Candling
Candling
Method of observing the growth of an embryo inside an egg, using a bright light source
Candling is a method used in embryology to study the growth and development of an embryo inside an egg. The method uses a bright light source behind the egg to show details through the shell, and is so called because the original sources of light used were candles.[citation needed]
This article relies largely or entirely on a single source. (June 2014) |
The technique of using light to examine eggs is used in the egg industry to assess the quality of edible eggs.[1]
- A non-fertile chicken egg, with only a round yolk sac
- A non-viable fertilized chicken egg, with a thin blood ring encircling the yolk
- A fertilized chicken egg, 11 days old, with blood vessels surrounding the yolk