APlusPhysics Alumni

First of all, I was extremely happy when I found this topic because otherwise I would've creeped on the current students forums. So anyway, here I am, a big shot college student (hah) doing my college thing that may or may not include floundering in calc III I mean what. And I'm done with physics courses. AP physics c is all that I needed. So I'm done, right? Nope Depending on your point of view, it's either unfortunate or fortunate that I still use physics. All. The. Time. BME lab? Physics. So much physics. I have been named the resident physics person of my group by this point. Turns out taking two years of it in high school makes it stick more than you think. …

When visible light, X rays, gamma rays, or other forms of electromagnetic radiation are shined on certain kinds of matter, electrons are ejected. That phenomenon is known as the photoelectric effect. The photoelectric effect was discovered by German physicist Heinrich Hertz(1857–1894) in 1887. You can imagine the effect as follows: Suppose that a metal plate is attached by two wires to a galvanometer. (A galvanometer is an instrument for measuring the flow of electric current.) If light of the correct color is shined on the metal plate, the galvanometer may register a current. That reading indicates that electrons have been ejected from the metal plate. Those electrons …

I was just looking around on the usual places and I found something that some of your students might be interested in. It is using ultrasonic standing waves to levitate objects.

This is a forum for past (and forever) APlusPhysics users to reconnect, provide updates on what wonderful things they're doing with their lives, etc.

Hey bossman, I have been pondering some questions about this universe we live in and a few of them have stumped me. for instance: What is radiation that goes beyond the EM spectrum? If the light that is reflected into our eyes is from the past wouldn't that make finding intelligent life(regardless of whether or not you agree its out there) nearly impossible? And if we are currently living in a time after the big bang had cooled down for planets and stars to form wont the universe continue to cool down to an unlivable universal "ice age" that won't cease until another singularity occurs? If you can answer any of these for me that'd be greaaattt. If not whatever,…

I'm in it. Professors are awesome. I was reminded of Aplusphysics and a certain professor when I caught up to the Big Bang Theory episodes a few days ago. Honors Physics seems to be starting slow but I hear tales that it will kick my butt. More to follow.