"If a power-driven introduction in a magnetic field, the electric current drain direction in such a way, so that the motion of the introduction of electricity resulting in the induction of yesteryear is hampered by it.
Sabtu, 12 April 2014
Kirchhoff Law (1875)
Kirchhoff Law (1875)
If a range of electric current to coincide at some point, then the algebraic sum of the currents-currents strength is 0 (zero) in pertepatan.
In a circular electric current which covered the following equation applies: "algebraic Sum of nonlinear otherwise-power flow and nonlinear otherwise prisoners in every part (of the release) is equal to the algebraic sum of electric motion styles".
Big electric current which flows toward the point of branching the same amount of electric current coming out of a branching point
Jumat, 11 April 2014
Laws (Swing), Galilei (1596)
-Tempo swing does not depend from the amount of amplitude (a distance of swing), the origin of the amplitude is not too large.
-Tempo swing does not depend from weighing bandulan swing.
-Tempo swing is comparable with a barrel length of root bandulan swing.
-Tempo swing is comparable with roots back from acceleration caused by gravity.
What is Dalton's Law of Partial Pressures?
Dalton's law (1802)
"The pressure of a mixture of several kinds of gas (that do not react chemically with one another) is equal to the sum of the pressures of each gas, he explained the pressure from each of such gas, if he was there alone each mixture in space".
What Is The Formula For Gay-Lussac's Law?
Gay Lussac's law (1802)
"If a quantity of something ideal gas (i.e. quantity according to weight) has a constant pressure, it is also a result for the volume and the temperature is a constant number" "gas is growing linearly with pressure constant and temperature increases"
coulomb's law definition
Coulomb's law (1785)
-Style, done by two magnetic pole which is one on the other, is proportional to the strength of the mekanitisme-straight poles and comparable back with quadratic distance between the two poles.
-Style, done by two objects (which are each electrically charged) the one on the other, is comparable to the barrel with a strong electrical charge of the objects and comparable feedback with quadratic distance between the two objects.
Kamis, 10 April 2014
Boyle's law (1662) and Boyle's law-Gay Lussac (1802)
Boyle's law (1662
"If a quantity of something ideal gas (i.e. quantity according to weight) has a constant temperature, so also the result times the volume and pressure is constant number".
Boyle's law-Gay Lussac (1802)
"For a given quantity of an ideal gas (i.e. quantity according to weight) product of pressure and volume is divided by the absolute temperature is a constant"
Rabu, 09 April 2014
Bernoulli's law (1738) and Boyle's law (1662)
"For liquid substances, which cannot be suppressed and that flow is stationary, the amount of energy of motion, energy and constant pressure is power".
Boyle's law (1662)
"If a quantity of something ideal gas (i.e. quantity according to weight) has a constant temperature, so also the result times the volume and pressure is constant number".
Senin, 07 April 2014
TOPIC: Avogadro's law (1811)
"If two kinds of gas (or more) of the same volume, then the gases just as much as the number of molecules, respectively, from the same temperature and pressure, and also
Minggu, 06 April 2014
Archimedes ' law (+ 250 BCE)
"If an object is dipped into the liquid, then something that thing will get the same amount of pressure with the infiltration of liquid weighing by the object".
Jumat, 04 April 2014
Learn Physics-vibration and free vibration with damping
Vibration analysis
Basic vibration analysis can be understood by studying the model simple mass-spring-damper. Complex structures such as the car body can be modelled as "sum" model of mass-spring-damper. This Model is an example of a simple harmonic oscillator
Vibration
Vibration analysis
Free vibration without silencer
In the simplest model of the attenuation is considered negligible, and there is no outside force affecting mass (free vibration).
In these circumstances the prevailing style in the spring the long stretch comparable to Fs x according to Hooke's law, or when it is formulated mathematically:
Fs =-k x
with the k is the spring constant.
According to Newton's second law force posed is proportional to the acceleration of the mass:
Σ F = ma = m {x} = m {d ^ 2 x}: {dt ^ 2} =
Since F = Fs, we get the following ordinary differential equation:
m {x} + k x = 0.
Simple harmonic motion-spring system
If we assume that we start the vibration system with spring-loaded so far A stretch and then release it, the above equations solution describing the mass movements are:
x (t) = A 2cos (2pi. fn. t)
This solution suggests that the mass will oscillate in simple harmonic motion having an amplitude of A frequency and fn fn number is one of the most important quantities in vibration analysis, and called the undamped natural frequency. For a simple mass-spring system, the fn is defined as:
fn = {1: {2pi}}. root {k: m}
Note: the angular frequency ω (ω = 2πf) and units of radians per second is often used in equations because it simplifies the equations, but the magnitude is usually converted into a "standard" frequency (units of Hz) when stating the frequency of the system.
