Spheres

He nods and shakes the spheres.

There is geometry in the humming of the strings, there is music in the spacing of the spheres.

The inner planets, the closest to the Sun, are solid spheres of rock and include Mercury, Venus, Earth, and Mars.

The outer planets are large gaseous spheres with rings and include Jupiter, Saturn, Uranus, and Neptune.

Elliptical galaxies contain older stars and very little gas and dust. They vary in their shape from round to flattened, elongated spheres.

Copernicus wrote all of his ideas in a book called On the Revolutions of the Heavenly Spheres.

I read the article "Dyson Spheres around White Dwarfs."

Different cultural spheres and ideological currents define the notion of democracy in different ways.

The music of his verses is generated in the subtle spheres of the heart.

A pressure vessel is a container designed to hold gases or liquids at a pressure that’s either much higher or lower than the surrounding atmosphere. Think of it like a strong tank built to safely manage these pressure differences without bursting or leaking. They are commonly used in industries like oil and gas, chemical processing, and power generation. For example, they might store compressed air, gases like hydrogen, or even liquids used in industrial processes. Pressure vessels can be shaped like cylinders, spheres, or cones, and they’re made from strong materials like steel to handle the stress caused by high pressure. What makes pressure vessels special is the way they’re built to ensure safety and durability. Since working with high pressure can be dangerous, there are strict rules and tests to make sure these vessels are reliable. Engineers carefully design them, often following standards like the ASME code, and test them to make sure they can handle real-world conditions. They’re not just for storage; they also play a role in things like chemical reactions or heat transfer. In short, pressure vessels are critical tools that help industries operate efficiently and safely.