SARLDO 0 #1 March 18, 2008 Yesterday, the wife and I had a discussion about chicken eggs (no, were not weird, she is a 3rd grade teacher and they have some in an incubator). From the discussion, there is somthing I can't come to understand (if it's true). She claims that as the chicken develops inside the shell, the egg as a whole gains weight. I understand the changes taking place inside the shell but can not understand how, without adding anything to the inside of the protective shell, it gains weight. I argue that the overall weight remains constant. I lost a lot of sleep last night on this and could use some insight. Thoughts?"Always do right. This will gratify some people and astonish the rest" ~Samuel Clemens MB#4300 Dudeist Skydiver #68 Quote Share this post Link to post Share on other sites
longtall 0 #2 March 18, 2008 Heavy , thought..................................J..........." 90 right, five miles then cut."---Pukin Buzzards Quote Share this post Link to post Share on other sites
SARLDO 0 #3 March 18, 2008 lol..."Always do right. This will gratify some people and astonish the rest" ~Samuel Clemens MB#4300 Dudeist Skydiver #68 Quote Share this post Link to post Share on other sites
Icon134 0 #4 March 18, 2008 I'm not sure the reason but although there may not be actual mass added there is energy applied (in the form of the incubator adding heat) I also imagine the egg is not impermeable (so if oxygen or some other gas is needed for a chemical reaction then it is probably able to pass through the egg shell.) But that's just my gut feeling on the issue. ScottLivin' on the Edge... sleeping with my rigger's wife... Quote Share this post Link to post Share on other sites
Squeak 17 #5 March 18, 2008 QuoteI'm not sure the reason but although there may not be actual mass added there is energy applied (in the form of the incubator adding heat) I also imagine the egg is not impermeable (so if oxygen or some other gas is needed for a chemical reaction then it is probably able to pass through the egg shell.) But that's just my gut feeling on the issue. Scott Egg shells are permeable, and increase in permeablitly as the incubate, the membrane on the inside is also selectively permeable. and gases do pass back and forth. a certain amount of humidity is also needed.You are not now, nor will you ever be, good enough to not die in this sport (Sparky) My Life ROCKS! How's yours doing? Quote Share this post Link to post Share on other sites
SARLDO 0 #6 March 18, 2008 I guess I didn't look at from this perspective, thinking the shell was impermeable. Sort of makes sense now. I can sleep soundly tonight. Thanks!"Always do right. This will gratify some people and astonish the rest" ~Samuel Clemens MB#4300 Dudeist Skydiver #68 Quote Share this post Link to post Share on other sites
Icon134 0 #7 March 18, 2008 Cool... that's kind of what I figured.Livin' on the Edge... sleeping with my rigger's wife... Quote Share this post Link to post Share on other sites
kwarthen 0 #8 March 19, 2008 Hope you slept well. Here's to sleeping better tonight... An egg will lose roughly 15% weight throughout incubation. More than 99% of lost weight is water. Basically simple diffusion across the membranes and out through pores in the shell. Oxygen enters. Diffusion rate is directly related to environmental humidity in the incubator. High humidity retards water loss, lower humidity enhances it. Wrong humidity equals dead chick in egg. You may want to ponder this one tomorrow night. As the little chick is growing in the shell why doesn't it drown in it's own urine? You may not be weird but I'm not sure I can say the same. On the other hand, this is dropzone. Quote Share this post Link to post Share on other sites
SpeedRacer 1 #9 March 19, 2008 Quote You may want to ponder this one tomorrow night. As the little chick is growing in the shell why doesn't it drown in it's own urine? Because birds don't produce urine. Speed Racer -------------------------------------------------- Quote Share this post Link to post Share on other sites
SARLDO 0 #10 March 19, 2008 So they don't GAIN weight, they LOSE it? I'm not sure I want to reopen this conversation with my wife. I'll let her think she was right. It's what I usually do anyway I didn't sleep last night either. Too busy thinking about a way to stop cars (that don't already have Onstar) remotely and safely (to end police chases). The weirdness continues... "Always do right. This will gratify some people and astonish the rest" ~Samuel Clemens MB#4300 Dudeist Skydiver #68 Quote Share this post Link to post Share on other sites
Squeak 17 #11 March 19, 2008 Quote Hope you slept well. Here's to sleeping better tonight... An egg will lose roughly 15% weight throughout incubation. More than 99% of lost weight is water. Basically simple diffusion across the membranes and out through pores in the shell. Oxygen enters. Diffusion rate is directly related to environmental humidity in the incubator. High humidity retards water loss, lower humidity enhances it. Wrong humidity equals dead chick in egg. You may want to ponder this one tomorrow night. As the little chick is growing in the shell why doesn't it drown in it's own urine? You may not be weird but I'm not sure I can say the same. On the other hand, this is dropzone. Did you get that from an Adele Penguin abstractSALAD - O....Ask your wife how she measured the weight, see if she used scales of if they checked "sink" rate in water. Whilst most eggs i know of lose weight, however their SG (specfic gravity) can inscrease quite a bit.You are not now, nor will you ever be, good enough to not die in this sport (Sparky) My Life ROCKS! How's yours doing? Quote Share this post Link to post Share on other sites