When the mass and stiffness (a k) Note the frequency of vibration of the system will be determined using the formula above.
Vibration
Vibration analysis
Free vibration with damping
When the attenuation is taken into account, means style silencer also applies on a mass in addition to the force caused by stretching the spring. When moving in a fluid object will get attenuation due to the viscosity of the fluid. The style of this viscosity is proportional to the speed of objects. Due to constant viscosity (viscosity) c is a coefficient with units of reducer, N s/m (SI)
The solution to this equation depends on the magnitude of the damping. When damping is small enough, the system will still vibrate, but will eventually stop. This State is called less mute, and is most cases get attention in the analysis of the vibration. When the attenuation is enlarged so that it reaches the point when the system is no longer oscillates we reach a point of critical damping. When the attenuation is added through this critical point of the system referred to in the State through the mute.
To characterize the amount of attenuation in the system used a ratio called the damping ratio. This ratio is the ratio between the actual amount of attenuation attenuation is required to reach the point of critical damping.
Damped natural frequency less than the undamped natural frequency, however, for many practical cases the damping ratio is relatively small, and hence the difference is negligible. Therefore the damped and undamped description is often not mentioned when declaring natural frequency.
Physics waves and wave length
The waves are vibrations that propagate. The ideal form of a wave motion sinusoide will follow. In addition to electromagnetic radiation and gravitational radiation, which may be able to walk through a vacuum, there are waves on a medium (which because of changes the shape can generate elastic restoring forces) where they can run and can move the energy from one place to another without causing the particles of the medium move permanently; i.e. There is no displacement en masse. In fact, any special point oscillating around one particular position can have an effect on the penis.
A medium called:
linear if different waves at any particular point in the medium can be summed up,
limited if restricted, otherwise it is called unlimited
physical characteristics of uniform if not changed at different points
isotropic in its physical characteristics if the "same" in different directions
The Wavelength
The wavelength is the distance between repeating units of a wave pattern. Usually have denoted the letter lambda (λ) Greece.
In a sine wave, the wavelength is the distance between the peaks.
The x Axis represents length, and I represent the quantity varies (e.g. air pressure for a sound wave or electric or magnetic field strength for light), at a point in the function of time x.
Wavelength λ has an inverse relationship to frequency f, number of peaks to pass a point in a given time. Panjan wave is equal to the speed of the wave divided by the frequency of the wave. When dealing with electromagnetic radiation in a vacuum, this speed is the speed of light c, untuku signal (waves) in the air, it is the speed of sound in air. Connection is::
λ = {c}: {f}
λ = wavelength of a sound wave or electromagnetic waves
c = speed of light in a vacuum = 299, 792.458 km/d ~ 300.000 km/d = 300,000,000 m/s or
c = speed of sound in air = 343 m/s at 20 ° C (68 ° F)
f = the frequency of the wave
Kamis, 03 April 2014
Electromagnetic waves
can be described as two waves of transversal propagated in two perpendicular plane of magnetic field and electric field. Towards magnetic waves will push the electric waves, and vice versa, while climbing, wave power will push the wave magnet. The Diagram above shows a light wave propagating from left to right with the electric field in the vertical plane and horizontal plane on the magnetic field.
Rabu, 02 April 2014
light definition physics
At the height of classical optics, light is defined as electromagnetic waves and triggers a series of inventions and ideas, since 1838 by Michael Faraday with the invention of the cathode ray, 1859 with the black mass radiation theory by Gustav Kirchhoff, the 1877 Ludwig Boltzmann said that the status of the physical system energy can be discrete, quantum theory as a model of the theory of the black mass radiation by Max Planck in 1899 with the hypothesis that the energy is absorbed and teradiasi can be divided into discrete sum called energy elements, E. in 1905, Albert Einstein photoelectric effect experiment, making the light that bathes the atom the electrons to excite leapt out of its orbit. On trial in 1924 by Louis de Broglie showed electrons have the nature of duality particle-wave duality theory erupted, up to particle-wave. Albert Einstein later in 1926 make postulates based on photoelectric effect, that light is composed of quanta called photons have the same duality. The works of Albert Einstein and Max Planck received the Nobel Prize respectively in 1921 and 1918 and formed the basis of quantum mechanical theories developed by many scientists, including Werner Heisenberg, Niels Bohr, Erwin Schrödinger, Max Born, John von Neumann, Paul Dirac, Wolfgang Pauli, David Hilbert, Roy j. Glauber and others.
Light 3
This Era came to be called the era of modern optics and light is defined as a transversal electromagnetic-wave dualism and the flow of particles called photons. Further development took place in 1953 with the discovery of x-ray laser and maser, in 1960.
