Top 10 healthy fruits

As we know that, " Health is Wealth ". If we don't have good health, it's waste even if we are rich. Due to work tensions and busy life, many people are neglecting their health. So, if we eat fruits daily which are rich in nutritious gives us health, increases our life time and our ability etc... Here are the top 10 fruits which keeps us healthy...

Top 10 healthy fruits :


1. Cherries :

Cherries are small in size. These will grow in cool places. These are having attractive colors. Cherries help calm your nervous system..

2. Strawberry :

These are also in small in size like cherries. These are red in color.These sour in taste. Strawberries can potentially fight against cancer and aging. 

3. Banana :

Bananas are having vitamin B. These are more useful for digestive purpose. Bananas are great for athletes because they give you energy. If we eat bananas while going to bed we can sleep Happily.

4. Grapes :

Grapes are having two different kinds of colors. They are : green and black. Some of the grapes having seeds and other grapes are not having seeds. Grapes relax your blood vessels. 

5. Kiwi :

As so many people know that kiwi is national fruit of China. These are for facial purpose. Kiwis increases bone mass. By eating kiwi fruit we improve our bone strength.

You can also see : How to glow an LED by using Aloe Vera



6. Mango :

There are different kinds of mangoes. They are useful for making pickels, facial and used in curries etc., mangoes are having vitamin C. Mangoes protect against several kinds of cancer.

7. Watermelon :

Watermelon contains 90% of water.. Watermelon helps control your heart rate.

*1 watermelon/ day = No Asthma*

8. Oranges :

Oranges are round in shape. They are sour and bitter in taste. Oranges help maintain great skin and vision. 

9. Apple :

As we know that ' Apple keeps doctor away ' from this we can  know that how much an apple is healthy. Apples grow in coolest areas. Apples help your body develops resistance against infections.

10. Pineapple :

Pineapples are useful for blood circulations. Fat people can also eat pineapples. It is just like tonic for heart.

How to glow a LED by using Aloe vera

Now a days electricity is a basic need for human kind. Many villages are dark at nights even technology  is developed. So, the guys from polytechnic discovered, how to glow a LED from alovera. So, let's see how to glow a LED.

Aloe vera

Requirements :

1.  Aloe vera
2. Copper rods
3. Zinc rods
4. Multimeter
5. LED
6. Connecting wires
7. Shouldering rods


Circuit designing:

To glow the LED from aloe vera, first take 9-15 pieces of aloe vera and they are connected with copper and zinc rods in series connection. Instead of using copper and zinc rods we can also use needles. Just to know winch one is anode and cathode we are using zinc and copper rods connect a multimeter in parallel connection across the load terminals as shown in the figure and then connect an LED across the multimeter.

Figure 

Working :

As we know that, most of the electricity is generating from water. This aloe vera contains 99.7% of water and 0.3% of gel. In this 99.7% of water containing magnesium and calcium etc., are present, due to the presence of zinc and copper rod  the chemical reaction takes place and small amount of voltage regenerated from aloe vera and passed through the connecting wire which is sufficient to glow the LED. We can measure how much of voltage is generating from aloe vera.


*From one piece of aloe vera the voltage Will be generated upto (0.6-0.8)v*

Aloe vera pieces

Precautions :

1. Aloe vera pieces should be approximately in same size

2. The copper rod should not extended more than two inches and the zinc rod should be less than copper rod.

3. Connections should be firm


Advantages:

1. It is an eco-friends mini projects.

2. There is no wastage

3. Initial and maintance cost are low


Disadvantage :

The output may not be accurate if the connections are not properly connected.




This is the project from polytechnic students... Try it out and be innovative.. If you've any doubts or circuit problems, please comment below... The students will help you...