Friday, September 17, 2021
Wednesday, September 15, 2021
Friday, September 10, 2021
What I like about this book: The poetic language on each page just draws you into the sense of exploration. In the back matter, Miranda explains the science behind each poem. She also provides an extended return address for anyone who would mail a letter to another world (in this or any other universe), and tells how long it would take for that letter to be delivered at the speed of light. Though, she warns, Space Mail does not guarantee delivery.
Wednesday, September 8, 2021
Last week I noticed a splash of red on my lawn (well, the mix of plantain and clovers and grass that pass for a lawn). It was ... gasp! a RED leaf!
Wait! It's too early for fall to come! And then I looked up at the trees. This was not the only leaf shedding its summer greens. The next morning a flock of geese honked loudly as they flew overhead, further punctuating the certain demise of summer.
Over the next two weeks, take a moment to notice what changes are happening in nature around you as Earth tilts towards the autumnal equinox.
- have the daytime and night temperatures changed?
- what do you notice about the bird songs you're hearing?
- what color are the flowers along roadsides and edges of parks?
- does the air smell different?
- check for a new constellation in the sky.
- do you see flocks of birds or butterflies heading south?
Friday, September 3, 2021
Wednesday, September 1, 2021
Yesterday morning I was out in the garden watching bees, and I happened to notice water droplets clinging to the hairy lupine leaves. When I looked closer, I could see how the droplet in the center worked as a magnifier. Got me thinking about times when I've dripped water onto a page of the New Yorker, and how the print was magnified.
Water droplets make fine magnifiers - and if you took a trip in the Way-Back machine you would find some scientists using water droplets as microscopes. So why not make your own water-droplet magnifier? All you need is water and some plastic. You can use clear plastic from an old soda bottle or even hard plastic that was used in packaging for batteries or something.
Here's some fun experiments from Scientific American.
And here's a video, with an idea of how to use a water droplet to turn your cell phone camera into a macro lens.