- REAL ID Resources - U.S. Department of Homeland Security extended the REAL ID deadline an additional year to Oct. Current Illinois driver's licenses or ID cards will continue to be accepted at airports, military bases and secure federal facilities until Oct.
- Actually definition, as an actual or existing fact; really.
- We would like to show you a description here but the site won’t allow us.
Actual translate: verdadero, real. Learn more in the Cambridge English-Spanish Dictionary.
Welcome to the official Stanford Prison Experiment website, which features extensive information about a classic psychology experiment that inspired an award-winning movie,New York Times bestseller, and documentary DVD.
WHAT HAPPENS WHEN YOU PUT GOOD PEOPLE IN AN EVIL PLACE? DOES HUMANITY WIN OVER EVIL, OR DOES EVIL TRIUMPH? THESE ARE SOME OF THE QUESTIONS WE POSED IN THIS DRAMATIC SIMULATION OF PRISON LIFE CONDUCTED IN 1971 AT STANFORD UNIVERSITY.
'How we went about testing these questions and what we found may astound you. Our planned two-week investigation into the psychology of prison life had to be ended after only six days because of what the situation was doing to the college students who participated. In only a few days, our guards became sadistic and our prisoners became depressed and showed signs of extreme stress. Please read the story of what happened and what it tells us about the nature of human nature.'
–Professor Philip G. Zimbardo
An Actual Bitcoin
Real Numbers are just numbers like:
In fact:
Nearly any number you can think of is a Real Number
Real Numbers include:
An Actuality
| Whole Numbers (like 0, 1, 2, 3, 4, etc) |
| Rational Numbers (like 3/4, 0.125, 0.333..., 1.1, etc ) |
| Irrational Numbers (like π, √2, etc ) |
Real Numbers can also be positive, negative or zero.
So ... what is NOT a Real Number?
| Imaginary Numbers like √−1 (the square root of minus 1) are not Real Numbers |
| Infinity is not a Real Number |
Mathematicians also play with some special numbers that aren't Real Numbers.
The Real Number Line
The Real Number Line is like a geometric line.
A point is chosen on the line to be the 'origin'. Points to the right are positive, and points to the left are negative.
A distance is chosen to be '1', then whole numbers are marked off: {1,2,3,...}, and also in the negative direction: {...,−3,−2,−1}
Any point on the line is a Real Number:
- The numbers could be whole (like 7)
- or rational (like 20/9)
- or irrational (like π)
But we won't find Infinity, or an Imaginary Number.
Why are they called 'Real' Numbers?
Because they are not Imaginary Numbers.
The Real Numbers had no name before Imaginary Numbers were thought of. They got called 'Real' because they were not Imaginary. That is the actual answer!
Real does not mean they are in the real world
They are not called 'Real' because they show the value of something real.
In mathematics we like our numbers pure, when we write 0.5 we mean exactly half.
An Actual Life
Was Hogwarts An Actual Castle
But in the real world half may not be exact (try cutting an apple exactly in half).