- Bob Doyle - Astronomy
Unknown to us, we host a vast multitude
We have about 10 trillion human cells in our bodies. But on our skin, in our mouth, throat, esophagus, stomach, intestines and colon are about 90 trillion bacterial cells.
Can we count on our sun to be reliable?
One constant in our lives is the radiation from our sun. Of course, how much sunlight we receive from our star depends on the weather, subject to changes each day. But above our atmosphere’s weather layer, the sun’s outpouring of radiation hardly varies.
What are the odds of this happening to you?
I recently purchased an intriguing book with the title of “What Are the Odds?” by Tim Glynne-Johns.
New book chronicles notable early aircraft
I’m writing this column at the time when three planets are close together low in the western dusk but cloudy weather is preventing me and others in the Cumberland area from seeing this unusual formation.
Here’s how physics applies to our lives
Every summer, I teach two physics classes that I find enjoyable. The first course is about motion, forces, rotation, orbits, fluids and heat. The second course covers waves, light, electricity and magnetism.
Since I’ve been doing this for two decades, I’ve tried many teaching ideas. I hope that by the end of each course, my students will understand how physics principles apply to their own lives.
Life rules reveal just ‘Why Size Matters’
This column will comment on some unusual trends of living organisms revealed in “Why Size Matters,” by biologist John T. Bonner.
Here are curious facts about Earth’s moon
Several weeks ago, we had our annual STEM Faire at Frostburg State University. STEM stands for Science Technology Engineering and Mathematics.
Guide to the universe has much to offer
Early this year, I purchased the new Smithsonian atlas, “Universe — the Definite Visual Guide” published by Dorling-Kindersley.
Sir Isaac Newton was a ‘philosopher by fire’
My last two columns have reviewed Isaac Newton’s upbringing, his great inventiveness (both practical and theoretical) and his reluctance to share his discoveries (fearing lesser minds would have the gall to challenge him.)
Sir Isaac Newton a troubled genius
Last week’s column reviewed the youth of Isaac Newton, the founder of mechanics (force and motion) still used today in the design of most mechanical devices.
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- Unknown to us, we host a vast multitude