أكاديميا - كولنز - معاجم الجيب العلمية - الفيزياء - انكليزي - فرنسي - عربي الحرف ٥_ c

Academia - Collins - Pocket Scientific Dictionaries - Physics - English - French - Arabic Letter 5_ C


circuit breaker
Disjoncteur m

Break the circuit. Safety circuit breaker automatically cuts off the current when overloaded. The fuse is often used today instead of the fuse because it cuts the current more accurately. current - circuit - breaker (RCCB) A residual current circuit breaker should be used with devices such as an electric lawn mower when the dangerous leakage to the ground is not enough to burn a normal type of fuse.


circular wavefront
On the circuit

Circular wave chest. See wavefront.


classical physics
Physique f classique

Classical physics. Physics a hundred years ago or more.
It is, therefore, the sum of knowledge before relativity and quantum theory, and before the discovery of cathode rays, X-rays, and radio activity. “Modern physics” includes all of these fields, as well as electronics and photo-electricity.


cloud chamber
room of Wilson

Cloud room. Condensation chamber. Radiation detector: The air in the room is saturated with steam, and (displaced) radiation passes through it, leaving behind a tail of ions (ions). These ions act as centers on which the steam condenses, and a line of small droplets appears. The drawing shows a diffusion cloud chamber, and the vapor level is always correct in the shaded area of ​​the drawing.


collector
collecteur

Complex. Terminal of a transistor.


cohesion
cohesion f

hang in there . The kinetic model of matter states that all particles of matter tend to attract each other. Cohesion is the attraction between particles of the same type. The attraction between particles of different materials is called adhesion. See also surface tension.

colour. colour
couleur f

color . It is the name we give to the sensation of different wavelengths of visible light. It is believed that there are special cells in the eye that carry out this process, see color vision.

Visible light wavelengths range between 400 and 760 nanometers. This field contains several hundred hues (distinctive colors), and these merge with each other on the gradation from dark red to dark blue. People often divide all the colors of the field into six or seven ranges, as in the two tables below. The white does not appear here, as it contains all the Negev equally.

The refraction of a parallel beam of white light in a glass prism can produce a spectrum of colors as shown.
There is a second way to obtain the spectrum is diffraction. The process in both cases is called dispersion.

Note that red light is less bent than blue light in “refraction”.

There are few surfaces that reflect all the light. Most surfaces absorb certain wavelengths more than others.

As a result, only certain colors are reflected and the surface appears “coloured”. “Blue” paint absorbs all colors except blue and green, which it reflects only. The “yellow” paint reflects the colors orange, yellow and green. Both colors appear black in red light.

Most paints (dyes) are a mixture of paints. If blue paint is mixed with yellow paint, it appears green, as it only reflects green waves.

Subtractive color mixing differs from the collective effects of mixing colored lights. For triangles of colors, see color vision.