Backwards Mirror Image

Why do words appear backwards in a mirror?

A very interesting question. I think you also noticed that the words and letters in a mirror's reflection while backwards are not upside down. Looks like very strange behavior, so why does this happen?

Very profound questions you're asking and the answer illustrates a very advanced concept variously called mirror-symmetry, inversion symmetry or P-symmetry (the P stands for the word parity). Understanding symmetries turns out to be one of the key or fundamental ingredients needed to understand the Universe we live in.

Rampin’ Hotwheels

Since I was in the hospital this week's post will be shortened. My grandson recently devised a science experiment for school. It consisted of studing how hotwheels behaved while rolling down a ramp under different weights. This was my impression of his experiment.

Is outer space empty?

This turns out to be a very profound question. And the answer has two parts. You might have to ask your mom or dad to help you with some of the videos.

Let's start with trying to figure out what "empty" means. Imagine you have a box of some kind. For example like this

What is gravity?

Good question! Both interesting and intriguing! Some of history's greatest scientists have struggled to answer this question. The history alone is facinating. Well, enough preliminaries, let's get right to the answer. If you don't understand any of the words I am using ask your mom or dad to explain them. In science words are important and we have to use the right words so we can convey our meaning properly to others.