මහළු වෙනකොට සම රැලිවැටෙන්නේ ඇයි?

මහළු වියේදී තම දුර්වල ශරීරයට අවශ්‍ය ශක්තිය ලබා ගන්නට සම යට ඇති තෙල් හෙවත් මේද තට්ටුව දියවේ. එවිට පිරුණු පෙනුම නැතිවෙන නිසා තමන්ගේ ශරීරය වසා තමාව අලංකාර ලෙස පෙන්වමින් තිබූ තම හම රැලි වැටුනු ස්වභාවයක් ගනී.

ඇඹුල් ආහාර දත් හිරිවට්ටයි

දත්වල ඇති එනමලය කිසියම් දියකිරීමක් කරන්නට ඇඹුල්වල ආම්ලික ගතියට හැකියාවක් ඇත. එනිසා දත්වල ඇති ස්නායු පිටතට විවෘත වන නිසා දත් හිරිවැටීමක් වැනි දෙයක් සිදුවේ.

old television

Television

The invention of television was the work of many individuals. It rapidly developed during the 20th century as a result of the work of a number of people. On March 25, 1925, John Logie Baird gave the first public demonstration of televised images in motion. Afterwards, on January 26, 1926, he demonstrated the transmission of […]

Ice Sheets

ලොව වැඩිම ප්‍රමාණයක් මිරිදිය ජලය අන්තර්ගත වී ඇත්තේ කුමන ස්ථානවල ද?

එක්සත් ජනපද භූ විද්‍යා සමීක්ෂණයට අනුව ලෝකයේ මිරිදිය සම්පත් සඳහා මගපෙන්වීමෙ හි ලෝකයේ මුළු ජල ප්‍රමාණයෙන් 96% කට වඩා වැඩි ප්‍රමාණයක් එහි සාගරයේ රඳවා ඇති බව සඳහන් වේ. කෙසේ වෙතත් එය මූලික වශයෙන් ලුණු ජලයයි. ලෝකයේ මිරිදිය ජලයෙන් වැඩි ප්‍රමාණයක් සොයා ගැනීමට ඔබ ධ්‍රැව වෙතට යා යුතුය. ඒ අනුව ලොව වැඩිම ප්‍රමාණයක් මිරිදිය ජලය අන්තර්ගත […]

plant with folowers

Diversity Of Plants

Plants are a large group of living components in nature which has a has stems, leaves, roots, flowers, seeds etc. They are really important for the planet and for all living things. So let us learn about the diversity of plants briefly. Types of plants According to the ability of producing flowers plants can be […]

Teacher

World Teachers’ Day: Why Do We Celebrate?

World Teachers’ Day, also known as International Teachers’ Day, is an international day held annually on October 5 since 1994. It recalls the signing of the 1966 UNESCO/ILO Recommendation concerning the Status of Teachers. World Teachers’ Day aims to focus on “appreciating, assessing and improving the educators of the world”. And also it provides an […]

Functions Of Business

A business is an organization or entity that provides goods or services to consumers to fulfil their needs and wants. Businesses can function with a profit or a non-profit motive. It can also be owned by one person or a group of people. The activities needed to operate a business are known as the functions […]

Refuelling

Why Do Vehicles Have Fuel Doors on Different Sides?

Car manufacturers could easily produce all cars with the fuel door on the same side. But they don’t do it for a matter of practicality. When traffic is heavier and more refuellings are made, if all the cars were with the tank flap on the same side, only one side of the pumps would be […]

Friendship Day

International Friendship Day: Why Do We Celebrate It?

The UN established the International Friendship Day through the resolution 65/275, to lay the foundations for a better world and prevent future conflicts. The resolution emphasizes the involvement of young people. As future leaders, they should be actively involved in the community. So, it was set up to ensure that they themselves promote a spirit […]

Aluminum Impact

Hypervelocity Impact

This image shows the results of a lab test impact between a small sphere of aluminum travelling at approximately 6.8 km/second and a block of aluminum 18 cm thick. This test simulates what can happen when a small space rubble object hits a spacecraft. In such an impact, the pressure and temperature can exceed those […]