Interesting Facts about Human Body

1.) Eyes: You Blink about 20000 times a day.

2.) Hair: Hair grows about .5 mm (.02 in) a day.

3.) Mouth: You will produce 37,800 l of saliva in your life.

4.) Cells: There are 50 trillion cells in your body and 3 billion of themdie every minute.

5.) Nerves: Your body has about 13000000000000 nerve calls, transmitting message at speed of 290 km/hr.

6.) Brain power: You lose 100000 brain cells every day! The main thing is that you have 100 billion altogether. If surface area of your brain could be ironed out it wouldmeasure 2090 sq.cm.

7.) Heartbeats: Your heart pumps 13640 L of blood around your body in a day. An average heartbeat rate per minutes of our body is 70 beats and this will adds more than 100000 beats a day.

8.) Urine : You will pass 400 to 2000 ml of urine every day, depending on your age, your size and outside conditions, especially temperature.

9.) Chemicals: There is enough carbon in your body to fill 900 pencils, enough Fat to make 75 candles, enough phosphorous to make 220 match heads and enough iron to make a 7.5 cm nail.

10.) Can you overdose on vitamins? Overdosing on some vitamins can have serious side effects.
Vitamin A: Doses of more than 3752 mg can lead to liver damage,hair losses and headaches.
Vitamin B6: Doses of more than 400mg can cause numbness in the mouth.
Vitamin C: Stomach ache can be caused due to high doses of Vitamin C.
Vitamin D: Daily doses of 600 mg can interfere with the functioningof muscles.
Niacin: Doses of upto 2000 mg are prescribe to help lower cholesterol but this could cause jaundice and liver damage.

11.) Tea Or Coffee? The two main constituents of tea are“caffeine and tannin”. A tea bag contains about 40mg of caffeine and brewed tea about 30mg. Tea also contains useful fluorides, volatile oils and Vitamin B. “Caffeine” is the main constituent of coffee. A cup of brewed coffee contains about 80 mg of caffeine and instant coffee about 60 mg. Medical studies show that heavy caffeine use (more than 500 mg/day) may cause harmful physiological effects. A cup of tea or coffee (without sugar and milk)contains about 16KJ of energy.

12.) Fingers: Our fingers are so sensitive that they can detect a vibration with a movement of 0.02 cm. Our “finger nails” grow at the rate of about 0.05 mm in a week and hair about 3 mm in a week. 

Interesting Human Body Facts

- The largest cell in the human body is the female egg, and the smallest is the male sperm.

- A full bladder is roughly the size of a soft ball (a bit bigger than a cricket ball).

- It takes food seven seconds to get from your mouth to your stomach.

- The attachment of human muscles to skin is what causes dimples.

- The average man's penis is three times the length of his thumb.

- A woman's heart beats faster than a man's.

- If the average male never shaved, his beard would be 13 feet long when he died.

- Men with hairless chests are more likely to get cirrhosis of the liver than men with hair.

- There are about one trillion bacteria on each of your feet.

- Side by side, 2000 cells from the human body could cover about one square inch.

- Women blink twice as much as men.

- The average person's skin weighs twice as much as their brain.

- When you are looking at someone you love, your pupils dilate...they do the same when you are looking at someone you hate!

- Your ears secrete more earwax when you are afraid than when you aren't.

- Your body uses 300 muscles to balance itself when you are standing still.

- If saliva cannot dissolve something, you cannot taste it.

