أكاديميا - كولنز - معاجم الجيب العلمية - الفيزياء - انكليزي - فرنسي - عربي الحرف ١_ i

Academia - Collins - Pocket Scientific Dictionaries - Physics - English - French - Arabic Letter 1_ I


ice point
Point m to the glass

Ice point. See fixed points.


illumination (1)
illumination f

light. A measurement of the intensity (brightness) of light arriving per unit surface area. This measurement depends on the brightness, distance, and angle of the source. The unit of illumination in the International System of Units (SI) is the lux (lx).

image
image f

picture. If you look at the light coming from an object after it passes through a lens or a mirror, it does not appear to be coming from the object, but rather it appears as if it is coming from another place - the image of the object.

The image is the place where the light coming from the object appears to be coming from it after passing through a lens, mirror, or other optical instrument. The light actually passes through a “real image” and does not pass through a “virtual image” like the one shown in the figure above. Therefore, the real image can be captured on a screen, while it is impossible to capture the fake image.


induced charge
charge for induite

Induced charge. See charging.


induced emf
fem induite

Induced electromagnetic force.
See electromagnetic induction.


induced magnetism
Magnétisme m inuit

Induced magnetism. The way in which an iron sample, for example, becomes a magnet when it is in a magnetic field. The field causes the sample domains to align with each other.

An unmagnetized nail does not have any net magnetism. When near a magnet, as the drawing shows, the nail becomes magnetized. If the resulting attraction is greater than the weight of the nail, it will move toward the magnet.


inductor
inductance f

Instigator. One of the three types of negative circuit elements. In other words, it is the type that does not need to be power fed. The other two types are: resistor and capacitor. The device consists, in most cases, of a wire coil around an iron core. The exciter is also called a coil and choke.

When one applies a continuous voltage between the two ends of the coil, a back emf appears across it. This tends to oppose the growth of the current in it. The reason is due to the change in the magnetic field caused by the change in current. See -elec tromagnetic induction.

The inductance of a device is the opposing electromagnetic force that flows through it when the current in it changes at the rate of an ampere per second. The inductive unit is the Henry H.

inertia
input f

Inertia. Palaces. The inertia of a body relates to how hard it is
Get him to change his movement, whether that is to make him move, slow him down, or change the direction of his movement. The body's mass is an accurate measure of its inertia. See also Newton's laws force and momentum.


infrared
infrarouge

infrared. A region in the spectrum of electromagnetic waves. Its wavelength ranges approximately between 6-10 and 3-10 m.

The frequency ranges between 1012 and 1015 Hz.
All materials constantly emit infrared radiation, which is the thermal radiation detected by draft thermometers, nerve cells in human skin, thermal batteries, and photographic films.

infrasound
infrason m

That's a voice beneath me. The sound has a frequency too low to affect the ear, i.e. less than about 20 Hz. However, the body as a whole may feel the vibrations, or a part of it may feel them, such as the rib cage.