Make invisible Ink

Do you want to make a secret letter for someone,a map,a secret message,a secret picture,and so on.
So the question is how to write an invisible message,no doubt you will need an invisible ink that is invisible but appears when needed,I will tell you  how make one

Method 1:

Things you will need:

1. Some lemons.
2.A paint brush.
3.A bowl.
4 a paper to write

What to do:

1 Take the bowl and Squeeze the lemon juice in it.
2.Take the brush and dip it in the lemon juice.
3. Write with the lemon juice on the paper.
4.wait for it to dry and disappear
5.Now,when you want to the message to reappear heat it in front of a bulb or candle flame.

Viola! Your secret is ready.!!!


                     

Make an electromagnetic nail at Home

Things You Will Need:

1.an iron nail
2.about 1 to 1 1/2 feet long copper wire
3. A new battery(The higher voltage the better it is)
4.Some iron made things e.g. paper clips.


What to do:


1.Take the nail and wrap the wire around the nail but leaving some of the part at the end.
The more you wrap the better it will be
2.Now peel the end of the wire at the both ends
4.Now place the two ends at the terminals of the battery.
5.Now place the paper clips at the end tip of the nail you will see that they will stick.


                               Enjoy your own electromagnet







                                                     

                                                                                                                                                                             

Experiments with static electricity

                               

Experiment 1:

What you will need:

1.Balloon
2.Your hair or silk or warm  cloth
3.place near wall

What to do:

1.Take the balloon and rub it with your hair as quickly as possible.
2.make it closer to the wall
3.you will see that it sticks with the wall.

How it works:

*When you rub the balloon with your hair it produces static charge in the balloon which is a negative and when it get closer to the wall it sticks because the wall have + charge and the balloon- the two opposite charge attract each other resulting the balloon to stick.
For best results try on a cold day with less humidity.

Experiment no.2

What you need:

1.A plastic scale(or comb).
2.A piece of paper.
3.A scissor .

What to do:

1.Take the piece of paper and  tear in into small pieces with the scissor.
2.Place the small pieces of paper on a surface.
3.Now rub your scale with your hair for  10 to 15 sec.
4.Now take it closer to the pieces of paper on the surface.

You will see that the pager is trying to stick with the scale .Is it MagiC !!, but The answer is no.

What happened:

*When you rub the scale with your hair it produces static charge in the balloon which is a negative and when it get closer to the piece of paper it sticks because the paper  have + charge and the balloon- the two opposite charge attract each other resulting the balloon to stick.

Now you know that Opposite charges always Attract .

Make helium baloon at home

Things you will need:

1. Baking soda
2.A plastic bottle(any)
3.Balloon
4.two funnels
5.vinegar

What to do:

1.Take the bottle and fill it 1/3 of vinegar with one funnel.
2.Now with the help of another funnel put 1/2 of balloon fill with baking soda.
3.Now put the balloon on the top  the bottle and let the baking soda go inside the bottle and mix with  the vinegar.

(Now bubbles will form and your balloon will start to inflate.)

4.When it is filled tie the balloon's mouth with the string.

Enjoy your balloon.

What happened:

When baking soda is mixed with the vinegar ,the reaction produces a gas (as by product) which fills in the balloon.

*_______________________________________________________________________________*


   

Make Slime with borax powder

       

Things you will need:

1.Half cup of craft glue
2.Some food coloring(any color).
3. Warm water.
4. 1 spoon full of borax powder.
5.Jar for prepration.

What to do:

1.Take one jar and mix borax powder with 1 cup
warm water.
2.Now take the second jar and mix 1/2 cup of warm water with 1/2 cup of glue.
3.Now add food colouring to this.
4.Now mix the two jars togather.
5.Let it set for few minutes.

Enjoy, Your own made slime is ready

*_______________________________________________________________________________**_______________________________________________________________________________*

                                                                                                                                                                                                                                                                                                                             

Make a simple lemon battery

 

Things you will need:

1. A penny
2.Lemon
3.Zinc nail(you can find it on your local hardware store)
4.Copper wires(for connection)
5. A knife(optional)

What to do :

1.Take the lemon and make a cut  on one side
2. now take the zinc nail and poke it on the other              side of the lemon.
3.Connect the wires, one with the  penny and one with the iron nail.
4.connect the two wires to a low voltage device to power it.
Enjoy Free electricity

Remember:

You can make this battery work better if,
*you can use a bigger lemon
*use a zinc plate instead of nail for larger surface area
*Join two or more then two lemons to get better voltage for your battery.

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Make a Volcano at home

                                 

Things you will need:

1# Some mud or dust(you can also use clay or plaster)for the body of the volcano.

2#Some Baking soda.

3#vinegar

4#Some dish washing soap.

5#Some food coloring (red or yellow will be better).

6# Card board (Optional)

What to do now:

1. find a place outside your house and clean up some dust.(You can also make in a card board.).

2. Put the jar down,and make volcano body around the jar.

3. Put 2  tablespoon of baking soda.

4. 1 spoon of dish soap

5.Add 5 drops of  food coloring .

Now make volcano live,

6# Add the vinegar about one ounce.Now watch your volcano erupting.

What Is Happening:

* By adding vinegar to the mixture of baking soda and other substances ,the reaction caused by this, produces  various gases like carbon dioxide,etc. The mixture of  baking soda and vinegar produces gases and the washing soap help to produce bubbles for your volcano.

This is how your volcano is produced.

Try yourself,

Will your volcano work better if: 

* Some thing is more added to this to make this lava real.

*Does the volcano erupts faster if the shape of volcano is changed.

* By increasing the amount of substances and the size of volcano.



                                                               

                                                      Happy playing with volcano

*_______________________________________________________________________________*
*                                                                                                                                                              *

Build a Hover Craft From Balloon

                                           

                     

                          Build a Hover Craft From Balloon

                                 

Things You Will Need:

*A balloon

*An old Cd

*Hot Glue or epoxy

*A water bottle cap(any which works well)

What To Do Now:

* Get The bottle cap and poke a  medium size hole in the center.

*Now,get the CD and at the top of  its center hole fix the cap 

of the water bottle at the center hole of the CD.

*Fix it with hot glue to keep it airtight.

*Now wrap the balloon's end at the top of the cap.

*Your hover craft balloon is almost ready,

Blow it up from the bottom and leave it on the surface,

and u are ready to go.

What Is Happening:

*The flow of air created by the balloon between the surface and the CD make the friction

less applicable to the surface.And the balloon floats easily over a smooth surface.

Try yourself:

Think,

*Will the Hower craft will work better if,

*If u use a big surface area instead of Cd

*If u use a big balloon.

*will a helium balloon will work better then this air filled balloon.

*_______________________________________________________________________________*

  

Explore Science without limits.

In this blog you can learn amazing things & facts about science and technology

Introduction

Humans are never left behind in the race of Science and technology.
From the beginning of  the world, the man has  doing experiments to gain knowledge of science .
From lighting fire from rubbing two stones to going to moon.
I have thought of making this blog useful to students to increase there knowledge in science.
I hope You will find this very useful.