We all must be aware about the meaning of the current. Yes, it is rate of flow of charge. Do you know that when an electric circuit having a ohmic resistance is switched on, the current reaches to maximum value almost in zero time and when the circuit is switched off, the current drops to zero from maximum value in a no time. This you can observe while switching on or off an electric circuit having ohmic resistance only.
But do you know that if there is inductor or capacitor in a circuit, the current will not become maximum from zero or from maximum to zero in no time. The current will take a finite time or one can say it is a gradual process. Thus the electric current which takes finite time to become maximum from zero or zero from maximum in circuits having inductors and capacitors (condensers), then such time of currents are called transient currents.
To understand the concept of interference and conditions for sustained interference, let us first discuss the superposition principle.
Superposition principle enables us to find the resultant of two or more wave motions.
According to this principle, when two or more waves travelling through a medium superimpose upon one another, a new wave is formed in which resultant displacement . at any instant is equal to the vector sum of the displacements due to individual
waves . at that instant
For example, when crest (or trough) of one wave falls on crest (or trough) of the other, the amplitude of the resultant wave is sum of the amplitudes of two waves.
When crest of one wave falls on trough of the other, the amplitude of resultant wave is difference of the amplitude of the two waves. Continue reading “6 conditions for sustained inteference”
In this article, we will discuss about the photon and its properties:
A photon is basically a basic particle which carries with itself electromagnetic energy. The light coming from sun has different wavelengths or energy and on the basis of it, we have different regions like visible, infrared, ultraviolet and many more. But one thing is common in all these regions is photon but of different frequency so different energy.
Thus photon is basically a quantum of light.
Properties: Continue reading “Photon and its properties”
Definition of cathode rays:
Cathode rays are the group of fast moving negatively charged particles. These negatively charged particles are electrons. These rays are shot out at a high speed from the cathode of a discharge tube at a pressure below 0.01 mm of mercury.
15 Properties of Cathode rays:
1. Cathode rays travel in straight lines.
2. These rays are deflected by electric field. This is obvious because these rays are nothing but electrons.
3. These rays travel normally from the surface of cathode. Continue reading “Cathode rays and their 15 properties”
There are many many field in the area of science to do research. One should be completely dedicated towards his or her work for the same, then sky is the limit only.
Let us discuss few of the science fields to do research and make career. The following fields are the broad area, the sub area under each of these fields are so many and will be discussed later on:
1. Environmental Science: We all know that our environment is getting degraded day by day. Thus there are so many research topics and career avenues in this field. The environment science as a subject is taught from schools. Continue reading “Upcoming science fields to do research and make career”
Let us today discuss the 10 properties or characteristics of gamma rays.
1. Gamma, γ-rays are not deflected by electric and magnetic fields. It shows that they do not have any charge.
2. Gamma, γ-rays are electromagnetic waves like X-rays. The wavelength of γ-ray photon is smaller than that of X-rays. Continue reading “10 Properties of gamma rays”
Last time I have discussed the properties of alpha particles. Toady let us discuss the important properties or characteristics of beta (β) particles:
- A beta (β)- particle carries 1.6 x 10-19 C of negative charge, which is the charge on an electron.
- The mass of β-particle is 9.1 x 10-31 kg, which is the same as that of electron.
- The velocity of β-particles ranges from 33% to 99% of the velocity of light. Continue reading “Properties of beta particles”
Today with constant improvisation in Science and Technology, we are in a fast period of progression and production!
One of the technological advancements that make living easy and much more convenient is indubitably the invention of robots. Robots are men-like machines that are capable of performing any scale of tedious tasks, they are programmed for. They have shown a remarkable contribution in cut down the human work load especially in industries. Continue reading “Human is the Passé, here comes the Robos!”
The alpha, α – particles possess following 10 properties:
1. Alpha, α – particle carries double the positive charge of proton, which is equal to the charge on the helium nucleus.
2. Mass of an alpha, α – particle is roughly four times that of hydrogen atom i.e. it is equal to the mass of the helium nucleus.
The above two properties establish that an alpha, α – particle is equivalent to helium nucleus (or a helium atom which has lost its two orbital electrons i.e. a doubly ionized helium atom). Continue reading “10 properties of alpha particles”
Definition of radioactivity:
The phenomenon of emission of active radiations by an element was termed radioactivity. The element exhibiting this property was called radioactivity element.
Natural radioactivity is a spontaneous and self disruptive activity exhibited by a number of heavy elements occurring in nature. The word spontaneous means by its own or by shear out of nature of the element and self disruptive means that the element disintegrates itself i.e. no external provocation influences the emission. Radioactivity is, therefore, the property by virtue of which a heavy element disintegrates itself without being forced by any external agent to do so. Continue reading “Definition and introduction of radioactivity”