أكاديميا - كولنز - معاجم الجيب العلمية - الفيزياء - انكليزي - فرنسي - عربي الحرف ٢_ s

Academia - Collins - Pocket Scientific Dictionaries - Physics - English - French - Arabic Letter 2_ S


shadow. shadow
ombre f

Shade. Because radiation travels in a straight line
Within a given medium, an opaque object casts a shadow, as radiation cannot pass beyond it. In general, see diffraction.

Shadow area
Point source
Sharp shadow

If the source is larger than a point, the shadow will not be sharp. No rays reach the umbra (black) shadow. Some radiation reaches the penumbra (gray shades). See also eclipse.


shear
cisallement m

He told. A force that causes a change in shape. A pack of playing cards can be changed from a rectangular shape to a trapezoidal shape by shearing force.

shock, electric
choose my electronics

electric shock. A group of symptoms that follow the passage of current through the body. These symptoms may include strange sensations such as tingling, burning, muscle spasms, skin damage, fainting, and death.

A person struck by an electric shock may appear to be lifeless. However, first aid with cardiac massage and mouth-to-nose resuscitation may lead to the restoration of the injured person's pulse and breathing. But first the power must be cut off.


short circuit
court circuit m

Short circuit. A low-resistance path between two points in a circuit.

Pregnancy
I1 = E/(R =r)

castle
I2 = Er > I1

The large flow of charge in the induced short attracts a strong current from the source. If the shortness is a defect
The fuse breaks the circuit.


signal
signal m

Signal. An amount of electricity that changes over time to allow the transfer of information. The signal can include a change in voltage, a change in current, or waves that change in frequency or amplitude. We can look at electronics as the study of how circuits and their elements affect input signals.


siphon
siphon m

siphon. A siphon is a device used to transfer liquid from one place to another at a lower level. The weight of the fluid in the left arm is greater than in the right arm. In order for the siphon to work, it must:

A) The tube must be filled with water.
b) The outlet pipe must be lower than the water surface level.


slide projector
Projector m de positives

Positive image viewer. This device projects a real, mirrored image of a small object, the transparent chip, onto a distant screen. The mirror (a), below, and the condenser (c) focus the light emitted from the source (b) onto the slice (d), which is the object whose light is refracted by the projection lens (e), so the image appears on the screen.

Tape and movie projectors work almost the same way. There is an interconnection between overhead projectors and blackout projectors. In the latter case, the light is reflected by an opaque (opaque) body instead of passing through a transparent body.


solar energy
Solar energy

Solar energy . Energy comes from the sun. Some calculators contain solar cells. Converting sunlight, or even artificial light, into electrical energy. Silicon solar cells provide an electromotive force (EMF) of about 0.5 volts.


solenoid
solenoid m

And an elongated Shiite. A file whose radius is much less than its length. The magnetic field around it is similar to the field around a bar magnet. However, the coil is an electromagnet, whether it contains a “soft” iron core or not.