Working with Photodiodes and eggs

[Charlie_Brown]

working of photodiodes

Hi!
I would like to know if the infrared light of a led would pass through CaCO3. I would like to "see" the inside of an egg and CaCO3 is the basic compound. I am trying to make a special pulsometer for eggs(with a little embryo inside). Do you think it is able using infrared light?
Thanks

 

[Tohu]

working with photodiodes

Hi,
i think will be better if you use the ultrasonic device.

 

[Charlie_Brown]

and how?i tried also with ultrasounds, but I can´t see any change at the signal when it pass thought the egg.Are you sure?ultrasounds are used in distance of about 2-3meters!

 

[artem]

you can easely test ir absorbtion - in dark room , put radiator (can be more than one ir led) behind the egg and check passed ir on other side by camera (mainly those are sensitive to ir ).

 

[Tohu]

Hi,
the videosone use ultrasound, but you may be right, the eggs carapace is hard, and may be you can't use the ulstrasound ......in medicine is use gama ray and electromagnetic wave, EMR scaner, but this is a more complex solution.

 

[Charlie_Brown]

ok,i am going to try with ultrasound, now I am sure that ir pass throught the egg but i can not see any change,so let see if i am able to do it with ultrasound;do you know some emitter with 555?Tahnk you