Some Facts on Energy

Coal generates more electricity than any other source. It produces twice as much electricity as natural gas.
America burns nearly half of the world’s gasoline.
More than 1/5 of the world’s primary energy is used for transport, followed by industry, construction, and
agricultures. Much is in the form of gasoline, of which nearly 792.5 million gallons is burned every day.
The top seven oil consumers combined use more than half of the world’s total. The United States alone uses
more than a quarter.
A “watt” is a unit of power that measures the rate of producing or using energy. The term was named after
Scottish engineer James Watt (1736-1819), who developed an improved steam engine. Watt measured his
engine’s performance in horsepower. One horsepower equaled 746 watts.
Just 1/3 of the energy in burning coal reaches the consumer as electricity.
Researches note that energy is the key “to the advancement of civilization” and that energy is the catalyst
that allows human societies to evolve.
The word “energy” comes from the Greek energeia, meaning operation, activity.
Energy cannot be destroyed or created—only transformed.
Albert Einstein defined energy as mass multiplied by the speed of light squared, or e=mc2.
Food contains energy, which is measured in calories or joules.
oil reserves The world's oil reserves will last until 2052
According to the World Fact Book 2008, the world’s oil reserves will
last until 2052 and gas reserves will last until 2065.e
The World Coal Institute says that, at current production levels,
proven coal reserves are estimated to last 147 years. That means no more coal after 2155.
More than 1/3 of the world’s crude oil is refined into gasoline. Other main products are distillate fuel oil
(mainly diesel oil) and jet fuel (mainly kerosene).
Inefficient appliances, drafty windows and doors, poor insulation, and other fixable energy wasters cost U.S.
consumers an estimated $300 billion a year—more than the U.S. military budget.
If a person yelled for 8 years, 7 months, and 6 days, he or she would produce enough energy to heat one cup
of coffee.
A hurricane releases 50 trillion to 200 trillion watts of heat energy. This is as much energy as a 10-megaton
nuclear bomb exploding every 20 minutes.

TIME AND DISTANCE (Basic concepts)

1. Distance = Speed * Time
2. Time = Distance / Speed
3. Speed = Distance/Time
4. To convert speed in km/h to m/sec, multiply it with 5/18.
5. To convert speed in m/sec to km/h , multiply it with 18/5.
6. If a body travels from point A to point B with a speed of 'p' and back to point A (from point with a speed
of ‘q’, then the average speed of the body is:
= 2pq/(p+q).
7. If a car does a journey in 'T' hrs, the first half at 'p' km/hr and the second half at 'q' km/hr. The total
distance covered by the car = (2 * Time * p * q ) / (p + q).
8. If a body covers part of the journey at speed p and the remaining part of the journey at a speed q and the
distances of the two parts of the journey are in the ratio m : n, then the average speed for the entire journey
is:
= (m+n) pq / (mq+np).
9. If a person travelling between two points reaches ‘p’ hours late (If time is given in minutes, it should be
converted into hrs by dividing it by 60) travelling at a speed of 'a' km/hr and reaches 'q' km/hr and reaches q
hours early travelling at 'b' km/hr, the distance between the two points is:
= (ab/a‐b)(p‐q)
10.If a person goes from 'A' to 'B' at a speed of 'p' kmph and returns at a speed of 'q' kmph and takes 'T'
hours in all, then the distance between the A and B:
= Total time taken * (Product of the two Speeds / Addition of the two speeds)
11. If two persons A and B start at the same time in opposite direction from two points and after passing
each other they complete the journeys in 'a' and 'b' hrs respectively, then A's speed : B's speed= Square root
of b : Square root of a.
12. If A travels certain distance at the rate of 'S1' kmph and B covers the same distance at the rate of 'S2'
kmph and if one of them takes 't' minutes longer than the other, then:Distance covered = {(S1 x S2) x
Difference in time to cover the distance} / (S1‐S2)
Note :‐ If speed is given kmph and time is given in minutes, then time is to be expressed in hrs. before
solving the problem using this formula.

