Alarms

Alarms and it’s types 

               Alarms are used to alert people to potential danger. However, they are useless if people don’t recognize the alarm and know what it means. They should know how to respond to a particular alarm. Whether it is a family function, a school, or a place of business, an alarm should be in place to alert people. These days, most alarms are electronic in nature and it helps to understand their components and functionality. In this article we will look at that and also some types of alarms.

Components of alarms:

Electronic alarm systems are made up of components designed to detect, determine and deter threatening situations.

  • Motion Sensors:

    They can detect movement in a room or a corridor.

Alarms

Motion Sensors

  • Glass Break Detectors:

    They are designed to constantly listen for the sound of breaking glass. When it detects the sound pattern caused by shattering glass, it sends an electronic signal to the alarm control panel.

Alarms

Glass Break Detectors

  • Shock Sensors:

    They can detect an intruder who is using force to pound through a wall or any area of a structure.

Alarms

Shock Sensors

  • Keypad:

    Keypad is used to arm and disarm an alarm system. They are generally installed near the entrance or exit of a building.

Alarms

Keypad

 TYPES OF ALARMS

  1. Carbon Monoxide Alarms

Carbon monoxide is an odourless, invisible gas that can lead to poisoning. These alarms use electro-chemical sensing technology to alert you.

  1. Burglary

A thief breaks the glass of your shop! Instantly a high pitched wail sounds in the air! Almost every house or shop abroad has burglar alarms. Unfortunately, the practise is not very common here in India.

  1. Fire

Smoke and fire alarms warn people of the presence of fire in a building. Some alarms have the feature of alerting the nearest fire department. Many places, such as schools and college dormitories, perform drills to practice what to do in case of a fire alarm.

  1. Flood

It has nothing to do with warning you of the infamous Mumbai floods. Water damage from a faulty water heater can be just as damaging to a home as a fire. Flood alarms sense the presence of water and can be programmed to shut the water off when it is nearing a flood zone.

  1. Weather Alarms

U.S faces tornadoes, hurricanes and horrific forest fires every year. It is extremely important to be able to recognize alarms that warn of severe weather. Many cities have public alarm systems that sound informing people to take shelter. The National Weather Service issues severe weather warnings through television and radio broadcasting systems.

        We’ve all seen Charlie’s Angels break into top security vaults and moving out with groundbreaking pieces of technology. They protect our life and our property! How about trying this simple circuit diagram of an alarm available as DIY science project for alarms at http://www.projectsforschool.com

We love to assist our visitors, students, parents in their quest to learn science, you are welcome to leave your questions / comments. Chat with us, use contact us from here or on our facebook page (www.facebook.com/projectsforschool/). In conclusion, drop us an email for any other queries and we would certainly reply with an answer to your queries!!

Irrigation

Irrigation and methods

Our unpredictable Mumbai monsoon teaches us that we cannot rely on just rain for water. So what about the Indian farmer whose livelihood depends on water? Gone are the days when Bhuvan in ‘Lagaan’ would sing “Kale megha, Kale megha, Paani toh barsao” and it would rain cats and dogs! After all, life isn’t like the Bollywood dreamland. No? So, to manage their crop, farmers go for what is called irrigation.

What is irrigation?

It is the artificial application of water to the soil. It is used to assist the growing of agricultural crops.

The different methods of irrigation are:

  • Surface irrigation

Surface irrigation consists of methods in which water is distributed over the soil surface by gravity. The water flows through furrows or pipes and advances across the fields. It is best suited to fine textured soil types which promote lateral spread of water down the furrow row.

Irrigation

Surface Irrigation

  • Sprinkler irrigation

It is a method in which water is sprayed, or sprinkled through the air and falls like rain on fields. The sprinkling devices can be permanently set in place (solid set) and then moved after a particular amount of water has been applied (portable set).

