Java Lesson 2 "Working with Operators"

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The Java programming language has includes five simple arithmetic operators like are + (addition), - (subtraction), * (multiplication), / (division), and % (modulo). The following table summarizes the binary arithmetic operators in the Java programming language. The relation operators in Java are: ==, !=, <, >, <=, and >=. The meanings of these operators are: Use Returns true if op1 + op2 op1 added to op2 op1 - op2 op2 subtracted from op1 op1 * op2 op1 multiplied with op2 op1 / op2 op1 divided by op2 op1 % op2 Computes the remainder...

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Java Lesson 1- Welcome to Crazyscience Family

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Our first lesson is an extremely simple program which priints " Welcome to Crazyscience Family". The about mentioned sequence of words will be printed in java. Java Program is defined by public class that takes the form: Syntax:        public class program-name        {        optional variable declarations and methods        public static void main(String[] args);        {        Statements        }  ...

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What is Java?

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Java is a programming language originally developed by James Gosling at Sun Microsystems (which has since merged into Oracle Corporation) and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities than either C or C++. Java applications are typically compiled to bytecode (class file) that can run on any Java Virtual Machine (JVM) regardless of computer architecture. Java is a general-purpose, concurrent, class-based,...

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What is WIFI

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Wi-Fi is the name of a popular wireless networking technology that uses radio waves to provide wireless high-speed Internet and network connections. A common misconception is that the term Wi-Fi is short for "wireless fidelity," however this is not the case. Wi-Fi is simply a trademarked term meaning IEEE 802.11x. The Wi-Fi Alliance, the organization that owns the Wi-Fi (registered trademark) term specifically defines Wi-Fi as any "wireless local area network (WLAN) products that are based...

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What is Internet and How it actually works?

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The history of internet Began in the 1950s as a point to point communication between mainframe computers which was used for defence purpose. The internet was first developed by ARPANET, an American Company. The U.S defence administration used this facility to communicate at the time of emergency and other security related matters.  Internet works by 2 concepts (TCP/IP) TCP is Transmission Control Protocol: a protocol developed for the internet to get data from one network device to another;...

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Mammoth Cave, Kentucky, USA

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Mammoth Cave in Mammoth National Park is part of the longest cave system in the world, and is a world heritage site.The caves have formed in thick deposits of carboniferous limestone, with a sandstone cap-rock. With over 630 km of passageways and cave, the National Park was established to help preserve and protect the cave system. New discoveries are adding distance to the cave system every year. The Geology of the caves has been put together really well in the documentary "Geology of Mammoth Cave,...

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"TRILLIONS OF CARATS" OF DIAMONDS

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The Siberian branch of the Russian Academy of Sciences has revealed that the 100 kilometre wide Popigai Astroblem crater, from a meteorite which hit Earth 35 million years ago, contains a dense deposit of industrial diamonds (good for technological purposes but not jewelry). The deposit was apparently discovered in the 1970’s, but the Soviets decided to keep it a secret so that they didn’t upset a world diamond market that already favoured them. Nikolai Pokhilenko, the head of the Geological and...

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Top 10 automobile Companies in 2012

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10. Renault Renault is one of the leading automobile manufacturers of the world present in 118 countries. It has worldwide sales of over 2.5 million vehicles and a total workforce of 130,000 employees.   9. Hyundai Motors Hyundai is one of the fastest growing brands in the automobile industry  and is currently among the top 10 in the global market. Hyundai vehicles are sold in 193 countries through some 6,000 dealerships and showrooms worldwide through 75,000 employees. 8. Nissan...

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What is an Automobile

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An automobile is a self-propelled motor wheeled vehicle which runs by the combustion of fuel. It is primarily used for  transportation of people and goods. Automobiles are mainly designed for running on roads. But now-a-days the deficit of fuel had made the companies to develop hybrid cars which runs by both fuel and electricity. A Hybrid car model  &nbs...

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Into the Universe with Hawkings

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The Legend Mr. Stephen Hawkings is the former Lucasian professor of mathematics at Cambridge University and the author of the Famous Book "A Brief History of Time" which was an international Best seller. Now he is the Director of Research at the Institute for Theoritical Cosmology at the same Cambridge University. His other books include A Briefer History of Time ,Black Holes,Baby Universe and The Universe in a Nutshell .  In 1963, unfortunately he was attacked by motor neurone disease...

