A Polymath's Paradise

Horses – .  A long time ago many types of goods cars were pulled by horses. It did not pull passengers but it was pulling mine cars filled with coal from the coal mines to other places. It only pulled goods. There were some problems as the horse had to sleep at night so it cannot go continuously or overnight. It was mostly used just for transporting goods like coal. Steam engine s Steam engines were also helpful. It was invented by James watt. It used coal and water for steam. This made the pistons move in a full circle. The first steam engine in  I ndia was  M umbai to thane in 1853. it covered a distance of 34 kilometers. Steam engines were hard to maintain. You had to keep filling coal continuously. Diesel engines – Diesel engines were run by diesel. They did not need continuous filling. They could cover long distances and pull heavy loads. But they caused a lot of pollution as the smoke produced by burning diesel goes into the atmosphere. Electric trains Electric trai...

THE OLDEN TIMES • In the olden times messages were delivered by horse riders to other places. This was very hard as they had to cover a long distance and only taking short breaks. There were dharmashalas(resting houses) and tree side roads for the travelers.   There were also step wells so the messengers can drink water. Soon there were pigeons which delivered messages. This was easier as all they had to do was tie the message to the pigeons leg. TELEGRAPH • Telegraphs  were a huge help. It used Morse code for communicating. But everybody did not have a telegram. It was kind of a public communication system. You tell the message in the post office and they will use Morse code to deliver your message by  telegram. The person on the other side will write it on a paper. It will be posted to the correct address by the postman. TELEPHONe • Telephones changed the lives of people. It was invented by Alexander Graham Bell. Telephones are even faster than telegrams. You ...

 We all know that the earth is getting polluted. There are some types of pollution like water pollution, noise pollution , air pollution and land pollution. Today we are going to talk about air pollution. Air pollution is caused by gaseous pollutants such as oxides of nitrogen and carbon monoxide. All those gases are caused because of human activities. Humans are polluting the air by driving vehicles, using planes etc. All of these activities causes air pollution. It also causes acid rain as the harmful gases are mixed with water droplets. Acid rain decreases the fertility of the soil. To reduce Air pollution we can reduce the usage of vehicles. If we don't stop Air pollution then we will have to face its consequences in the future.                                   

• One of the first computers Computers in olden times were very big and they were used with binary code. Soon those computers were replaced by computers that used commands Example command quit. You should remember the commands or you cant do the work. Later windows came into life. It had a mouse so the work would become easy. The mac was also introduced in 1985.  The laptop Computers were at the top when laptops came into use. Laptop is a smaller size of a computer. It can be kept on a lap and is portable. There are many laptop companies such as Dell,HP,Macintosh etc. Now a days there are laptops that can transform into tablets. And the laptops are also hi tech. • Tablets and phones • Tablets are even smaller than laptops. They are also easily portable. They can be carried in a smaller bag. It also provides internet and photos. Tablets used to be small but now they are a bit big and hi tech. Mobile phones are even smaller than tablets. It can be kept in a pocket. It is used for tal...