Irrigation

Sprinkler Irrigation

  • Subsurface irrigation

In this process, water is applied below the soil surface. This is done through buried plastic tubes which contain embedded emitters located at a regular spacing. Its efficiency is great resulting in water savings of 25-50% as compared to other techniques.

Irrigation

Subsurface irrigation

  • Drip irrigation

In this process water is dripped through emitters to the soil surface as tiny drops. The discharge rate of the emitters is low so this method can be used on all soil types. This is one of the most common and useful methods.

Irrigation

Drip irrigation

Facts:

Modern methods are a boon to agricultural industry and small time farmers. With its help, the dependence on rain has decreased and so have the worried faces of farmers praying to the heavens. In fact the Andhra Pradesh State government has even taken up the integration of two major rivers Godavari and Krishna with a mission to make Rayalaseema drought free. It will make agriculture flourish. The project name is Pattiseema Project and it is India’s fastest built mega project!

We city people live in pigeon holes where nothing more than a potted plant can grow. But don’t despair, try out the drip irrigation set from http://www.projectsforschool.com and experience first-hand how this process works.

We love to assist our visitors, students, parents in their quest to learn science, you are welcome to leave your questions / comments. Chat with us, use contact us from here or on our facebook page (www.facebook.com/projectsforschool/). Drop us an email, and we would certainly reply with an answer to your queries!!

Top Management Colleges in India

Top 5 Management Colleges in India

               An MBA is a degree for the students who are interested in non-technical fields and Management Colleges in India. Many students also take up MBA most importantly when technical background turns tedious. After engineering, most of the students get into two pathways, one named MS and the other named MBA. I see it happening right now in my college. Three fourth of my friends are giving GRE, the rest are giving CAT. MBA is the glamorous cousin of MS where technical studies are left behind completely.

Following is a list of the Management Colleges in India students should aspire to join if MBA is your thing.

  1. Indian Institute(s) of Management

          The IIMs are the most reputable name in management. IIM Ahmedabad is the best among the IIMs. Their fees are as high as their name. An acquaintance has a student loan of 18 lakh! But the good part is that companies are willing to take you.

Management Colleges in India

Indian Institute(s) of Management

  1. Faculty of Management Studies (FMS)

          It was established in 1954 under the aegis of the University of Delhi. It offers education to the professional managers as part-time and full-time MBA programmes.

Management Colleges in Indai

Faculty of Management Studies (FMS)

  1. Xavier School of Management (XLRI, Jamshedpur)

Commonly known as XLRI Jamshedpur among the aspirants. It offers a postgraduate diploma in Human Resource Management. It equips you with skills to survive any HR role.

Management Colleges in India

Xavier School of Management (XLRI, Jamshedpur)

  1. S.P. Jain Institute of Management and Research (SPJIMR)

It is a constituent of the Bharatiya Vidya Bhavan. Recognized as one of the premier business schools of India. It has a sprawling 45-acre campus in the western suburbs of Mumbai.

Management Colleges in India

P. Jain Institute of Management and Research (SPJIMR)

  1. Shailesh J. Mehta School of Management (SJMSOM)

It is a business school and a part of the Indian Institute of Technology, Bombay. Established in 1995, SJMSOM conducts education and research in leadership, entrepreneurship, technology, management, etc. It offers a full-time degree course (Master of Management) and Management Development Programs (MDP) for company representatives. The school offers short-term programs for the faculty of technical and management institutions.

Management Colleges in India

Shailesh J. Mehta School of Management (SJMSOM)

Recent news said that a 19 year old girl has hit 99 percentile in her first attempt at GMAT. All the CAT and GMAT aspirants really have to sweat it to earn a place in these top management colleges. After all, if you want to spend your life in posh board rooms, the time to work for it is now.

So, if management is your thing, try to get into one of these colleges. Don’t believe what people say. You’ll have a blast in one of the good Management Colleges in India!

In conclusion, this is not the final list of management colleges in India, but certainly, it provides a starting point.