The Era of modern optics, not immediately put an end to the era of classical optics, but introduces the properties of light to another i.e. the diffusion and scattering.
The definition of light
Light is a wave-shaped energy elekromagnetik visible wavelengths approximately 380 – 790 nm. In physics, light is electromagnetic radiation with a wavelength, whether visible or not.
Light is a particle called the photon packet.
Both of the above definition is shown simultaneously so that the light is called the "wave-particle duality". Packets of light called the spectrum then are perceived visually by the sense of sight as the color. The study of light, known as optics, is an important research area in modern physics.
Study of light began with the advent of the era of classical optics, the study of optical quantities such as: intensity, frequency or wavelength, polarization and phases of light. The properties and interactions of light around a geometric approach to partially done such as reflection and refraction, optical properties of fisisnya and approach are: interference, diffraction, dispersion, polarization. Each study of classical optics, this is called geometrical Optics (en: geometrical optics) and physical Optics (en: physical optics).
Selasa, 01 April 2014
Cable ground, cable neutral, cable phase
The electrical system that goes to our homes, if the use of electric system 1 phase, usually made up of three cables:
The first is the phase cable (red) which is a power source back and forth (positive and negative phase phase back and forth continuously). This cable is a cable that carries power from the hydroelectric (PLN for example); These cables are usually called hot wires (hot), to be compared as the positive Pole on the direct current electrical system (although in physics is not right).
Second is the (black) cable neutral. This cable is basically zero voltage reference cables, connected to the soil in power plants, on specific points (on electric pole) electric network cabling is connected to neutral to ground voltage on the transformer down primarily from high-voltage channels three lines into three phases plus line line ground (four lines) that will be distributed in houses or other.
To address the leakage electric current of the equipment each home installed cable ground (black) connected by a metal plug ground to put together with the neutral cable channels of electric nets mounted on a distance closest to the electric meter or tool close to switch.
In the events of Hurricane Electric space (space electrical storm) are great, there is likely a current will flow from the underlying soil to reference other land that far. This natural phenomenon can trigger large-scale lamp dead events.
Third is the ground or Ground wires (blue, green, black and red colors aside). This cable is a zero reference in the location of the user, which is connected to ground (ground) at the home user, these cables really come from the metal that was planted in the ground in our homes, cable is a cable that is connected to the security body (chassis) alat2 electricity at home to ensure that users of such equipment would not be subjected to electric shocks.
The third cable was rarely fitted to dirumah-rumah inhabitants, be sure the technician (instalatir) electric cord you attach the ground (ground) on the electrical system at home. This is important, because the installer is an absolute requirement for your safety from the hazards of electrical shock that could be fatal and also several power tools that are sensitive will not work properly if there are electrical induction that appears on chassisnya (for example, due to the effects of current Eddy).
alternating current
The flow of electricity flows from positive to negative channels channels. With a direct current of electricity if we hold only the positive cable (but not holding the negative cable), power will not flow into our bodies (we are not exposed to strum Tuesday). Similarly if we just hold a negative line.
With electricity alternating current, electricity can also flow into the Earth (or the floor). This is caused by an electricity system using the Earth as a reference voltage neutral (ground). This reference, which is usually in pairs in two places (one on the ground in an electric pole and another one on the ground at home). Therefore, if we hold the power source and our feet are treading the Earth or our hands touching the wall, the voltage difference between the electrical cable in hand with tension in the legs (ground), making the electricity flowing from hand to foot so we will experience electric shocks ("exposed strum Tuesday").
Electrical power can be stored, for example on a battery or batteries. Small, for example electricity stored in batteries, won't stun effect on the body. The car battery is great, there is usually a slight stun effect, although not too large and dangerous. Electricity flows from the positive pole of the battery/batteries into the negative pole.
Electrical properties
Electricity gave rise to the 4 fundamental forces of nature, and its remains in objects can be measured. In this case, the phrase "the amount of electricity used also with the phrase" electrical charge "as well as" the amount of the charge ". There are 2 types of electric charge: positive and negative. Through experiments, payload-a kind of mutual refused and charge-opposite sex attracted to each other. The magnitude of this style is exciting and rejecting established by Coulomb. Some of the effects of power discussed in electrical and electromagnetic phenomena.
The SI unit of electric charge is the coulomb, which has stood for "C". The symbol Q is used in the equation to represent a quantity of electricity or charge. For example, "Q = 0.5 C" means "the quantity of electric charge is the coulomb 0.5".
If the electricity flowing through the special materials, such as tungsten and tungsten, of light emitted by metal will flare it up. Such materials are used in a light bulb (bulb or bulblamp).
Whenever electricity flows through materials which have barriers, it will be hot removed. The greater the flow of electricity, then the heat arising will be doubled. These properties are used on elements of irons and electric stove.
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