Thursday, February 28

Three Types of Deserts

Introduction to deserts:

A landscape that receives a very low amount of rainfall is called as Desert. Deserts are the areas with average annual precipitation of less than 250 millimeters (10 in) per year, or as areas where more water is lost by evapotranspiration than falls as precipitation. Desert is the place where plants can’t grow because of the low rainfall. Let us see some main classifications of desert. I like to share this Kinematics Problems with you all through my article.

Monsoon deserts

The word ‘Monsoon’ derived from the Arabic word ‘season’. Because of the drastic changes in the temperature between the continents and the oceans, Monsoons are developed. The southeast wind of the Indian Ocean leads heavy summer rains in India mostly in coastal regions. When the monsoon crosses India, it loses its moisture on coastal Aravalli Range. The Thar Desert of India and pakistan is the part of a monsoon desert region west.

Polar deserts:

Polar deserts are rich in rain fall and it has precipitation per year is less than 250 millimeters and a mean temperature is less than 10° C. In the world, polar deserts totally cover 5 million square kilometers. Sand dunes are not important features in these types of deserts while snow dunes are usually occurs only in low rain fall areas. Please express your views of this topic Permanent Magnet Definition by commenting on blog.

Hot and Dry deserts:

Hot deserts are usually present around the equator. Hot and dry deserts are warm around the year and very hot in the summer. And it has low humidity. It has little rain fall in winter. Very Small but heavy storms are occurs often. The Soil presents in this type of desert is too hard and rocky. Burrowing mammals, insects and reptiles are the main creatures living there. The Sandy Desert of Australia, the Sahara of North Africa (largest desert in the world) the Sonoran Desert of Arizona and northwestern Mexico fall under this category.

Issac Newtons Law


About Sir Isaac Newton’s:

Sir Isaac Newton’s was one of the greatest scientists and mathematicians that ever live. He was born in England on December 25th, 1643. He was born the similar year that Galileo died. He lived for 85 years.

Isaac Newton was raise by his grandmother. He attends Free Grammar School and then went on to Trinity College Cambridge. Newton work his way through college. While at college he becomes interested in math, physics, and astronomy. Newton usual both a bachelors and masters degree. I like to share this newton's law of cooling equation with you all through my article.

Newton’s First Law of motion:

An object at rest will stay at relax unless acted on by an unequal force. Objects in motion continue in motion with the same speed and in the same speed and in the same direction unless acted upon by an unequal force.

This law is often called "the law of inertia".

This means that there is a natural propensity of objects to keep on doing what they're doing. All objects stand firm changes in their state of motion. In the absence of an unequal force, an object in motion will

Keep this state of motion.

Newton’s Second Law of motion:

When a force acts on a mass the acceleration is produced.The greater the mass (of the object being accelerated) the larger the amount of force needed (to accelerate the object).

Everyone automatically knows the Second Law. Everyone knows that heavier objects need more force to move the same distance as lighter objects.

But, the Second Law of motion gives us an exact relationship between force, mass, and acceleration. It can be expressed as a mathematical equation:

F = M X A

Newton’s Third Law of motion:

The Newton’s third law is, meant for every action there is an equal and opposite re-action.This means that for each force there is a reaction force that is equal in size, but opposite in direction. That is to say that at any time an object push another object it gets pushed back in the opposite direction equally hard.

Sir Isaac Newton Science

Sir Isaac Newton Science

Sir Isaac Newton was an English physicist, mathematician, and astronomer, who is widely considered as one of the most influential people in human history. His 1687 publication of the PhilosophiƦ Naturalis Principia Mathematica (usually called the Principia) is considered to be among the most influential books in the history of science, laying the groundwork for most of classical mechanics. In this work, Newton described universal gravitation and the three laws of motion which continues an important role in the scientific view of the physical universe for the next three centuries. Newton also built the first practical reflecting telescope and developed a theory of colour based on the observation of a prism. He also formulated an empirical law of cooling and studied the speed of sound. I like to share this heat capacity equation with you all through my article.

Sir Isaac Newton's Science:

Newton investigated the refraction of light, demonstrating that a prism could decompose white light into a spectrum of colours, and that a lens and a second prism could do the reverse.

