Coulomb’s law states that the force between two charged particles is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, this can be expressed as:
A varistor is a semiconductor resistor with a symmetric non-linear volt-ampere characteristic. The name is derived from the words “variable resistor” – a resistor that changes. It has the property of sharply decreasing its resistance when the applied voltage exceeds a certain threshold value. With further increase in voltage, the resistance decreases even more. Principle …
Diffraction of light is the bending of light waves around the edges of opaque objects and the penetration of light into the region of geometric shadow. Diffraction of light is a characteristic of all waves and is observed in cases where: The condition for observing diffraction is given by: r ≥ d2 / λ Where: …
Ohm’s Law This law takes into account the key quantitative characteristics of an electric circuit: Ohm’s Law А law stating that electric current is proportional to voltage and inversely proportional to resistance. To describe an electric circuit that does not contain EMF, you can use Ohm’s law for a section of the circuit. This is …
1n4007 diode datasheet 1n4007 diode – for use in general purpose rectification of power supplies, inverters, converters, and freewheeling diodes application.
ЗмістHow Light is GeneratedSources of LightLight PhenomenaDispersion of LightInterference of LightDiffraction of LightGeometric Optics (Propagation of Light) Light is electromagnetic radiation that is perceived by the human eye. The human eye detects electromagnetic waves with wavelengths ranging from 380 to 760 nanometers (nm). The short-wavelength boundary is typically considered to be the range of 380-400 …
ЗмістTypes of Floodlights By lamp type:By application:LED FloodlightMetal Halide FloodlightXenon FloodlightMercury Vapor FloodlightPlasma FloodlightIncandescent FloodlightInfrared FloodlightTheatrical FloodlightsSingle-Lens FloodlightsLow-Voltage FloodlightsParabolic Reflectors (Par Cans)Profile SpotlightsFollowspotsScannersMoving HeadsColor ChangersIndustrial Floodlights Floodlight. Floodlights are designed to illuminate distant objects or provide long-range signaling. Light sources are typically equipped with optical devices that create the required light distribution. Redistribution of the …
A semiconductor is a substance that occupies an intermediate position between conductors, which have high electrical conductivity (metals, electrolytes), and dielectrics, which conduct almost no electric current (porcelain, rubber, and others).
ЗмістElectrification of a bodyConductors, semiconductors, dielectricsAction of Electric CurrentChemical Action of Current.Magnetic effect of current.Electric CurrentElectric potential differenceElectric resistanceOhm’s Law for a Circuit ElementElectrical workElectric current powerExpression of electrical work through powerHeating of conductors by electric current (Joule-Lenz law) Electric current is the ordered movement of charged particles. The words “electric current” and “electricity” are …
How to choose a table lamp and use it effectively to maximize its benefits and convenience in operation: Lamp Placement A desk lamp or table lamp is a device that helps create comfortable lighting for your workspace. Choosing the right placement is crucial. The height of the desk lamp should be raised above the working …