self made digital microscope by Yoshinok

Have you ever wonder how does a string of hair look under 40x magnification?? or how does your own finger prints look......... I myself have way too many things i want to have a closer look at but am too cheap to buy a microscope.  I recently came across this video and i think it is soooooo cool........ So i decided to repost it here and hope you guys will have fun making your own microscope too.    

here is the link:  (no drum rolls are required this time :)  

http://www.instructables.com/id/10-Smartphone-to-digital-microscope-conversion/

Leave a comment below to tell me what will be the first thing you look at using your home made microscope.  <3

Mushie

male's loyalty / faithfulness to his partner is related to his testes size??

I know talking about testes size is weird ..... (I promise you i won't get mad  if you decide to stop reading now :)  but if you continue reading....i think you will find this interesting.


How faithful one is to his partner depends on MANY factors and I do not know all of them ( I actually hardly know any).   I am going to discuss one factor today :)  This factor might not apply to everyone, every time, but it is definitely an interesting one to think about.

One's testes size....(i  know this is kind of private... Fine, i admit this is super private)  is related to how faithful he is to his partner?? HOWWWWW ( you might ask....don't rush me, i will tell you in a bit....).  

In order to relate one's testes size to his faithfulness, i am going to tell you a little study i learned in my third year class AGAIN.   Some researchers measured testes size of gorillas, chimpanzees and human.  The researchers found proportionally, gorillas have the smallest testes while chimpanzees have the biggest testes.  One of the suggested reason for gorillas having the smallest testes relative to their bodies size is gorillas are very monogamous.  The male gorilla can be quite certain his partner will not mate with other males.   Animals in the wild do not waste energy on unnecessary things. Making sperm is energy costly.  Knowing the female partner will not have other males gorillas' babies, the male gorilla then can spend more of his energy in body building to protect his family, forage for food and build a safe living environment instead of making sperms. Since sperms are produced and stored in the testes, and only one sperm is required to fertilize an egg, male gorillas don't need to make a lot of sperms to produce the next generation.   Hence they do not need big testes to make and store a lot of sperms.    

On the other hand, Bonobo, a species of chimpanzee is famous for its high level of sexual activities. I didn't make this up, i have proof and here it is ( http://en.wikipedia.org/wiki/Bonobo).  Since bonobo are polygamous (meaning they have many partners ), whichever males' sperm reaches the female egg first, then that male can successfully reproduce. (Can i tell you something interesting?  Well i am going to tell you anyways.  I have heard that if one bonobo gives another bonobo a banana, the receiving banana banobo will have sex with the banana giving bonobo to show its appreciation.   Or if one bonobo scratches another bonobo's back, they will again have sex to show its appreciation)  Being in a polygamous society means there is a strong sperm competition.  The more sperm a male can make, the more female he can attempt to fertilize.   Bigger testes can mean more sperms can be produced and stored.  This suggests male bonobos with bigger testes can fertilize more females and reproduce more.  

Since human male testes size falls in between gorilla and chimpanzee, does that mean human is partly polygamous and partly monogamous by nature?? Can I ask a question then ??  If that is true, if one has smaller testes, does that mean his is more faithful to his partner by nature?

Anyways....i dont think there is a cause and affect relationship between male's loyalty to his partner  and  his testes size.  There might be a tiny correlation though, non?? ( what do you think?)

Feel free to leave a comment down below!! <3

do babies look like their dads more??

Put your hands up if you have said:  "the baby looks like dad" to parents of a new born baby.  I have both of my hands up in the air and I am attempting to put my legs up as well ( don't laugh) , because i realized i have said this almost every time i see a new baby.  

You might be wondering now that babies can look like their mothers too.....why are you not talking about it.  The reason is (....wait... wait........drum rolls please...... ) an experiment i learned in my third year stats class. 

(Yon don't have to read the whole paragraph if you dont want,  but you do want to read the conclusion at the end.  I promise you, it will be interesting to read).  I am going to explain the experiments briefly here. (Don't fall asleep yet!!)   This experiments used many replicates of:  one baby picture and three different male adult pictures with one of them being the biological father.  The researches then asked random people to pick out the biological father out of the three males after showing them the baby's picture.  If people were selecting randomly, then the chance of each male being picked as the biological father is going be 33%  (100/3 =33).  But the percentage of people getting the answer right was significantly higher than 33.  The researches then did another the similar experiment.  This time, they used replicates of :  one baby picture and three female pictures with one of them being the biological mother.    But this times, when the researches asked people to pick out the mother.  The percentages of people getting the right answer was not significantly higher than the percentages of random guessing.   From these two tests, they concluded that babies do resemble their father and not their mother.  

Why would that be, you might ask...... (drum rolls again).....

During pregnancy, babies are inside their mother.  So mom knows the baby is hers.  But the dad can't be as 100% sure whether the baby is his or not.  Let me put this in another way...the mom knows she has a baby and that baby is hers cause the baby is inside her, but the dad can not be sure if  he is the dad cause the mom could be carrying the baby from another male.  Human is supposed to be faithful to their significant other so we assume the dad is usually the dad.  But many birds or mammals (animal)  in the wild are not monogamous meaning they have many different partners.  So the males sometimes can not be sure whether they are the biological father or not.  In a survival of the fittest world, animals won't waste their energy to raise young which are not theirs.  Hence the more the babies look like their dads, the higher the chance the dads will think the babies are theirs and hence be willing to spend energy to raise the offsprings.  I know this sounds crazy, but if the dad doesn't think the baby is his, why would he raise the baby.  Raising a baby is HARD....( go ask your parents).    So from an evolution point of view.......dads are more willing to raise babies which resemble them more cause they have a higher chance of being their biological children.

I have a question now then... if you look like your dad more.. does that mean you have evolved for longer compared to someone who doesn't look like their dad as much??????

Time to look at the mirror and ask yourself if you look like your dad or not :)

feel free to share comments or any thoughts  you have after reading this!!! <3