Why does it hurt when an ant bite?

                                     Why does it hurt when an ant bite?

If I were to say scientifically , ants do not bite. Ants are not like mosquitoes. Mosquitoes suck the blood but we do not feel pain as they inject anesthetic to numb that area.
But ants dont have that mechanism. Actually , ants dont feed on our blood like mosquitoes. They bite us only for self defense  They spray formic acid    from their tail. This perticular acid hurts. If we are not alive , we would die because of effect of this acid.
Its chemical formula is HCO2H. It is usually found in venom of bee and ant stings.  Formic acid has low toxicity . However concentrated one may kill us.

Liquid silver

                                           Liquid silver

Here i am not referring about silver jewellary.  There is an element which is also referred as liquid silver because of its appearance.
It is mercury. It is having the chemical name Hg and atomic weight of 80. It is also known as quick silver or hydrargyrum.  Because of the name hydrargyrum, it has got the chemical name Hg. Mercury is the only metal which is liquid at standard condition of temperature and pressure .
The only other element which is liquid at these conditions is Bromine. The element mercury is toxic. It is widely used in thermometers , barometers , sphygmomanometers etc. It is used in clinical conditions because of its toxic nature . It is also used in amalgam material for dental restoration.
Mercury   is also used in tubelights found in houses . Electricity is passed through mercury vapours in florescent lamps producing short wave ultraviolet light , which then causes the phosphor in the tube to fluoresce, making visible light. 

Monkey's day out in our garden

                             Monkey's day out in our garden

After finishing all the tender coconuts in our coconut trees, monkeys were gone to some other place in search of fresh tender coconuts.  But today morning , I spotted a lone monkey in our garden. I shouted at it. It stared at me as if it is not scared of any one.
I wondered why it has come again? It has finished all the tender coconuts in trees. But I didnt see its family members. It was alone. May be other members have asked it to go to our garden and inspect what all left ? what is the new development?
I remembered God  Hanuman has come to Lanka in search of Sita. Similarly , this monkey has come in search of tender coconuts which it has forgotten to pluck and drink !
God Hanuman = Lone monkey spotted in my garden.
Sita = tender coconuts .
Ravan = me !
I am thinking of burning monkey's tail as Ravan did . Now I know exactly what Ravan felt when he saw Hanuman in his country . !

Eagle nest

                                           Eagle nest

As I was walking in garden in the morning time, I observed an eagle busy picking up wooden sticks. But because of the sound made by my crutch , it was alert and carried the sticks in its beak and flew away over my head. I said assuring words but it flew away.
According to my knowledge , the eagle must be preparing tools for its nest. Henceforth , I will call it as pregnant eagle. But if it is pregnant, its stomach must be bulged. But the eagle looked quite normal and it flew normally too.
I remembered the wordings of book regarding birds : only the mammals' stomach will get bulged when they are pregnant. Like humans  and other animals. Pregnant eagle usually lays 2 eggs in its nest. Its nest usually situated in higher positions like our pregnant eagle had selected a coconut tree !
In eagles , it is female domination. Female species are much stronger compared to male . But both , male and female look after the eggs , the other one will be off to food fetching. Out of 2 eggs it has put , if one of them is male and the other one is female , they will fight as soon as they born, and female will be victorious and it will kill its brother infront of parents !

How does fog form?

                                  How does fog form?

In morning, I could see fog in the surroundings of my house. In the place of high humidity , like ours ,  fog is formed. Tiny water droplets are also dropping on the head.
Fog is a natural weather condition that can cause visibility to become zero. In some places, (not ours !) schools delay their opening time,  until the Sun burns fog off.
How does the fog form ? Fog is basically a cloud on the ground. These clouds are the collection of tiny water droplets formed when evaporated water is cooled. The infrared cooling is responsible for the fog formation .
Infrared cooling is formed due to the change of seasons from summer to fall and winter.  During the summer , the ground absorbs solar radiation. As air passes over it, it is made moist and warm. This mass of warm air collides with cooler air.
This cause the water vapour in the air mass to condense quickly  and fog is formed.