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Windows 8 (an overview)

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The latest up gradation of windows operating syatem is Windows 8 which provides a new environment between you and the computer and of course has better performance with perfect repairing tools and some excellent new tools and options in windows store.Windows 8 has captured the minds of people essentially by making a small mix over its design. lets learn something about Win 8. you can download Windows 8 preview through the link  http://windows.microsoft.com/en-US/windows-8/download The start...

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Boundaries of Bermuda Triangle

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The boundaries of bermuda triangle covers the Straits of Florida, the Bahamas and the Atlantic east to the Azores. And the most accidents were found concentrated in the Bahamas and the Florida Straits. The area is one of the most intemperatively travelled shipping lanes in the world, essentaily the ships crossing for their ports in America, Europe and Caribbean Islands. It is also a heavily travelled air route towards Florida, Caribbean and South Americ...

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Bermuda Triangle

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Bermuda Triangle is one of the most popular mystries of the world. Its right to say it as devil's triangle which is situated in the western part of North Atlantic Ocean. The place carries several unexplained questions and cases about missing of aircraft and ships. The first person who documented about bermuda triangle is Gian J Quasar. His research accomplished about 20 years and he filed large private repository of reports and official documents containing 350 cases over centuries. Of them...

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What is Binomial Nomenclature

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It is a system of naming all living organism in two parts. The two parts are named Genus and Species which are derived only from Latin. The first letter of the Genus name Should always be in Capital while the Species name should begin with Small letter. Example:-  Binomial name of Human is Homo sapiens                                                      Homo   - Genus          ...

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Planetary Nebula

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This is a composite colour Hubble image of NGC 6751, a planetary nebula with complex features. It is 6,500 light years away in the constellation Aquila. The diameter of the nebula is around 0.8 light years (600 times the size of our solar system). The colours represent the relative temperatures of the gas; blue, orange and red indicate the hottest to coolest gas. The streamer-like features of the nebula were created by winds and radiation from the central star, which at 140,000°C is rather hot. The...

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The Constellation Cygnus

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This image is a mosaic, showing clouds of colourful gas and dark lanes of dust. The light from the gas and dust is too faint for the human eye to see; long exposure times and special filters were used. Cygnus is a northern constellation which lies on the plane of the Milky Way; the name is the Latin word for swan. It was first catalogued by the 2nd century astronomer Ptolemy; it is one of the 88 modern constellations. The constellation contains the Northern Cross, Cygnus X-1, the stars Deneb and...

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Life May Exist on Titan

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Saturn’s sixth and largest moon Titan has an average surface temperature of 94.2611Kelvin (-178.889°C or -290°F). Nitrogen comprises 98.4% of the atmosphere. Water is perpetually frozen; it can almost be considered a mineral. The seas of Titan are made up of hydrocarbons like methane, ethane, and some propane. The land masses are composed of frozen water and ammonia, which also exist in liquid states below Titan’s crust, much like silica and iron exist in liquid form below Earth’s crust. Titan...

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The Ant Shaped Nebula

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The Ant Nebula, aka Mz3, is a young bipolar planetary nebula in the constellation Norma. It is 8,000 light years away from Earth and it has a magnitude of 13.8. It was discovered by Donald Howard Menzel in 1922. The nebula is composed of a bright core and four high-velocity outflows which have been variously named as lobes, columns, rays, and chakram. The gas being ejected travels at 1000-kilometres per second and the structure is one light year long. So why is this nebula an odd shape? There...

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The Farthest Spiral Galaxy Ever Seen

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At the edge of the observable universe, where most galaxies appear as blobs, lies BX442. It is found within the constellation Pegasus and has a redshift of 2.18; meaning it is 10.7 billion light-years from Earth and therefore existed just 3 billion years after the big bang. Astronomer David Law and his team at the University of Toronto, St. George, in Canada used the Hubble Space Telescope to examine 306 distant galaxies. They spied a galaxy with three spiral arms, and confirmed the distance of...