His studies proved that coloured light does not change its properties by separating out a coloured beam and shining it on various objects. Newton noted that regardless of whether it was reflected or scattered or transmitted, it stayed the same colour. Thus when objects interact with already-colored light, colour is produced. This is known as Newton's theory of colour. From this work, he concluded that the the dispersion of light into colours can be seen in lens of any refracting telescope. Newton’s contribution to the Law of Gravity is phenomenal and is regarded one of the major break-throughs in the world of Science.

Sir Isaac Newton’s Laws of Motion:

The famous three laws of motion are:

Sir Isaac Newton's First Law (also known as the Law of Inertia) states that an object at rest tends to stay at rest and that an object in uniform motion tends to stay in uniform motion unless acted upon by a net external force.

Sir Isaac Newton's Second Law states that an applied force on an object equals the rate of change of its momentum, with time.

Sir Isaac Newton's Third Law states that for every action there is an equal and opposite reaction

Wednesday, February 20

Meaning of Physical Science

The term physical science may often be misinterpreted to be a particular branch of science. It is actually a term used to group the different branches of natural science that study non living systems. In this context, physical science may seem different from biological science, which deals with the study of living systems. However, there is some confusion that the use of the term physical science creates, because while it deals with non living systems, some of these systems also deal with biological phenomena. There are different branches that come under the aegis of physical science. These include astronomy, physics, chemistry, geology, oceanography, hydrology, meteorology, and soil science. Physical science is based on the different theories and propositions made to explain the different aspects of behavior of nature. I like to share this The Electromagnetic Spectrum Includes with you all through my article.

There have been a number of reputed scientists who have worked in the sphere of physical science, both from ancient and modern times. Eminent people from the ancient times in this field include Aristotle, Archimedes, Robert Boyle, Francis Bacon, Galileo, Nicolaus Copernicus, Thales of Miletus, etc. From the modern times, scientists who worked in this field include Marie Curie, Albert Einstein, James Hutton, Isaac Newton, Linus Pauling, etc.
Science (from the Latin scientia, meaning "knowledge") is a systematic enterprise of gathering knowledge about the world and organizing and condensing that knowledge into testable laws and theories.As knowledge has increased, some methods have proved more reliable than others, and today the scientific method is the standard for science. It includes the use of careful observation, experiment, measurement, mathematics, and replication — to be considered a science, a body of knowledge must stand up to repeated testing by independent observers. The use of the scientific method to make new discoveries is called scientific research, and the people who carry out this research are called scientists.This article focuses on science in the more restricted sense, what is sometimes called experimental science. Applied science, or engineering, is the practical application of scientific knowledge. Having problem with Doppler Shift Formula keep reading my upcoming posts, i will try to help you.

A scientific hypothesis is an educated guess about the nature of the universe, a scientific theory is a hypothesis which has been confirmed by repeated observation and measurement. Scientific theories are usually given mathematical form, and are always subject to refutation if future experiments contradict them.

Magnetic Field Moment

Introduction to magnetic field moment:

Magnetic moment is a determination of its propensity to align through magnetic field. Equally the magnetic moment also magnetic field might be measured towards vectors which contains a magnitude and the direction. The way of the magnetic moment point as of the south within the way of north pole of a magnet. Magnetic field created through a magnet is relative toward its magnetic moment. I like to share this Effective Magnetic Moment with you all through my article.

Magnetic field moment

For instance, circles of electric current, an electron, a tavern magnet, also planet all contain magnetic moments.

Further accurately, the word magnetic moment usually refers toward a system magnetic dipole moment, which it is; create the initial word within the multiple extension of a common magnetic field. Dipole part of object's magnetic field be symmetric on the way of magnetic dipole moment, also reduce like the inverse dice of the distance as of the object.

Magnetic moment of solenoids:

Magnetic moment of a number of turn solenoid is resolute when the vector total of the instant of entity rotates. In the case of the same rotation, it is equivalent just towards the entity that turns instant multiply through the whole number of rotation within the solenoid. Formerly, the value of sum magnetic instant is established, it will be used to create the distant field also to store energy within the outside field and within the similar approach like used for the single-turn circle. Having problem with Centripetal Acceleration Equation keep reading my upcoming posts, i will try to help you.

