Recent content by Herman Trivilino

Yes. Each corner post does that.

I thought that load was carried by the aquarium itself.

It seems to me that the horizontal members are not load-bearing so the concern over their strength is unwarranted. Virtually all the load is carried by the vertical members. Is it not?

E2 and E3 are different events. Of course the clock readings are different. Would you expect leaving for home and arriving at an event to occur at the same clock reading?

In general I find Brian Cox unimpressive and boring.

That can never happen. You have misunderstood something. That can never happen, either. A reading on a clock, like any measurement, is a relativistic invariant. Meaning all observers agree on its value, regardless of their speed relative to each other. I think you are talking about the...

Synchronization alone, perhaps not. I had the advantage of teaching in a system where students had the same classmates and instructor for both the lab and the lecture. This allowed for not only synchronization, but full coordination of all learning activities.

It seems to me this would only apply after a 5-year leave of absence.

It's a fact. And I can be more specific. There has been a progressive decline in student performance during the last 4-5 decades. The teachers we hire are now products of the decayed educational system in US.

In my opinion a novice instructor needs to grade on a curve and an experienced instructor can and should grade on an absolute scale. How the student feels about it is not relevant.

My brother "helped" me by telling me that that the weight of the car didn't matter because all bodies fall the same regardless of their weight. I lost miserably.

Children are raised in a cuddle culture. Never told they are wrong. We don't want them to experience shame or disappointment, yet we are dismayed that they are unable to learn.

I start with a chart showing the values of ##v## and ##\gamma## for the motions of different objects. Starting with maybe a race car, then a bullet, and so on up to the speed of Earth orbiting the sun, showing that what we think of as everyday speeds have a value of ##\gamma \approx 1##. Then I...

Well, we create models. That's physics. Describe and predict the way Nature behaves using models. No, because we have additional observations and evidence other than just the shadow. Yup. Like that! The model of light as a wave gained traction with the work of Maxwell and others. Later...

It's not moving only at the instant it makes contact.