Ukraine Russia conflict summary Upsc

Ukraine Russia conflict summary Upsc

Ukraine Russia conflict summary A Small region in eastern Ukraine known as Donbas adjoins the Russian border. This region has frequent Military conflicts. In region was incorporated into the newly created Ukrainian People’s Republic in 1918, after the fall of the Russian Empire. After this Bolsheviks were fighting the civil war against the remnants of … Read more

Activity to verify laws of reflection

Light Introduction Light is a kind of energy and electromagnetic waves. Optics is a science branch that deals with features and uses of light. Ray optics or geometrical optics is the branch of optics that treat light as rays. Wave optics is the branch of optics where the wave nature of light is considered. Reflection … Read more

Types of radio modulation

Modulation Transmission of data for short ranges does not need any complex procedures. Example an audio frequency of range 20 to 20,000 Hz when transmitted over long distances some techniques are used to transmit the information without any loss. “For long-distance broadcast, the low-frequency baseband signal (input signal) is superimposed onto a high-frequency radio signal … Read more

Electromagnetic waves in free space: Ground, Sky, and Space Wave Propagation

The modulated signal is transmitted by the antenna. It is received at the other end.  2kHz to 400 GHz Frequencies are transmitted with wireless communication. While the signal travels from the transmitter to the receiver, the strength of the electromagnetic wave keeps decreasing. Three modes by which EM waves are transmitted. They are: Ground wave … Read more

Radar and its applications

Radar stands for Radio Detection and Ranging System. Used to detect and locate objects like an aeroplane, missile, ships, etc. Radar uses electromagnetic waves radiated by an antenna in all directions when a signal strikes an object, it gets reflected.  This reflected signal is received by a radar antenna and fed to the receiver. The … Read more

Generation of mobile communication technologies

Generation of mobile communication technologies

Mobile communication introduction Mobile communication is the technology that makes us connect with others (person, devices, etc.), without using physical connections or wires. The first mobile was demonstrated by Martin Cooper and John F. Mitchell of Motorola in 1973. Also, the first commercial cellular network was introduced by Nippon Telegraph and Telephone in 1979 in … Read more

Application of Information and communication technology(ICT)

Application of Information and communication technology(ICT)

Information and Communication technology is used in areas such as Medicine, Defence, e-governance, Banking, etc. With the advances in computing infrastructure and communication got automated in recent times. Application of Information and communication technology Agriculture Widely used in increasing food productivity. Optimize the use of water, seeds and fertilizers. Use of robots, temperature, moisture sensors, … Read more

Sharing your stories has never been easier

Nunc id sapien finibus faucibus odio vitae aliquam eros. Ante ex mauris a mus lobortis, urna elit odio nibh ac aliquet ipsum leo commodo quam. Proin semper leo ligula aenean utt erat non quam amet. Morbi fames tempor purus, at semper velit sapien vel in blandit ante. Etiam feugiat ligula turpis enim pulvinar mollis sed. … Read more

Bones and muscles in the Human body

Bones and muscles in the Human body

Bones and Joints The adult human skeleton consists of 206 bones. The bones along with approximately 700 skeletal muscles account for 50% of our body weight. Bones provide protection and support. When two or more bones join together, a joint or articulation is formed. Several types of joints help in movements. Muscles Muscles are elastic … Read more

* * All the Notes in this blog, are referred from Tamil Nadu State Board Books and Samacheer Kalvi Books. Kindly check with the original Tamil Nadu state board books and Ncert Books.