Scientists Discover How to Boil Water in Under a Trillionth Of a Second

With a breakthrough that will hopefully eventually trickle down to tea kettles, coffee machines, and even
showerheads, researchers at the Hamburg Center for Free-Electron Laser Science in Germany have devised a
way to boil water to 600 degrees celsius in less than a trillionth of a second. To put that into perspective, as
the folks at DESY point out, one picasecond is to a second what one second is to 32,000 years.
And all that's needed to prep a piping hot cup of tea faster than the blink of an eye is a concentrated blast of
terahertz radiation made up of electromagnetic waves falling somewhere between radio waves and infrared
light on the frequency spectrum. It's generated using special lasers that send electrons hurdling down a zig-
zag course that emit electromagnetic waves as they race through the bends. When the terahertz blast hits
water molecules, it causes them to immediately and intensely vibrate, resulting in a near instant boil—and
then some.
There are some caveats to this new technique, though. For starters, it's currently just theoretical, having only
been tested (and confirmed) in supercomputer simulations. But the equipment needed to test it in real life
should be ready soon. The other problem is that the simulation was performed on only a billionth of a liter of
water—no where near enough for even a sip of coffee.

Ohms law example In C

# include
#include
#include
int main()
{
char ch;
float voltage , current , resistance , result;
printf("Ohms law calculator.\n");
printf("Please choose from following calculcations.\n");
printf("1. choose 1 to calculate the voltage.\n");
printf("2. choose 2 to calculate the current.\n");
printf("3. choose 3 to calculate the resistance.\n");
printf("Anything else to quit.\n");
scanf("%c",&ch);
switch(ch)
{
case '1' :
printf("please enter the current in amps.\n");
scanf("%f",¤t);
printf("Now enter the resistance in ohms.\n");
scanf("%f",&resistance);
result = current * resistance;
printf("The voltage is %0.2f volts.\n",result);
break;
case '2' :
printf("please enter the voltage in volts.\n");
scanf("%f",&voltage);
printf("Now enter the resistance in ohms.\n");
scanf("%f",&resistance);
result = voltage / resistance;
printf("The current is %0.2f amps.\n",result);
break;
case '3' :
printf("please enter the voltage in volts.\n");
scanf("%f",&voltage);
printf("Now enter the current in amps.\n");
scanf("%f",¤t);
result = voltage / current;
printf("The resistance is %0.2f ohms.\n",result);
break;
default :
exit(0);
break;
}
return 0;
}

Measurement !!!!!!!!

1 Bit = Binary Digit
8 Bits = 1 Byte
1024 Bytes = 1 Kilobyte
1024 Kilobytes = 1 Megabyte
1024 Megabytes = 1 Gigabyte
1024 Gigabytes = 1 Terabyte
1024 Terabytes = 1 Petabyte
1024 Petabytes = 1 Exabyte
1024 Exabytes = 1 Zettabyte
1024 Zettabytes = 1 Yottabyte
1024Yottabytes = 1 Brontobyte
1024 Brontobytes = 1 Geopbyte
1024 Geopbyte=1 Saganbyte
1024 Saganbyte=1 Pijabyte
Alphabyte = 1024 Pijabyte
Kryatbyte = 1024 Alphabyte
Amosbyte = 1024 Kryatbyte
Pectrolbyte = 1024 Amosbyte
Bolgerbyte = 1024 Pectrolbyte
Sambobyte = 1024 Bolgerbyte
Quesabyte = 1024 Sambobyte
Kinsabyte = 1024 Quesabyte
Rutherbyte = 1024 Kinsabyte
Dubnibyte = 1024 Rutherbyte
Seaborgbyte = 1024 Dubnibyte
Bohrbyte = 1024 Seaborgbyte
Hassiubyte = 1024 Bohrbyte
Meitnerbyte = 1024 Hassiubyte
Darmstadbyte = 1024 Meitnerbyte
Roentbyte = 1024 Darmstadbyte
Coperbyte = 1024 Roentbyte

