Home» Physics (Page 3)

Cell Phones and More: Back to Biology

Posted by Michael Gold - November 3, 2018 - Biology, Child Development, Exercise, Health & Nutrition, Physics, Science

In the Wise Traditions podcast #158, “Tech Side Effects,” Brian Hoyer and Hilda Labrada Gore discuss the affects of electromagnetic radiation on our health, and in so doing implicitly say and show how it is important to know physics, to know biology, and to put physics in context of biology, human life, and the requirements […]

A Basic Idea of Animal Movement

Posted by Michael Gold - August 30, 2018 - Animals, Biology, Child Development, Exercise, Health & Nutrition, Physics, Science

“The skeletal system translates the force of muscle contraction into movement as the body interacts with its environment.” –Mark Rippetoe, Starting Strength (p. 10, 3rd ed.)

Lightning and Reasoning

Posted by Michael Gold - July 20, 2018 - Education, Homeschooling, Logic, Physics, Science

Watch closely. What do you observe? Find details, colors, patterns, shapes. Compare with other videos of lightning striking. Put things in context of science and your own experience. Here are screen captures from the video.

Physics and Falling

Posted by Michael Gold - May 9, 2018 - Education, Exercise, Health & Nutrition, Homeschooling, Logic, Physics

I jump into things here — both literally and figuratively — because I made this for some people I tutor, and we had already partially reasoned out and used the formulas discussed.

Forces and Climbing

Posted by Michael Gold - December 29, 2017 - Education, Exercise, Health & Nutrition, Homeschooling, Logic, Mathematics, Physics

Measuring the Angle of the Sun Above the Horizon

Posted by Michael Gold - December 27, 2017 - Astronomy, Education, Homeschooling, Mathematics, Physics, Science

Sleep

Posted by Michael Gold - December 19, 2017 - Biology, Child Development, Culture, Education, Exercise, Health & Nutrition, Homeschooling, Logic, Parenting, Physics, Science

In “This expert has a dire warning about not getting enough sleep” (Market Watch, Nov 29, 2017, 10:42 a.m. ET), Emma Court writes: Sleep expert Matthew Walker is not a fan of the expression “you can sleep when you’re dead.” In fact, he calls it “mortally unwise advice.” “Sleep is Mother Nature’s best effort yet […]

How Do Birds Get Vitamin D3?

Posted by Michael Gold - December 18, 2017 - Animals, Biology, Physics, Science

In the book Beaks, Bones, and Bird Songs by Roger Lederer, Lederer says that, when pruning, birds put a chemical on their feathers that becomes Vitamin D. Very little sunlight reaches their skin through their feathers, so they need another mechanism to gain Vitamin D. They put a chemical on their feathers while pruning; the […]

Vitamin D and Epigenetics?

Posted by Michael Gold - December 16, 2017 - Biology, Chemistry, Exercise, Health & Nutrition, Physics, Science

Fascinating. In “Vitamin D Metabolism, Mechanism of Action, and Clinical Applications,” Daniel D. Bikle writes: Vitamin D3 is made in the skin from 7-dehydrocholesterol under the influence of UV light. Vitamin D2 (ergocalciferol) is derived from the plant sterol ergosterol.…With the finding of the vitamin D receptor (VDR) in nearly every tissue and the more […]

The Amazing Vitamin D

Posted by Michael Gold - December 15, 2017 - Animals, Biology, Chemistry, Exercise, Health & Nutrition, Physics

Interesting. We learn more and more about Vitamin D as we conceptualize the things of and causes in reality. In “Sunlight and Vitamin D,” the folks at Uvguide.co.uk write: Calcediol [25-hydroxy-vitamin D3] is then circulated in the bloodstream all around the body. In the kidneys, some is converted to the active hormone calcetriol. This plays […]

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