Counting the number of galaxies in the universe is tough, because we can’t see all of the galaxies in the universe. At a certain point, distant galaxies disappear from our field of view.
Archives: Blue Sky
What is water scarcity?
Water scarcity is essentially when there’s not enough water in the right place at the right time. Even in places that seem water-rich, it may not be clean enough for its intended purposes.
What’s the difference between types of 3D printer filaments?
3D printing is the process by which we make a piece layer by layer, and the various forms of 3D printing differ in how they make each layer. Extrusion-based printing, or fused deposition modeling, uses filaments. It takes a raw material and extrudes it through a die to create a long strand That’s what a filament is.
How does a curveball curve?
The rule to remember for curveballs: whichever way the front face of the ball is spinning will be the direction in which it curves. The effect is more dramatic with ping pong balls and tennis balls because of their lower mass compared to baseballs.
How are robots and humans similar?
Robots can be similar to people, but they aren’t necessarily so. People create the robots and can choose what aspects of functionality and design are important, but there are some benefits you get out of similarity.