Chemicals & Their Common Chemical Names

Acid Of Sugar —Oxalic Acid
Ackey —Nitric Acid
Alum —Aluminum Potassium Sulfate
Alumina —Aluminum Oxide
Antichlor —Sodium Thiosulfate
Antifreeze —Ethylene Glycol
Aqua Fortis —Nitric Acid
Aqua Regia —Nitrohydrochloric Acid
Arsenic Glass —Arsenic Trioxide
Azurite —Mineral Form Of Basic Copper Carbonate
Asbestos —Magnesium Silicate
Aspirin —Acetylsalicylic Acid
Baking Soda —Sodium Bicarbonate
Benzol —Benzene (Data by http://goo.gl/8a2rgq )
Bitter Salt —Magnesium Sulfate
Black Ash —Crude Form Of Sodium Carbonate
Black Lead —Graphite (Carbon)
Bleaching Powder —Chlorinated Lime; Calcium Hypochlorite
Blue Vitriol —Copper Sulfate (Data by http://goo.gl/8a2rgq )
Bone Ash —Crude Calcium Phosphate
Brine —Aqueous Sodium Chloride Solution
Calomel —Mercury Chloride; Mercurous Chloride
Caustic Lime —Calcium Hydroxide
Caustic Soda —Sodium Hydroxide
Chalk —Calcium Carbonate
Diamond —Carbon Crystal
Epsom Salt —Magnesium Sulfate
Ethanol —Ethyl Alcohol
Fluorspar —Natural Calcium Fluoride
Glauber's Salt —Sodium Sulfate
Green Vitriol —Ferrous Sulfate Crystals
Gypsum —Natural Calcium Sulfate
Heavy Spar —Barium Sulfate
Indian Red —Ferric Oxide
Laughing Gas —Nitrous Oxide
Lime —Calcium Oxide
Lime (Unslaked/Quick/Burnt) —Calcium Oxide
Lime (Slaked) —Calcium Hydroxide
Limewater —Aqueous Solution Of Calcium Hydroxide
Litharge —Lead Monoxide (Data by http://goo.gl/8a2rgq )
Magnesia —Magnesium Oxide
Marble —Mainly Calcium Carbonate
Methanol —Methyl Alcohol
Oil Of Vitriol —Sulfuric Acid (Data by http://goo.gl/8a2rgq )
Orthophosphoric Acid— Phosphoric Acid
Pearl Ash —Potassium Carbonate
Plaster Of Paris —Calcium Sulfate
Potash —Potassium Carbonate
Pyro —Tetrasodium Pyrophosphate
Quicksilver —Mercury (Data by http://goo.gl/8a2rgq )
Red Liquor —Aluminum Acetate Solution
Rochelle Salt —Potassium Sodium Tartrate
Rock Salt —Sodium Chloride
Silica —Silicon Dioxide (Data by http://goo.gl/8a2rgq )
Slaked Lime —Calcium Hydroxide
Soda Ash —Sodium Carbonate
Soluble Glass —Sodium Silicate
Sour Water —Dilute Sulfuric Acid
Spirit Of Salt —Hydrochloric Acid
Spirit Of Wine —Ethyl Alcohol
Table Salt —Sodium Chloride
Table Sugar —Sucrose
Talc Or Talcum —Magnesium Silicate
Vinegar —Impure Dilute Acetic Acid
Vitriol —Sulfuric Acid (Data by http://goo.gl/8a2rgq )
Washing Soda —Sodium Carbonate
Water Glass —Sodium Silicate
White Caustic —Sodium Hydroxide
White Vitriol —Zinc Sulfate Crystals

Do you know what Chandrasekhar limit is?

The Chandrasekhar limit is the maximum mass of a stable white dwarf star. The limit was first published by
Wilhelm Anderson and E. C. Stoner, and was named after Subrahmanyan Chandrasekhar who improved upon
the accuracy of the calculations.White dwarfs, unlike main sequence stars, resist gravitational collapse
primarily through electron degeneracy pressure, rather than thermal pressure. The Chandrasekhar limit is the
mass above which electron degeneracy pressure in the star's core is insufficient to balance the star's own
gravitational self-attraction. Consequently, white dwarfs with masses greater than the limit undergo further
gravitational collapse, evolving into a different type of stellar remnant, such as a neutron star or black hole.
Those with masses under the limit remain stable as white dwarfs. The currently accepted value of the limit is
about 1.44 M ( 2.864 × 10 to the power 30 kg).