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Asked by madiya to Tom, Tim, Sarah, Derek, Dalya on 15 Jun 2011. This question was also asked by aishaa.
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Tom Crick answered on 14 Jun 2011:
Hi madiya, great question. It depends on what you mean by “particles”, so I will assume you mean atoms!
This website gives a very good answer of how many atoms: approx. 7×10^27. That is, 7 followed by 27 zeros: 7,000,000,000,000,000,000,000,000,000!
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Sarah Thomas answered on 15 Jun 2011:
Since Tom has already given the number of atoms, I will give you some other facts!
There are 50 – 75 000,000,000,000 cells in the human body.
The number of bacteria that live in and on your body is 10 times greater than the total number of cells in your body!
You have over 100,000 hairs on your head!
The average human skeleton contains 206 bones which happens to be the same as a giraffe!
Your body is about 60% water – your brain is 75% water which is why when you get dehydrated you get a headache!
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Dalya Soond answered on 15 Jun 2011:
Hey Madiya, question for YOU? Which of the numbers these guys gave do you think would be different between a 6 foot tall man that lives in France and a 5 foot tall teenage girl in England? And which info in my question is needed to answer the question?
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Derek McKay-Bukowski answered on 15 Jun 2011:
Good answer by Tom and yes, I agree it depends on what you mean by particle. Tom assumed atoms. But what if you meant fundamental particles?
Now atoms are made of protons, neutrons and electrons. And protons and neutrons themselves are made of quarks (three each).
Using the web site that Tom found, there’s 2.3×10^28 protons, 1.8×10^28 neutrons and 2.3×10^28 electrons.
Which would make 1.23×10^29 quarks and 2.3×10^28 electrons.
Comments
aiishii commented on :
Wow i am very SUPRISED !!