
Using the WPP Shortcode and WordPress Popular Posts Block
The WPP shortcode (and WordPress Popular Posts Block) can be inserted into posts, pages, or any block of the WordPress CMS using only a few short characters of code. With this shortcode you can specify a range of parameters to achieve a wide variety of ‘Most Popular…’ or ‘Best Of…’ type lists to display on […]
Heart Rate Variability (HRV)
Heart Rate Variability (HRV) is a measurement of the variation in time between each successive heart beat. A person who is more relaxed may experience greater variability in their heart rate as it changes its pace organically, resulting in greater variation in time between each beat. This is a high heart rate variability, which is […]
The Tangent Problem
The word tangent itself is derived from the Latin word tangens, which means “touching.” In mathematics and in geometry, a tangent line is a line drawn that touches a curve at an angle perfectly parallel to that particular section of the curve. (The curve can be anything to a drawn circle on a page, or […]
The Difference Between Mass and Weight
The difference between mass and weight is that they are quantities which ultimately mean different things, are measured differently, relate to different physical quantities and relationships. They are related to one another, sure. However, they are not the same. Our weight is the amount of force that the Earth exerts on an object, whereas the […]
Kirchhoff’s Voltage Law (KVL)
Kirchhoff’s Voltage Law is used in the study of series circuits, where it is observed that the voltage applied to a closed circuit is equal to the sum of the voltage drops within that circuit. Another way of expressing this is, the algebraic sum of the voltage rises (applied voltage) and the voltage drops must […]
Kirchhoff’s Current Law (KCL)
Kirchhoff’s Current Law (KCL) is another statement about the law of conservation of energy within a circuit, affirming the conservation of charge flow. It states that the sum of currents entering a junction is equal to the sum of currents leaving the junction. Mathematically we can sum up this idea as We read […]
Working Memory
Working Memory is the aspect of our cognitive system that enables human beings to consider, manipulate, and otherwise bring to mind intellectual information. That is, our ability to bring to mind information stored within the mind, whether that is information stored within the long-term memory (previously learned information) or within the short-term memory (information we […]
Black Hole Accretion Disk
A Black Hole Accretion Disk is a massive disk composed of superheated gas, dust, and plasma that rotates around a black hole in an orbital pathway just beyond the event horizon — the spherical region around a black hole singularity inside of which the gravitational force exerted by the black hole is so great that […]