By Hazel Muir
Science in Seconds explains 2 hundred of crucial suggestions in quite a few branches of technological know-how. The booklet makes use of simply understood language and transparent illustrations for every idea, making it perfect for people with very little adventure within the sciences. Readers can achieve a initial figuring out and should be inspired to hunt additional information. beneficiant cross-referencing and a word list of phrases upload readability and context.
The booklet explains key strategies within the following matters:
- Physics
- Chemistry
- Biology
- Ecology
- Biotechnology
- Anatomy and physiology
- Medicine
- Earth science
- Energy generation
- Astronomy
- Space flight
- Information expertise
Science in Seconds is a superb source for college kids lately brought to those techniques and as a quick-look reference for readers.
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Additional resources for Science in Seconds: 200 Key Concepts Explained in an Instant
Sample text
Refraction is the process that happens when light travels from one transparent medium, such as empty space or air, into another one, such as water. Light travels slower in water than in a vacuum, and this change of speed is responsible for the bending of light, or refraction. 33. Light bends toward the normal when passing into a denser medium and away from the normal when entering a less dense one. Glass lenses in eyeglasses and optical instruments like telescopes are specially shaped to refract light rays onto the required paths for correcting poor vision or focusing starlight.
Another unusual property is that its spin is quantized—it only rotates at certain allowed speeds. When the container of a superfluid rotates below the liquid’s sound speed, the fluid doesn’t move. Once the container’s speed reaches the sound speed, the superfluid suddenly spins at this speed. Perfect superfluids also have infinite thermal conductivity. A hot spot in superfluid helium will ripple through it like a sound wave with a speed of around 45 mph (20 m/s). The name superfluid was coined to echo the term superconductor (see page 82), which describes materials that conduct electric currents without any resistance.
Why do they have their particular masses? But the grand unified theories developed so far are unpleasantly complicated and invoke exotic, untested physics, some requiring space to have hidden extra dimensions. ” One candidate is string theory, which assumes that particles are like tiny vibrating strings. But string theory has yet to make testable predictions to prove that it accurately describes nature’s design. Atomic structure Atoms consist of a tiny dense nucleus containing positively charged protons and uncharged neutrons, surrounded by clouds of electrons.