Dr Rajiv Desai
An Educational Blog
CYBERCRIME
CYBERCRIME: ____ This educational website was hacked by cyber-criminals on 7 February, 2017 and their threat note was posted on website as shown below: ____ Prologue: Former Chief Justice of India R M Lodha received an email from his friend Justice B P Singh seeking immediate monetary help of Rs 100,000 for the treatment of his cousin. The email said Singh was unavailable over the phone and that was why he was emailing for help. This was not the first time they were emailing each other and an unsuspecting Justice Lodha immediately transferred the money in two transactions at the account number given in the email. Justice Lodha had the shock of his life when he later received a mail from Singh that his email was hacked and Justice Lodha was cheated of Rs 100,000 by a cybercriminal. The world of internet today has become a parallel form of life […]
5G
5G ___ ___ Prologue: Today’s wireless networks have run into a problem: More people and devices are consuming more data than ever before, but it remains crammed on the same bands of the radio-frequency spectrum that mobile providers have always used. That means less bandwidth for everyone, causing slower service and more dropped connections. The rapid increase of mobile data growth and the use of smartphones are creating unprecedented challenges for wireless service providers to overcome a global bandwidth shortage. As today’s cellular providers attempt to deliver high quality, low latency video and multimedia applications for wireless devices, they are limited to a carrier frequency spectrum ranging between 700 MHz and 2.6 GHz. Carrier frequency is the basic operative frequency of radio wave that carries information (voice, video, data) from one place to another place by modulation. A modulated carrier radio wave, carrying an information signal, occupies a range of […]
POPULATION PROBLEM
Population Problem: _ _ Prologue: In an interview given to Economic Times, JRD Tata had reminisced how Nehru once retorted to his concerns on rising population. “Nonsense, a large population is the greatest source of power of any nation,” the first prime minister of Independent India is believed to have told the industry doyen. Subsequently India’s bulging population was seen as threat to the country’s future so much so that Nehru’s grandson, Sanjay Gandhi, ran a controversial campaign of forced sterilization during the emergency (1975-77). Their present Prime Minister Narendra Modi red-flagged population explosion in the course of his Independence Day speech. Mainstream politicians, journalists, and academics frequently avoid discussing population issues since notions about population are often seen as being politically or ideologically motivated. As a result, population debates are generally argued from the fringes. Some groups characterize population growth as a Ponzi scheme, whereby increasing numbers of youth […]
DRUG ADDICTION
Drug Addiction: _ Intravenous injection of heroin typically causes a rush within seven to eight seconds. This method of drug use provides the highest intensity and quickest onset of the initial rush but is also the most dangerous. Also, approximately 10% of new HIV infections worldwide are attributable to injecting drug use, often of an opiate such as heroin. ______ Prologue: Drugs are fascinating because they change our awareness. The basic reason people take drugs is to vary their conscious experience. Seeking pleasure is a human trait and certain chemicals which give a feeling of high or pleasure have always been used by some people everywhere. Of course, there are many ways to alter consciousness, such as listening to music, dancing, exercising, day dreaming and participating in religious rituals etc. and the list suggests that changing consciousness is something people like to do. People use substances (drugs) to alter their […]
SCIENCE OF MUSIC
Science of Music: _____ “Happy Birthday, Mr. President” is a song sung by actress and singer Marilyn Monroe on May 19, 1962, for President John F. Kennedy at a celebration of his 45th birthday, 10 days before the actual date (May 29). The event marked one of Monroe’s final public appearances; she was found dead in August 1962 at the age of 36, and JFK was assassinated the following year. _____ Prologue: The fascinating thing about music is that technically- in a very literal way- it doesn’t exist. A painting, a sculpture or a photograph can physically exist, while music is just air hitting the eardrum in a slightly different way than it would randomly. Somehow that air- which has almost no substance whatsoever- when vibrated and when made to hit the eardrum in tiny subtle ways- can make people dance, love, cry, enjoy, move across country, go to war […]
