#scienceeducation

Water, being a liquid, takes the shape of its container. The arrangement of particles and their motion make liquids behave differently from solids and gases. 💧

In a solid, the particles are tightly packed and fixed in place. They can only vibrate slightly and cannot move freely. Because of this rigid structure, solids retain their shape no matter where they are placed. 🧊

In contrast, the particles in a liquid like water are close together but not fixed in one position. They are constantly moving and can slide over each other. This freedom of movement allows water to flow easily. When water is poured into a container, its molecules rotate and spread out until they are fixed according to the shape of the container. 🥛

Another important factor is the force of gravity. Gravity pulls water down, causing it to collect at the bottom of the container. Since the molecules can move freely, they rearrange themselves to fit the available space. This is why water forms different shapes in different containers, such as bottles, glasses, bowls, or pools. 🌍

At the same time, water molecules attract each other through weak intermolecular forces. This attraction keeps the molecules close together so that water can change shape but still maintain its volume. It is also related to surface tension, which creates the smooth surface that appears on still water. 🌊

Gas behave differently because their particles are far apart and move very freely, so gases spread out to fill the entire container. Water does not completely fill a container like gases because its molecules stay close together.

Astronomers say they’ve finally seen, for the first time, evidence of a powerful wind blowing from the supermassive black hole at the centre of our Galaxy. The Milky Way’s central supermassive black hole is known as Sagittarius A*, and the team behind the study say they’ve uncovered the most detailed view yet of how the black hole interacts with and transforms its surrounding…

A homopolar motor is a type of electric motor that uses a magnetic field to create motion. It is also known as a disc motor, a Faraday disk, or a disc dynamo.

The homopolar motor is made up of three main parts:

A battery: This provides the electrical current that flows through the wire.

A magnet: This creates the magnetic field that interacts with the current in the wire.

A conductive wire: This is the wire that carries the electrical current and interacts with the magnetic field.

The wire is typically shaped into a disc, and it is placed between the poles of the magnet. When the battery is connected to the wire, a current flows through the wire. This creates a magnetic field around the wire. The magnetic field of the wire interacts with the magnetic field of the magnet, and this causes the wire to rotate.

The speed of the homopolar motor depends on the strength of the magnetic field, the amount of current flowing through the wire, and the size and shape of the wire.

Homopolar motors are simple to construct and can be used to generate small amounts of electricity. They are often used in educational demonstrations and experiments.

Here is a diagram of a homopolar motor:

The battery is connected to the wire, which is shaped into a disc. The disc is placed between the poles of the magnet. When the battery is connected, a current flows through the wire, creating a magnetic field around the wire. The magnetic field of the wire interacts with the magnetic field of the magnet, and this causes the wire to rotate.

With over 150,000 copies sold since its first publication, this is one of the most popular astronomy books of all time. This unique guidebook to the night sky shows you how to obse

What are the stories we tell? Share? Consume? What role or purpose do they fulfill in our lives? What effect are they having on our lives?

While watching the 1st video, attacks on children’s media for having political messages were mentioned. It made me reflect on this amazing TED Talk, 2nd video.

I remember watching some of these episodes in my childhood, and I never felt like I was being preached at. I was slowly learning that unfairness was common, and fellow kids can be selfish and mean toward each other. As an only child, I spent a lot of time with adults, and was realizing many people don’t grow up when they’re adults.

These episodes felt like the writers were giving us kids inside tips on how to deal with difficult situations - ones that adults in our lives may never give us. I always felt so grateful for these episodes.

Some argue that such media takes away a child’s innocence - ignoring that there are ways (at appropriate ages) to explore concepts without showing children uncensored horrors. There will come a time when a child begins to learn the truth, and a slow build up of empowering information is better than a sudden shock to it all. Kids will become adults - adults who are responsible for themselves and their treatment of others. Being uninformed will not automatically make them righteous people.

As a matter of fact, having such limited story material / information can backfire! (2nd video)