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Silver and Gold are created by Stellar Explosions

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Heidelberg scientist Dr. Camilla Hansen, working with scientists in Germany, Japan and Sweden, has shown that silver can only have materialised during the explosion of clearly defined types of star, different from the type of stars that produce gold when they explode. Evidence for this came from the measurement of various high-mass stars; by continuing with these kinds of measurements the components of all matter can be reconstructed. Lightweight elements like hydrogen, helium and lithium were...

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ARP-148 Mayall's Object

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Arp 148, also known as Mayall's Object, is the result of two colliding galaxies located 500 million light years away within the constellation of Ursa Major. This collision resulted in a ring-shaped galaxy and a long-tailed companion. The shockwave effect produced from the collision first drew matter into the centre and then caused it to spew outwards in an expanding ring. The object was discovered on 13 March 1940 by Nicholas U. Mayall of the Lick Observatory, using the Crossley reflector....

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Mozambique Spitting Cobra

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It is the second most poisonous snakes which has its nativity of Africa. Its has olive grey or tawny brown color skin and about 2.5 to 3 feet and grows to a maximum length of 4 ft. The Cobra spits its venom for protection which is poisonous to cause death. The venom causes immediate blind on contact of venom in eyes. Taxonomy  Kingdom:  Animalia Phylum: Chordata Class:         Reptilia Order:         Squamata Sub-order:   Serpentes Family:...

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Russell Viper

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These snakes are commonly found Asia and its one of the most poisonous snake in India. It can grow up-to a maximum length of 5.5 ft. The symptoms of the bite begins with a pain followed by immediate swelling and bleeding. The blood pressure and heart beat falls. Pain lasts for 2-4 weeks and finally death occurs if untreated. Taxonomy  Kingdom:      Animalia Phylum:        Chordata Sub-phylum:      Vertebrata Class:        ...

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Egyptian Cobra

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Egyptian Cobra are found in the deserts of Africa. These are the most poisonous among the cobra family. It grows to about 3 to 6 ft and may exceed about 9ft. Its venom affects the central nervous system by stopping the nervous transmission between heart and lungs. Ultimately causing the death of the organism. Taxonomy Kingdom: Animalia Phylum: Chordata Class:         Reptilia Order:         Squamata Sub-order:   Serpentes Family:  ...

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Black Mamba

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Black Mamba kind of snakes are mostly found in the forests of Africa. They are about 2.5 to 3 meter long with its scales yellowish green to gun metal grey. They are most poisonous and its bite directly affects the central nervous system. The effect of its bite paralyzes the person in 20 minutes and death occurs in 30 to 60 minutes, sometimes it may take up-to 3 hours. And the mortality rate is almost 100%. Taxonomy  Kingdom       :Animalia Phylum      ...

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Linnaeus system of Classification

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Of the many systems of classification Linnaeus system is followed till now. According to this Every living thing is divided into Kingdom, Sub-kingdom or phylum, Class, Family and genus and Species.  ...

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Effect of Heat on dissolving Sugar

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Things You Need Sugar cubes Cold water in a clear glass Hot water in a clear glass (be careful with the hot water) Spoon for stirring The Way You Do Make sure the glasses have an equal amount of water. Put a sugar cube into the cold water and stir with the spoon until the sugar disappears. Repeat this process (remembering to count the amount of sugar cubes you put into the water) until the sugar stops dissolving, you are at this point when sugar starts to gather on the bottom of the glass rather than dissolving. Write down how many sugar cubes...

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Stabbing Potato Using Straw

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Things You Need Stiff plastic drinking straws A raw potato The Way You Do Hold a plastic drinking straw by it sides (without covering the hole at the top) and try quickly stabbing the potato, what happens? Repeat the experiment with a new straw but this time place your thumb over the top, covering the hole.  What You Observe  Placing your thumb over the hole at the top of the straw improves your ability to pierce the potato skin and push the straw deep into the potato. The first time you tried the experiment you may have only...

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Breeding Bacteria

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Things You Need Petri dish of agar Cotton buds Some old newspaper (to wrap petri dish when disposing) The Way Do Prepare your petri dish of agar. Using your cotton bud, swab a certain area of your house (i.e. collect a sample by rubbing the cotton bud on a surface of your choice). Rub the swab over the agar with a few gentle strokes before putting the lid back on and sealing the petri dish. Allow the dish to sit in a warm area for 2 or 3 days. Check the growth of the bacteria each day by making an observational drawing and describing the changes. Try...

