# MichaelBartmess's Collections

## 000 EiEs Collection 33

vCalc's Equation Editor and Constant Editor allow you to select from the library of vCalc equations, constants and data sets and to drag-and-drop these tokens into your equation's code or your constant's code.

## 1.0 What is the Universe? Collection 4

This vCalc page discusses the question: What is the Universe? I discuss how I view something that is so vast, so massive, so complex and yet so simple in its many facets. I discuss the nature of its extents and what we know of it today.

## 1.1 Let's Define a Universe Collection 6

What is a universe, that is what is a universe in its general definition? First, a stock universe is comprised of things like galaxies that undergo formation and changes across vast spans of time, so an observer (similar to us) basically cannot directly determine the formation, the evolution, the changes that occur in a universe.

## 1.1.1 The Edge of the Universe Collection 4

What is the edge of the Universe? Where is the surface? Where does the universe end and what is beyond that end. What defines the boundary of the Universe? And does that question even make sense?

## 1.1.2 Expansion of the Universe Collection 4

The expansion of the Universe as we know it today is one of the most fascination aspects of the physics behind phenomena of our Universe. The metric expansion of the Universe is defined as an intrinsic expansion phenomena where the scale of space itself changes.

## 2.0 What is Space & Time? Collection 4

What is spacetime? Spacetime is a way of looking at the fabric of the universe as an interconnected concept of space -- which we typically think of in in terms of three dimensional (3D) Euclidean geometries -- and time -- which we think of as an inelastic dimension that flows continuously at a fixed pace.

## 3.0 And Then There's Gravity Collection 4

What is gravity? Why is it so easy for humans living on this massive body to ignore gravity? After all the Earth is spinning and we don't feel it. We don;t have to think about gravity to walk or run.

## 3.1 Orbits, a Relative View Collection 27

What is an orbit? First, we must remember that an orbit is an imaginary construct, an invisible path in space that describes the motion of one massive object relative to another. An orbit may not be exactly what you think it is.

## 4.0 Important Theories Collection 4

This page describes the most current theories of the universe, of gravity, of the nature of everything that I understand. I apologize if I haven;t captured the absolute latest theories here. Science, especially astrophysics, never, ever stands still.

## 5.0 Today's Most Amazing Discoveries Collection 4

This previous set of discussions on the Universe are meant lead to this section, where we use the definitions we have composed to illustrate what is truly amazing about some of our latest discoveries about our Universe.

## 5.1 Extraterrestrial Planets (Exoplanets) Collection Collection 5

Nothing captures the imagination more than the thought that there might be other life in the universe -- other life than ours, alien life, life on an exoplanet. Science evolves through an ever-improving ability to measure.

## 5.1.1 What is an Exoplanet? Collection 4

An exoplanet or extrasolar planet is a planet that orbits a star other than our own planet's Sun. The first scientific detection of an exoplanet was in 1988. However, the first confirmed detection came in 1992; since then, and as of 22 February 2017, there have been 3,583 exoplanets in 2,688 planetary systems and 603 multiple planetary systems confirmed.

## 5.1.2 The First Found Collection Collection 4

51 Pegasi b (unofficially dubbed Bellerophon, later named Dimidium): Dimidium is an extrasolar planet in the constellation of Pegasus. It was the first exoplanet to be discovered. It orbits the sun, 51 Pegasi.

## Astrodynamics Collection 1

Astrodynamics combines Newtonian physics of celestial mechanics, orbital mechanics, and ballistics into a science which can be applied to satellites, rockets, and spacecraft. required for a body to complete one orbit.

## Astronomy Collection 2

In recent years eyes have turned to the night sky expecting to find some new and possibly unwanted visitor paying a visit to our solar system. Asteroids and comets are often in the news and many times they are discovered by amateur astronomers.

## Cool Stuff Collection 36

vCalc lets you look at the math behind your everyday life. And we get smarter by doing so, seeing the world as it is represented by the math and science, seeing the reality of how it all works. I like peering into that reality.

## Elementary Statistics - A Sampling of Applied Probabilities Collection 42

This page highlights just a few of the equations on vCalc that demonstrate the application of Probability. We'll look at probability applied to happiness, to card games like Poker, to random choices, to the search for life beyond our solar system.

## Elementary Statistics - A Simple View of Mathematics Collection 23

NOTE: many vCalc equations are embedded throughout vCalc descriptive pages like this page. Even though they may not stand out in the text, if you hover over the name of an equation it will likely be linked to an actual, pop-up executable equation.

## Elementary Statistics - Frequency Distributions Collection 24

Viewing data as a frequency distribution can give you a quick understanding of the central tendencies of the data. Two vCalc equations let you view your own data as a frequency distribution.

## Elementary Statistics - Measures of Central Tendency Collection 23

We next examine the idea of measuring central tendencies. A measure of central tendency is simply a way to express a single representative number for a set of numbers. It is a characteristic value for a group of values.

## Elementary Statistics - Population Versus Sample Collection 21

When we work with data sets we often treat them differently if the data set represents a sample of populations versus the whole population itself. When we use of the term “population” in common dialogue, we think of groups of people.

## Elementary Statistics - Probability Collection 42

Probability and random events go hand in hand. See the selection of vCalc equation to the right that generate random choices. Probability measures the likelihood that an event will occur.

## Elementary Statistics - Quantification Collection 23

NOTE: many vCalc equations are embedded throughout vCalc descriptive pages like this page. Even though they may not stand out in the text, if you hover over the name of an equation it will likely be linked to an actual, pop-up executable equation.

## Elementary Statistics - Variability Collection 22

We next examine the idea of measuring the spread of values in a data set, the amount of dispersion or scattering of the data values. We are talking about the characteristic variability of a data set.

## Elementary Statistics Collection 29

Elementary Statistics tools and techniques are important to many branches of science. Below and on subsequent pages we will connect you to a wide range of executable examples of statistics equations and you will be able to play with them and see how they work.

## Football Collection 38

Football is THE sport in the United States unarguably. Coming from Ohio where the heart of football lives, thrives and bangs out alumni fanatics, you can't but take up the call of the pigskin.

## Pig Physics Collection 6

Have you ever wondered what a pig could tell you? Well, despite the often mentioned epithet that pigs are very intelligent animals, I have personally never experienced a pig conveying any form of intelligible information.

## Santa Trivia Collection 3

Christmas would not be Christmas without the jolly fat man. While I cherish Santa's contribution to the holiday, I have always been stymied to imagine how he does it, how he delivers all those packages.

## The Standard Unit of Mass Collection 7

The Standard Unit of Mass has been defined as the mass of metal cylinder since 1799 and today the mass is being re-defined in terms of several fundamental constants of the universe. >> Back to the Cool Stuff Collection << In 1799, an all-platinum kilogram prototype was fabricated.

## The Universe Collection 4

Our most fundamental knowledge of the Universe, our Universe we live in, is best described by math and physics. As we'll see in other parts of this series of discussions, all other sciences also describe our Universe, since a universe comprises all that exists within it.

## The Universe-Index Collection 4

This page is a table of contents with links to chapters in a vCalc Collection's discussion of interesting features and phenomena of our Universe. It includes topics of extreme interest in today's scientific community.

## Transformer Design Collection 44

The equations, constants, calculators and collections shown below are all related to the design of a transformer. See the many related electrical equations in vCalc's Electrical Library.