We love to assist our visitors, students, parents in their quest to learn science, you are welcome to leave your questions / comments. Chat with us, use contact us from here or, on our facebook page (www.facebook.com/projectsforschool/). Drop us an email, and we would certainly reply with an answer to your queries!!

Human Kidneys

Interesting Facts about Human Kidneys

Advertisements of rice bran oil and sunflower oil urge us to take care of our “parivaar ke dil ki dhadkan.” However, despite being an important organ in our body, no one talks of taking care of the Human Kidneys.

Two deaths happen every five minutes due to kidney disease in India – two lakh a year!

Kidneys are a pair of bean-shaped organs in the human body. They extract waste from blood and form urine. It is basically situated opposite each other on either side of the spine. The right kidney sits a little lower than the left to make space for the liver. Human Kidneys are connected to the bladder. With the help of two tubes known as ureters. The urine is stored in the bladder.

Human Kidneys

Human Kidneys

Actions of the kidneys include:

  • Waste excretion: The kidneys filter out excess salts, toxins, and urea. Urea is a nitrogen based waste in the human body.
  • Water level balancing: When you are dehydrated, the kidneys reduce production of urine.
  • Blood pressure regulation: The kidneys need constant pressure to filter blood. When the pressure drops, the kidneys increase it.

Because of the toxins the human kidneys encounter, they are susceptible to various problems. Excessive antacids and milk can cause kidney stones. Kidney failure happens due to the build-up of waste products. They cause shortness of breath, lethargy, weakness, and confusion in the body. Lack of ability to filter out excess potassium from the bloodstream may cause abnormal heart rhythms and sudden death.

Lifelong efforts to control blood pressure and diabetes are the best way to prevent kidney disease. If the kidneys fail completely, the only treatment may be dialysis or kidney transplant. The worst part about living with kidney disease is that it is a silent killer. Initially, symptoms are few and recognized at a very late stage.

Also worth knowing : Haemodylasis

Haemodialysis is cleansing the blood of toxins and extra salts through a dialysis machine. It helps maintain chemical balance and keeps blood pressure under control. Blood is pumped through the machine, where waste products and excess water are removed. This purified blood is then returned to the patient’s body.

Facts about the Human Kidneys

The blood flow in kidneys is higher than the blood flow in the heart, liver and brain!

Exactly half of one single kidney is capable of doing the job that is performed by two kidneys together. This is exactly why the symptoms aren’t diagnosed till very late!

Each individual kidney consists up to 2 million nephrons. Nephrons are tiny filters that can filter blood and eliminate waste materials. The Nephrons cover a distance of 16

kilometres if placed end to end.

The entire blood in the body gets filtered around 400 times in a day through the kidneys! The kidneys reabsorb and redistribute 99% of the blood volume that they filter. Only 1% of the blood that kidneys filter becomes urine.

10% of the adult population (500 million) have some form of kidney damage. Every year millions die of cardiovascular diseases linked to Chronic Kidney Disease.

Alcohol affects kidneys much more than being emphasized.

Remember this –

Human Kidneys disease can never be reversed.

Projects for school provide a working model of human kidney (/product/working-model-of-kidney-school-project-for-kids/) for young scientists to understand the functioning of human kidneys. We also provide a step by step pictorial guide to make this working model yourself.

We love to assist our visitors, students, parents in their quest to learn science, you are welcome to leave your questions / comments, chat with us, use contact us form here or on our facebook page (www.facebook.com/projectsforschool/), drop us an email, and we would certainly reply with an answer to your queries!!

Ten most important scientific discoveries

Ten most important scientific discoveries 

Talking about ten most important scientific discoveries, we will begin by asking a question. Can you imagine the world without medicines and antibiotics? Diseases that have been now eradicated most of all like Polio, Bubonic, Typhus, were epidemics at one point. Ailments that killed human beings have a cure only because of the persistence and hard work of man. However, that is not all. There is much more to scientific discoveries and inventions, beyond just medicines and antibiotics. There’s the Physics, the Chemistry, Scientific Phenomena and much more! In this article, let us look at 10 such game changing scientific discoveries of man.

