UCSB Science Line - UC Santa Barbara
The domestic hen's egg has between 7,000-17,000 pores. Thickness of eggshells can vary depending on the species, the size of the egg, the age and health of the mother, what time of the year the egg is laid, what nutrients were available and …
UCSB Science Line
If you want to do good science, you need to get a few fresh ostrich eggs and make your measurements on them. Then you can see how much the fresh ostrich eggs vary in the different measurements you are making.
UCSB Science Line - UC Santa Barbara
We most commonly see chicken eggs, which have a thickness of less than a millimeter. Ostrich shells, on the other hand, and significantly thicker and stronger, since they are also larger. They are a couple millimeters thick, like two pennies. Some eggs, especially in fish, have no real shell.
UCSB Science Line - UC Santa Barbara
Egg shells are made of a biopolymer of protein filled in with a mineral substrate (I want to say calcium carbonate, but it could be phosphate). In order to dissolve the shell, you need something that will dissolve the mineral, which can happen in water or, especially, in any kind of acid.
UCSB Science Line - UC Santa Barbara
The thickness of an eggshell depends on what animal's egg you are talking about. The usual chicken eggs we eat at home is about 0.3mm thick. Most animals who lay eggs have an outer protective layer but not a hard "shell".
UCSB Science Line
Is it possible that an ostrich egg shell has Barium in it? I understand from the article I read that ostriches eat everything and some come from Northern Africa including Morocco, which is rich in minerals. I also understand that the water the ostriches drink there can contain barium.
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Comparative Analysis Hight Diameter Weight and Density of unmounted ostrich eggs in collections Nr/Date Height Diameter Weight Thickness Diam/Height Height/Weight Diam/Weight Vol. Outside Vol Inside Diff. VO-VI TIME Weight/Diff VO-VI cm cm Gramm mm Density 1 NEW 14.00 12.10 225.00 1.91 0.86 0.06 0.05 8585.93 4.00 3.00
UCSB Science Line - UC Santa Barbara
The cells in this gland secrete the actual shell material, which covers the egg. In birds, the shell usually hardens ("calcifies") while in reptiles (like turtles and snakes), the "shell" is more leathery. After the shell material coats the egg, the egg passes through the rest of …
UCSB Science Line - UC Santa Barbara
I read the article on the question "How thick is an eggshell" Amongst others... the thickness of the ostrich egg depends on the age. How much weight does an ostrich egg lose...in 500 years? Is the loss of 50% of its original weight possible?
UCSB Science Line - UC Santa Barbara
In oogenesis, or the female form of gametogenesis, mature egg cells are produced that may be later fertilized. Mammals, including humans, undergo mitosis to form the diploid primary oocyte. The oocyte divides into a haploid secondary oocyte and a polar body by meiosis I .