Humans have been weighing objects for centuries. The earliest scales that have been found have dated back to 2000 BC. What humans were weighing centuries ago is not much different than what we weigh today: crops, animals, and golds and other metals are still commonly weighed. But, whether you have a scale or not, knowing… Read More
Can You Drink Rain Water?
There’s no denying that in many parts of the world, drought is a problem. It’s therefore essential to do whatever is possible to protect water supplies and conserve the drinking water we have. And, drought or not, some people may just be curious about how to be more eco-friendly on their own, or may want… Read More
What is the Average Chair Size?
Choosing the right chair for any room may be a challenge. Many people have never given thought to the standard chair height for various rooms and purposes. A chair’s height will impact how comfortable it is for both family and guests. In most cases, anybody sitting in a chair should be able to place their… Read More
How Tall Were the Vikings?
Vikings—also known as Norsemen—were sailors who lived hundreds of years ago, but their legacy lives on to this day. One of their lasting impacts was the image we have when we think about these men and women. Something that comes to mind is their height and general appearance. For many people, what comes to mind… Read More
What is the Average NBA Player Height?
Imagine you’re watching an NBA game on TV. You know that the professional basketball players are tall given their profession, but with a whole team standing next to each other, it can be difficult to tell just how tall each person is. Look at the same players in a photo with, say, their family or… Read More
How Long Do Water Filters Last?
It’s common for both homeowners and renters to use a water filter to make their tap water safe to drink. Filters may be central to a home, attached to a faucet, or used as part of a water filtration pitcher. Drinking water is preferable to drinking sugary drinks, particularly for people who are trying to… Read More
How Tall is a Newborn Giraffe Compared to a Human?
Giraffes are the tallest mammals on earth. But, just how tall are they? And, what about newborn giraffes? Understanding the height of these animals can help you understand how humans compare, too. Here’s why: How Tall is a Newborn Giraffe? Compared to their mothers they might seem small, but a newborn giraffe is about six… Read More
What is a p-value in statistics
This article examines the most common statistic reported in scientific papers and used in applied statistical analyses - the p-value. The article goes through the definition illustrated with examples, discusses its utility, interpretation, and common misinterpretations of observed statistical significance and significance levels. It is structured as follows: p-value definition and meaningWhat does 'p' in… Read More
Posted in Science
Tagged hypothesis, nhst, null hypothesis, p-value, probability, significance level, statistical significance, statistics, type I error
December 9, 2020
Comments closed
BMI for Women: Does a BMI Calculator for Women Make Sense?
There are multiple BMI calculators out there, including our own online Body Mass Index calculator. Some of them make a distinction between the sexes and produce different results for men and women. Others don't make such a distinction, including those put forth by the most respected health organizations such as the U.S. CDC, NIH, and… Read More
Posted in Health
Tagged BMI, body mass index, calculate body mass, weight loss
March 10, 2020
Comments closed
How to Punch Harder – Increase Your Punching Power Using Physics
If you are into fighting sports such as boxing, kickboxing, MMA, sanda or even a traditional martial art, you probably want to increase the punching power of your fists. When discussing how to punch harder one can hear contradictory advice for example "speed equals power" and "power is not speed". It seems much of the… Read More
Posted in Science, Sports
Tagged boxing, impact force, kinetic energy, martial arts, mma, physics, punch, punching power
March 8, 2020
Comments closed