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Bathing Salts

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Things You Need 1 cup of washing soda A plastic bag A rolling pin (or something similar that can crush lumps) A bowl A spoon for stirring Essential oil Food coloring powder  The Way You Do Take the cup of washing soda and put it into a plastic bag. Crush the lumps with a rolling pin or similar object. Empty the bag into a bowl and stir in 5 or 6 drops of your favorite essential oil such as rosemary, lavender or mint. Stir in a few drops of food coloring until the mixture is evenly colored. Put the mixture into clean dry containers and...

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Glowing Water

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Things You Need A black light (you can find them at places like Walmart and hardware stores, as well as online stores like Amazon). Tonic water or a highlighter pen. A dark room to do the experiment.  The Way You Do If you are using a highlighter pen carefully break it open, remove the felt and soak it in a small amount of water for a few minutes. Find a dark room. Turn on the black light near your water, how does it look? What You Observe Black light (also known as UV or ultra violet light) is a part of the electromagnetic spectrum....

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Egg is Boiled or Raw

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Things You Need Two eggs, one hard boiled and one raw.  Make sure the hard boiled egg has been in the fridge long enough to be the same temperature as the raw egg. The Way You Do Spin the eggs and watch what happens, one egg should spin while the other wobbles. You can also lightly touch each of the eggs while they are spinning, one should stop quickly while the other keeps moving after you have touched it. What You Observe  The raw egg's centre of gravity changes as the white and yolk move around inside the shell, causing...

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Vinegar Volcano

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Things You Need Baking Soda (make sure it's not baking powder) Vinegar A container to hold everything and avoid a big mess! Paper towels or a cloth (just in case)  Baking Soda (make sure it's not baking powder) Vinegar A container to hold everything and avoid a big mess! Paper towels or a cloth (just in case) The Way You Do Place some of the baking soda into your container. Pour in some of the vinegar Watch as the reaction takes place  What You Observe  The baking soda (sodium bicarbonate) is a base while the vinegar (acetic...

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You can make Quick Sand

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Things You Need 1 cup of maize cornflour Half a cup of water A large plastic container A spoon  The Way You Do This one is simple, just mix the cornflour and water thoroughly in the container to make your own instant quick sand. When showing other people how it works, stir slowly and drip the quick sand to show it is a liquid. Stirring it quickly will make it hard and allow you to punch or poke it quickly (this works better if you do it fast rather than hard). Remember that quick sand is messy, try to play with it outside and don’t forget...

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Mixing Oil and Water

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Things You Need Small soft drink bottle Water Food colouring powder 2 tablespoons of cooking oil Dish washing liquid or detergent  The Way You Do Add a few drops of food colouring to the water. Pour about 2 tablespoons of the coloured water along with the 2 tablespoons of cooking oil into the small soft drink bottle. Screw the lid on tight and shake the bottle as hard as you can. Put the bottle back down and have a look, it may have seemed as though the liquids were mixing together but the oil will float back to the top.  What...

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Melting a Chocolate

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Things You need Small chocolate pieces of the same size (chocolate bar squares or chocolate chips are a good idea) Paper plates Pen and paper to record your results  The Way You Do Put one piece of chocolate on a paper plate and put it outside in the shade. Record how long it took for the chocolate to melt or if it wasn't hot enough to melt then record how soft it was after 10 minutes. Repeat the process with a piece of chocolate on a plate that you put outside in the sun. Record your results in the same way. Find more interesting locations...

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Egg Floats in Salt Water

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Things You Need One egg Water Salt A tall drinking glass  The Way You Do Pour water into the glass until it is about half full. Stir in lots of salt (about 6 tablespoons). Carefully pour in plain water until the glass is nearly full (be careful to not disturb or mix the salty water with the plain water). Gently lower the egg into the water and watch what happens.  What You Observe  Salt water is denser than ordinary tap water, the denser the liquid the easier it is for an object to float in it. When you lower the egg into...

