Higher energy photons are distinct from lower energy photons in having a shorter wavelength. They both travel at (about) the same speed. Presumably in a true vacum they would travel at exactly the same speed.

Thus blue light is more energetic than red light, and has a shorter wave length. You measure the energy of the photons by absorbing a certain number and measuring the change in velocity or temperature of the thing that absorbed them. (Usually this is done by some sort of photocell arrangement were the absorbtion translates into electron volts, and that's what you actually measure. I believe that this has been done down to the single photon level, but I'm not sure.)

Correction:
This is how we know the Sun is^W made^W of^W contains some Helium. (And what proportion.)

We not only got rain, but hail. It worked out fine.

Brought to you by the people who SWEAR that if corporations are made to actually pay their taxes they'll flee to Somalia.

Clearly that didn't happen.

Let's turn it around, if they lower wages or cut pensions, we just increase their taxes to fund the expansion of the social safety net.

Here's your definition.
"Toilet to tap" programs are those in which the treated sewage is directly used as the input into the water treatment plant.
The phrase "toilet to tap" is pejorative; the intent is to make people opposed to the process of recycling water directly from the sewage treatment plants. The phrase is also used by journalists hoping to attract attention to their article.

Less disparaging terms are those like "recycled water", "water re-use", "water reclamation" and so on.

Some people consider discharging the treated water upstream to the cities water intake to be "toilet to tap", or also the process where the treated water is put into holding ponds that also serve as water intake. Those are called the same terms with the word "indirect" added, such as "indirect recycled water".

No one calls the case of upstream cities sewage (treated or untreated) being dumped into a river that downstream cities use for their water intake to be "toilet to tap". That's just traditional practice, and is called "pollution" in the case of untreated sewage.

Here is a journal article that discusses it in more detail.
http://journal.sjdm.org/14/141...

He didn't give hinself shock treatment to erase his memory of the time he worked with us and he failed to deny that he existed during the years of 2011 and 2012. Even though he didn't steal our IP (or we would have sued for that), we want to sue anyway because we fumbled the future and he didn't!

You can only TAKE a selfie of yourself, but you can easily POST someone else's selfie if you understand the technology.

Nicely said. I hope you don't mind if I hold on to that one for future use.

Honestly, I don't see a lot of age difference in politician's understanding of tech. Young or old, f they're in politics, they typically don't understand it at all.

Why not use silicon dioxide? IIUC that's what they used to use, and it's a cheap industrial chemical. AND it's heavier than water.

Money is not equivalent to free speech, no matter how you twist things. I do not accept your arguments.

It is worth noting that one of the arguments which I read to be against the "free press" is the statement "The power of the press belongs to the man who owns one.". I don't fee this is sufficient grounds to be against freedom of the press, but it certainly highlights the limitations on its desirability. It's a way that only empowers the wealthy, as opposed to free speech which is available to the eloquent, whether rich or poor. And that highlights a limitation on the desirability of free speech. But the constitution made the best of things, but requiring *both* free speech and the free press. It would be reasonable to equate money with the free press, but not with free speech.

If there is any turbulence or convection in the water, there is nothing to say that they will ever sort.

According to TFA, they are more expensive than the things they replace, so the law probably isn't necessary, they were on their way out anyway.