Tuesday 13 July 2021

Why Hummingbirds are So Attractive?

These majestic tiny birds are extremely fascinating for many reasons. The way they fly, their colorful feathers, and their high-pitched chirping are just a few of the things that make them so interesting to watch. When it comes to diversity in nature, there is no bird as diverse as the hummingbird. The hummingbird family contains more than 310 species divided into two subfamilies: The 28 Neotropical species and the 292 Nearctic species, with each living in different parts of North America (their home continent). These two groups can be further divided into 10 genera with 18 different species that reside in California alone. Hummingbirds live on average anywhere from 2-7 years, but some have been documented living up to more than 10 years.


Friday 8 May 2020

What is an Invention?

What is an Invention?

An invention is something that is developed by a person, or by a team of people, usually in response to a need. From paper cups to pencils, good inventions make our lives easier. Other inventions, such as candy bars, make our lives more fun. Some inventions meet an obvious need. The first can opener, invented in 1855, was made almost 60 years after the invention of the sealed tin can; before this, cans were opened with a hammer and chisel. Innovation is the application of better solutions that meet new requirements or needs. For example, the innovations to the light bulb—from incandescent to compact fluorescent to LED—has meant brighter lighting.

What is a discovery?

Discoveries and inventions often complement each other, but they are different things. A discovery is when something that already exists is found. The discovery of lodestone, a magnetic rock, led to the invention of the first compass, which sailors used to navigate.

Who was first?

Many inventions have been developed by different people at the same time. A famous example is the light bulb, first made by Englishman Joseph Swan and by American Thomas Edison in 1878. The two had not worked together.

What is a patent?

A patent is a legal document that grants sole rights to an individual or company to make, use, and sell an invention for a certain period of time. A patent protects an original idea, so the inventor can make money from it.

 


Thursday 18 April 2019

The Common Black Kite

The Common Black Kite is often seen in Subcontinent. The bird is relaxing in pleasant weather. 

 Read More – What is Happiness in Life / Source: CP