Yeah, now that's what I'm talkin bout.
Ok, more blades are less efficient. When I look at turbofan jet engines, the bypass fan, compressor stages, and turbine stages look like the above (well a little more sophisticated than "green acres"). Should they be reduced to 3 blades as well?
Hi - I know someone must have thought of this already, so maybe you can help me understand.
When I look at some of these modern wind turbines, the blades seem massively long. I see this lumbering set of blades moving slowly and I imagine that the bulk of the wind does not even touch the...
If they could just use the current battery chemistry and just get the cost down to a reasonable price, I wouldn't mind spending a reasonable amount every 5 (or even 2) years to recycle the battery.
They could really get economies of scale of they standardized on a battery that is independent...
Ah good point.
I'm hoping that if cooling spaces or channels are needed, they would be incorporated into the mold of the case. I emphasize "mold" meaning that it is a one-shot process and it does not require manual labour to drill holes or inert parts etc.
Not quite. The way I understand AAA and D cells...they are both single 1.5V cells. The larger one just has more capacity. Hey, if they can make a EV motor that will run on a single cell, then it would work. But I suspect you are going to need both higher voltage and capacity, hence you would...
I notice that electric vehicle batteries (such as the one in the Tesla) are made of a bahzillion little batteries. I also notice that electric vehicle batteries seem to be absurdly expensive.
A small battery is made of a case, some metals and chemicals.
Can they not scale up this process...
Thanks. In the FAQ I like the part about the "collective behaviour" of the atoms interacting with the photons (makes sense and explains a few things).
BTW - I know that scientific proof doesn't come from a popularity contest, but...
It is curious that a Google search doesn't turn up too...
Hi
I have done a lot of digging on the net for some answers about light interaction with solids and can't find some answers to some questions.
1. How does light pass STRAIGHT through a transparent object?
I see a lot of references say that the electrons don't have available energy...
I hate to generalize, but I have found that good marks on math tests may not necessarily indicate a good overall intelligence, or the ability to use logic and critical thinking.
I have known a several people that know what was taught to them in math class, and can crunch math problems like a...
Here's a link with some info about the British Scientist who made the URB (Unridable Bicycle).
http://www.geocities.com/CollegePark/Campus/1832/pyfair.html
(hey, it's on the internet so it has too be true, lol).
Another way to demonstrate that gyroscopic forces have virtually no effect is...
I had interpreted your original question to mean a bike that has a rider. I see you are asking about a riderless bike.
The previous poster is correct that without a rider, the wheel caster becomes the dominant stability factor by causing the front wheel to automatically steer so that the...
I know I'll start a controversy, but here goes.
From what I can gather, gyroscopic forces play no (insignificantly small) role in keeping a bike up/stable.
This is demonstrated in 2 examples.
1. A person can ride a ski-bob (has skis instead of wheels) as well as a bike.
2. I recall a...