mindmap root((FRACT)) fractious 1、 Apt to cause trouble or be unruly.
2、 Stirring up quarrels; irritable.
🌱Shopping with a fractious child is next to impossible. 🌳One of the earliest meanings of fraction was "a break in good feeling"—that is, an argument or conflict. So a person who starts fights could be called fractious. A fractious horse is one that hasn't been properly broken or trained. A fractious political party is one whose members keep fighting among themselves. And a fractious baby is one that's always breaking the home's peace and quiet with angry squalling. fractal An irregular shape that looks much the same at any scale on which it is examined.
🌱He was showing her the fractals in the local ferns, in which each leaf reproduced the shape of the entire fern. 🌳This term was coined in 1975 to describe shapes that seem to exist at both the small-scale and large-scale levels in the same natural object. Fractals can be seen in snowflakes, in which the microscopic crystals that make up a flake look much like the flake itself. They can also be seen in tree bark and in broccoli buds. Coastlines often represent fractals as well, being highly uneven at both a large scale and a very small scale. Fractal geometry has been important in many fields, including astronomy, physical chemistry, and fluid mechanics. And even some artists are benefiting, creating beautiful and interesting abstract designs by means of fractals. infraction The breaking of a law or a violation of another's rights.
🌱The assistant principal dealt with any students who had committed minor infractions of the rules. 🌳An infraction is usually the breaking of a law, rule, or agreement. So a nation charged with an infraction of an international treaty will usually have to pay a penalty. In Federal law, an infraction is even smaller than a misdemeanor, and the only penalty is a fine. Most of us occasionally commit infractions of parking laws and get ticketed; speeding tickets are usually for infractions as well, though they go on a permanent record and can end up costing you money for years to come. The closely related word infringement generally refers to a violation of a right or privilege; use of another's writings without permission, for example, may be an infringement of the copyright. refraction The change of direction of a ray of light or wave of energy as it passes at an angle from one substance into another in which its speed is different.
🌱From where I was standing, the refraction made it look as if her legs underwater were half their actual length. 🌳The root of refraction is seen in the notion that the path of a ray of light or wave of energy is "broken" when it is deflected or turned. The effects of refraction can be seen in a rainbow, which is formed when light rays passing into （and reflecting out of） water droplets are bent at different angles depending on their color, so that the light separates into bands of color. The amount of refraction depends on the angle and the type of matter; refraction can occur even when passing through different kinds of air. A mirage, such as you might see in the desert or over a patch of asphalt in the summer, occurs when light passing through warm air meets the very hot air near the surface; reflecting the sky, it often resembles a lake.