Type of magnetic sources:

Motion of electric charges.
Intrinsic magnetism of elementary particles.

Magnetic dipole moment

Since the term used for the torque lying on an existing circle, the uniqueness of the existing loop be summarized within its magnetic instant.


Magnetic instant be able to be measured toward exist a vector quantity through the way vertical to the current circle within the right-hand-rule way.

Torque is known through,


When we see within the geometry of an existing circle, this torque be inclined to line up the magnetic instant through the magnetic field B, thus this correspond to its lowly energy configuration. Potential energy related through the magnetic moment can be written as,


Thus, the distinction within energy among aligned also be anti-aligned,


Wednesday, February 13

Space Wave Propagation


Generally the space wave propagation has the following components:

Direct wave
Reflected wave
Direct wave is getting from the transmitting antenna and the reflected wave is getting from the surface of the earth.

Space waves are the waves which are used for satellite communication and line of sight path. The waves have frequencies up to 40 MHz provides essential communication and limited the line of sight paths. Having problem with vector equation keep reading my upcoming posts, i will try to help you.

propagation of space waves:

The output signal which is received from the receiving antenna depends on the phase difference among the direct and reflected rays. The earth cause the reflection of phase difference of 1800. If the differences between the antennas are not too long then the direct and reflected waves which are arriving at the receiving antenna oppose the phase which cancelling each other.

By raising the heights of antennas space waves becomes more effective. The transmission of direct waves is not straight always. It may be refracted on the earth’s surface. Is this topic Regions of the Electromagnetic Spectrum hard for you? Watch out for my coming posts.

Antenna for space propagation:


One of the important components of the space wave propagation is antenna. It is located at both sides of the transmitter and receiver.

The transmitting antenna radiates the electromagnetic waves and the receiver antenna gets the transmitted signal from transmitting antenna. The antenna is acts as a conversion device.

Process of transmitting antenna: Converts the electrical energy into electromagnetic energy

Process of receiving antenna: Converts the electromagnetic energy into electrical energy

Normally the length of the antenna is `lambda/4` . Here the wavelength of radio frequency is `lambda`.

Television signals:

Television signal propagation:

The frequency range of Television signal is from 88MHz to 960 MHz.

Possibilities for transmitting TV signals:

With the help of satellite for communication which can reflect the signals back to earth
With the help of very height antennas
Coverage range: The TV signals can cover the range of d=`root()(2R_eh)` where h is the height of antenna

This covering range of TV signals is increased by increase in height of antenna.

Uniform Motion

Introduction to Uniform Motion

A motion is said to be uniform if the particle covers equal distances in equal intervals of time, however  small these intervals of time may be , always in the same direction. Strictly speaking , no motion is uniform.

When a particle has uniform motion, neither the magnitude nor the direction of velocity changes , so the velocity is constant in uniform motion and is equal to Instantaneous velocity of the particle. I like to share this equation for frequency with you all through my article.

So uniform is a relative concept. If an object A is in uniform motion relative to another object B, then from B's view there appear to be no force applied to A; i.e. it appears to be neither accelerating nor decelerating, nor changing directions or moving in a curve. The same should apply vice versa.

when a particle possess uniform motion, it's velocity- time graph is a straight line parallel to time axis.If the velocity of the particle is taken as positive, the straight line is taken above the time axis and if it is negative, then the V-t graph will be a straight line below the time axis

Uniform Motion : Velocity- time Graph

The Velocity- time graph for uniformly accelerated rectilinear motion is straight line sloping upwards.

The velocity- time graph for a uniformly retarded motion is a straight line sloping downwards.

Let us consider a particle moving with constant acceleration .If U and V be the velocities at time t1 and t2  respectively, then

`V= U+at` gives the equation connecting initial velocity, final velocity, acceleration and time. I have recently faced lot of problem while learning Effects of Radiation on Humans, But thank to online resources of math which helped me to learn myself easily on net.

Uniform Motion : V-t Graphs and Acceleration

The Velocity- time graph for the uniformly accelerated motion of a particle is a straight line sloping upwards.

The area under the V-t graph gives the distance covered by the particle.It is calculated by the equation `V^2= U^2+2ad`

so here distance is as area under Velocity- time graph

The slope of the V- t graph for uniformly accelerated motion gives the acceleration.