scale

I've been wondering this for a while. Perhaps someone with the relevant education can help me with it. Ultimately, perhaps it would be a good way to discuss this with the CD theorists. Suppose we had an imaginary 1:100 scale model of the twin towers (41cm high) to demonstrate how the collapse...

I've made up a (not totally original) scale for use in my Science and Nonsense class. I call it the 10/10 scale, pronounced "ten, ten". On the 10/10 scale, -10 means definitely not true -5 means probably not true 0 means hard to tell +5 means probably true +10 means definitely...

In my day the breakdown for grades was something like this: 3.3 - 4.0 = A 3.2 - 2.5 = B 2.4 - 1.7 = C 1.6 - 1.0 = D .9 - = F I vaguely recall it varying some (eg some places 3.0 was the A cutoff etc) but can anyone confirm/deny a "norm" and/or how to translate a numeric grade (eg 90%...

Does anyone know if the Richter scale estimates from the past correspond well to the present? In other words, if an earthquake from 1932 is described as being 7.5 on the Richter scale, what are the chances it would now be described roughly the same? The Economist had an article on earthquakes...

I'm quite fascinated by ciliated microorganisms. They are like little jet fighters underwater. Question: Can cilia be scaled up and still work like they do at micrometer scales? For instance, a robot the size of a soft ball that is used to explore tight spaces underwater?