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As part of the let-down reflex related to milk production, the uterus contracts in response to the oxytocin released, so breastfeeding while pregnant may put high-risk mothers in danger of miscarriages, which may be due to elevations in prolactin. If the woman has a history of preterm labor...
When a camera flash goes off, the pupils of your subject's eyes don't have time to constrict to reduce the amount of light entering their eyes. Therefore, a large burst of light reaches the retina, reflects back, and is captured on film. The red color is due to the rich blood supply...
Léonor Fresnel, a relative of Augustin Jean Fresnel, also made significant contributions to the wave theory of light. It seems that a passion for optics ran in the family! Related HowStuffWorks Articles How Cameras Work By:Tom Harris A fully manual single-lens-reflex camera. ...
ones with the time and money.) Likewise, if you're seeking a quiet, uneventful cruise, you might prefer to avoid a ship booked with hundreds of teens celebrating high school graduation. Talk to your cruise consultant, who should be able to find out if there are large groups on your ...
How To Reduce Bloating And Get Instant Relief What To Know About Selena Gomez's SIBO 'My Rare Genetic Disorder Was Dismissed As IBS' This Common Nut Could Reduce Inflammation Here's Where Parkinson's Starts, Per New Study How to Stay Safe During The Deli Meat Recall ...
Babies don't understand directions, so you can't just tell them not to bite so hard. Some parents find it makes sense to remove the child's teeth -- once the child's adult teeth grow in, he'll be old enough to understand when not to bite. But this removal of teeth can make ...
It is big, bright, and easy to find. Because the lighting of the moon changes everyday with the changing moon phases, you get a different view of its features everyday. The moon offers much to see and you don't need a huge telescope to reveal its features. With binoculars or a ...
Before digital cameras, you needed instant film to get instant pictures. With instant-film photography, you can watch the image slowly come together in a matter of minutes. While it seems like magic, the process relies on elements of science. Find ou