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Experimental Proof for Dark Colour absorbs more Heat

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Things You Need  2 identical drinking glasses or jars Water Thermometer 2 elastic bands or some cello-tape White paper Black paper  The Way You Do Wrap the white paper around one of the glasses using an elastic band or cello-tape to hold it on. Do the same with the black paper and the other glass. Fill the glasses with the exact same amount of water. Leave the glasses out in the sun for a couple of hours before returning to measure the temperature of the water in each.  What You Observe Dark surfaces such as the black paper...

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What is Nebula?

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A nebula is an interstellar cloud in outer space that is made up of dust, hydrogen and helium gas, and plasma. It is formed when portions of the interstellar medium collapse and clump together due to the gravitational attraction of the particles that comprise the...

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Exoplanets give insight into Planet Formation

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A team of astrophysicists led by EXOEarths researcher Dr Vardan Adibekyan of the Centro de Astrofísica da Universidade do Porto, Portugal have found that metals like magnesium might play a significant role in the formation of low mass planets. The team used the European Southern Observatory’s High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph to observe and analyse the high-resolution spectra of 1111 Sun-like stars. Of these, 109 are known to have high mass Jupiter-like planets,...

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Water - The most abundant compound in the Universe

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Water is the most abundant compound in the universe; its composition consists of the 1st and 3rd most abundant elements, hydrogen and oxygen (helium is the 2nd most abundant element). Water in liquid form is common on Earth, but on other planetary bodies in the Solar System it is usually present as vapour or ice.  After the Solar System formed, most of the water was locked up as ice in the surface or interiors of the farthest planetary bodies. Earth actually has little water, comparatively,...

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Carina Nebula

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This is the Carina Nebula, between 6,500 and 10,000 light years away from Earth in a constellation of the same name. This single pillar of gas and dust measures three light years in height; the red and purple hues of the nebula come from hot hydrogen gas interacting with ultraviolet radiation from the nebula's massive young stars that are buried within it. &nbs...

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Helix Shaped Nebula

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While this may look like a green version of the eye of Sauron, this Spitzer Space Telescope image shows infrared radiation from the Helix Nebula (NGC 7293). The nebula is 700 light years away, within the constellation Aquarius. The dust and gas gathered around the central white dwarf is two light years in diameter.  The nebula is considered an excellent example of a planetary nebula in the final stages in the evolution of a sun-like star. The bright infrared glow surrounding the central...

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Exoplanets discovered by Kepler Telescope

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Till now, 41 new transiting exoplanets have been discovered by NASA's Kepler space telescope in twenty different star systems. The studies (currently in peer review) could increase the number of exoplanets discovered by the Kepler Telescope by more than fifty per cent.  Image caption: The diagram shows the newly submitted transiting planets in green along with the unconfirmed planet candidates in the same system in violet. The systems are ordered horizontally by increasing Kepler number...

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Three Nebulae in a narrow Band

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These nebulae get their beautiful appearance from narrow band filters and a false-color palette. The three nebulae are stellar nurseries about 5,000 light-years distant, toward the nebula rich constellation Sagittarius. Charles Messier catalogued M8, above and right of centre and M20 at the left, in the 18th century. The third nebula is NGC 6559, at bottom right. M8 is also known as the Lagoon Nebula and is over 100 light years across; M20 is also known as the Trifid. The image is a composite;...

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SOMBRERO GALAXY

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This ring is part of the Sombrero Galaxy, also known as M104; one of the largest galaxies in the nearby Virgo Cluster of Galaxies. The galaxy spans about 50,000 light years across and is 28 million light years away. This image is in infrared light; in this light the dark band of dust that obscures the mid-section of the Galaxy glows brightly. This image, digitally sharpened, was recorded by the orbiting Spitzer Space Telescope, superposed in false-colour on an existing image taken by NASA's Hubble...

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TARANTULA NEBULA

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The Tarantula Nebula is found near the star cluster NGC 2074, and is located within the Large Magellanic Cloud (LMC); one of our closest galaxies. It is also known as 30 Doradus or NGC 2070. It is named Tarantula as the arrangement of its bright patches somewhat resemble the legs of a tarantula. It is nearly 1,000 light years across, and has a high concentration of massive stars, referred to as super star clusters. The image is based on data acquired with the 1.5 m Danish telescope at the ESO...

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