What is electricity? Physics
What is electricity? A bolt of lightning in the sky What is electricity made of? Everything in the universe is made of atoms. Those atoms are made of electricity. Atoms are [...]
Electromagnets – electricity and magnets
There are electromagnets inside stereo speakers When did people invent electromagnets? In the early 1800s AD, about 200 years ago, scientists in Denmark and Britain figured out another way to [...]
Magnet project – electricity
Brio trains have magnets at the ends for your magnet project Brio trains and magnetism To see how magnets push and pull each other, get out your wooden Brio trains. One end [...]
Electromagnet project – Electricity – Science
Build your own electromagnet with a nail, some copper wire, and a battery What will I need? You can build your own electromagnet. Get about five meters of copper magnet wire (you can [...]
What is a battery? Electricity
A Leyden Jar - an early kind of electric battery In the early 1800s AD, about 200 years ago, scientists in Denmark and Britain figured out another way to make magnets. [...]
Stoics – Greek and Roman philosophy
Cicero, a Roman philosopher The Stoics were a group of philosophers who first began teaching their ideas in the Hellenistic period. Stoicism was founded by a man named Zeno, who lived from 335-263 [...]
Skeptics – Greek philosophy
This is supposed to be a bust of Pyrrhon, the founder of Skeptic philosophy We don't know as much as we might like to about the activities of Plato's Academy after [...]
Ancient philosophy: ethics, fate, and science
Weighing the souls of the dead Philosophy means the love of wisdom. But what does that mean? It's hard to separate philosophy from religion. And it's also hard to draw a [...]
Epicurean philosophy – ancient Greece
A statue of the philosopher Epicurus, carved later, long after he died - Epicurean philosophy When did Epicurus live? Another philosophical group which developed in the Hellenistic period, around the same time as [...]
Cynic philosophy – ancient Greece
Diogenes the Cynic with his lamp (Roman sculpture, once in the Villa Albani) - the Cynics Who started Cynic philosophy? One of Socrates' students, Antisthenes, started his own group of philosophers [...]
