Specific gravity (SG) is a lot simpler than you and your alien friends expected: It's just the ratio of the density of a given object to the density of waterat a specific temperature.Specific gravity has no units.Its utility lies in the fact that the density of some objects changes with...
Specific gravity (SG) is a lot simpler than you and your alien friends expected: It's just the ratio of the density of a given object to the density of waterat a specific temperature.Specific gravity has no units.Its utility lies in the fact that the density of some objects changes with...
Many manufacturers employ a process called constant density to tint the lenses. It is the oldest method of creating sunglasses and involves a glass or polycarbonate mixture with a uniform color throughout the material. The tint is built right into the lenses when they are created. Tinting can ...
Weightis the result of gravity acting on mass: w = mg. The value of g on Earth's surface is 9.8 m/s3with units ofacceleration. To find the weight of something, simply multiply its mass by the value of the local gravitational field, and you get a result in newtons (N). For example...
Aerogel insulation can be a great electrical conductor, yet when made from different materials, it can also be an effective thermal insulator [source: Steiner, Zero-Gravity]. In this article, we'll explore what makes aerogels unique, from their discovery in California in the late 1920s, to ...
In real life, you can usually look up the density of commons liquids in reference books or online. While the calculation is simple, it's important to cite answer using the correct number ofsignificant digits. Also, pay attention to the units of your answer and make sure they agree with th...
feeders that utilize gravity to refill their food, the stored feed will likely get wet, moldy and contaminated as the moisture wicks up via capillary action. You risk losing your food, but more importantly you risk causing your ducklings to get a chronic infection from eating contaminated food....
A model always requires the knowledge of input parameters, sometimes lots of them. While some of these parameters are well known and easy to find (the density of water or the ideal gas constant, for example), there are often parameters that, for various reasons, are unknown. In the example...
Based on our current best understanding,the solar system formed from a primordial nebula– a cloud of dust that coalesced under the force of its gravity creating a flattened disk that bulged in the middle. After that bulge became dense enough to fuse hydrogen together, it ignited into our sun...
to grow quietly.coolly to maturity. Once the Earth embryo was the size of Mercury, any incoming rock, be it the size of an asteroid or a small planet, would be accelerated to such a terrific velocity by Earth's gravity that on impact it would shatter and melt or even vaporize. Besides...