Showing titles in Physics

Did you see a flagpole today? Then you’ve seen a pulley at work! These simple machines are all around. Take a listen and discover 13 different uses for pulleys.

Did you put the cap on the toothpaste tube today? Then you’ve used a screw! These simple machines are all around. Take a listen and discover 13 different ways we use screws.

Did you use a fork today? Then you’ve used a lever! These simple machines are all around. Take a listen and discover 13 different ways we use levers.

Did you ride a bike today? Then you’ve used wheels and axles! These simple machines are all around. Take a listen and discover 13 different ways we use wheels and axles.

Did you use a scissors today? Then you’ve used wedges! These simple machines are all around. Take a listen and discover 13 different ways we use wedges.

Nina and her brother Wild are learners-at-large. They don't sit still for school -- they learn kinetically, by doing STEM experiments. But can science help when a precious pup plops into the backyard pool? PJ Time is Learning Time. Ditch the workbooks... and love science once again. Grab your littles, a pair of comfy pjs, a cup of decaf (who are we kidding? go big) and start learning through daily adventures. Finally, a picture book as pretty as a magazine that parents can enjoy reading more than once!

Beim Hören wirst Du verstehen, warum Sterne leuchten und was das mit tanzenden Teilchen, Luftdruck und Wärme zu tun hat. Mit dem Kohlenstoff-Kreislauf des Lebens, CO2 und Pflanzen. Mit der Entstehung des Universums, der Milchstraße und unserer Welt. Du wirst verstehen: Bei dieser kleinen Frage geht es um Leben und Tod. Und um Bausteine, die in Sternen entstehen. Bausteine, aus denen alles auf dieser Erde gebaut ist. Auch wir. Denn wir sind aus Sternenstaub. Wir schauen nicht nur in den Sternenhimmel. Wir sind ein Teil davon.

From a young age, Stephen Hawking had a strong sense of wonder and was full of questions about the world around him and the stars above. He would spend his whole life trying to figure out how the universe worked, including discovering truths about black holes and energy. And when he was diagnosed with a rare disease called ALS that destroys the nerve cells in the body, he would find his own mental energy to carry on with his studies even after his limbs and vocal chords stopped working. He became one of history's most influential scientists.