  1. The Copernicun System

On his deathbed, Polish astronomer Nicholas Copernicus published his theory that the sun is at the center of the solar system, with the planets revolving around it. Before the Copernican system was introduced, astronomers believed the earth was at the center of the universe. If not for this, we’d still go around thinking that the sun revolves around the earth rather than the other way round.

The Copernicum System

The Copernicun System

  1. Gravity

In 1664, Isaac Newton, an English mathematician and physicist Newton figured out that gravity is the force that draws objects toward each other. As a result, law of gravitation came to be known. If not for gravity, I wonder if we could figure out how to go to the space.

Gravity.jpg

Gravity

  1. Electricity

Michael Faraday discovered that when a wire carrying an electric current is placed next to a single magnetic pole, the wire rotates. He therefore produced an electric current by moving a wire consequently through a magnetic field, creating the first generator. As a result, his discovery revolutionized the entire electricity generating process.

Electricity

Electricity

  1. Evolution

Charles Darwin, the British naturalist, came up with the theory of evolution. It states that all organisms evolve very slowly over time. Due to these changes allow a species to adapt and survive in its environment. If a species doesn’t adapt, it may become extinct. He therefore, called this process natural selection. It’s often called the survival of the fittest. It was this discovery that helped us finally reach an acceptable line of conclusion regarding how humans probably came into being.

Human Evolution

Human Evolution

  1. Bacteria

Before French chemist Louis Pasteur began experimenting with bacteria in the 1860s, people did not know what caused disease. He discovered that disease came from microorganisms and that bacteria could be killed by heat and disinfectant. Most relevantly, doctors now sterilize their instruments saving millions of lives from epidemics of past!

Bacteria

Bacteria

  1. Theory of Relativity

Albert Einstein published the theory of relativity in 1905. It furthermore explains the relationships between speed, time and distance. The complicated theory states that the speed of light always remains the same—300,000 km/second regardless of how fast someone or something is moving toward or rather away from it. Not just that, relativity became one of those philosophical understandings which could bring into perspective therefore brought much more about life than mere physics!

Theory of Relativity

Theory of Relativity

  1. The Big Bang Theory

In 1927, Georges Lemaître proposed the Big Bang theory of the universe. The theory says that all the matter in the universe was originally compressed into a tiny dot. In a fraction of a second, the dot expanded, and all the matter instantly filled what is now our universe. The event marked the beginning of time. As a result, scientific observations seem to confirm the theory.

The Big Bang Theory

The Big Bang Theory

  1. Penicillin

Antibiotics are powerful drugs that kill dangerous bacteria in our bodies curing disease. Alexander Fleming discovered the first antibiotic, penicillin, which he grew in his lab using mold and fungi. Most noteworthy with this game changer that the entire human civilization consequently found a higher life expectancy and protection against almost many bacterial infections that were most probably yet fatal.

Penicilin

Penicilin

  1. DNA

On February 28 1953, James Watson of the United States and Francis Crick of England basically discovered the double-helix structure of DNA. Furthermore, DNA became the most important segment of the human beings.

DNA

DNA

  1. Periodic Table

Russian chemist Dmitry Mendeleev had noticed that, when arranged by atomic weight, the chemical elements lined up to form groups with similar properties. He was able to use this to predict the existence of undiscovered elements.

Periodic Table

Periodic Table

Therefore in conclusion, at http://www.projectsforschool.com, we decided to bring to you some interesting snippets from the world of science. This article seems like has covered these amazing discoveries; man wouldn’t be leading a comfortable and long life. Furthermore, we have the previous generations to thank for these discoveries. They have transformed our entire life!! Keep a watch on this section for more such interesting pieces!