Fairly expensive in terms of energy density. The alternative are silver based. If you're using a watch for a year or two it shouldn't make much difference.

The Lithium cells are rechargeable (typically) or are very specialised single use.

The chemistry of cheap single use cells is based around 1-2V. I'm sure there is some chicken and egg problem where cheap cells could be developed with a higher voltage, but typically higher voltages involve batteries of tried and tested cheap cells.

Don't you guys have a competition commission to "anti trust" these mergers?

I'm not sure which of us is confused. Conic sections are solutions to two body problems or similar (the Earth is orbiting the centre of mass of the solar system, not the sun itself).

Three body problems rely on second by second force simulations. Instantaneous force simulations lead to accelerations which lead to changes in velocity and location, which feedback to the force simulations.

Euler's method and similar are ways to solve differential equations like above.

c=1/√(ε0μ0) shows the speed of light is related to the electric and magnetic field spontaneously generated by photons in a vacuum. I've probably mixed relativity with quantum theory there though...

Wagner wasn't as much of a Nazi as the Nazis made him out to be. That's the risk of art, if you make something public property (even with licenses) someone will take it to an extreme. The English St George's flag suffers a similar fate. Is the family of St George going to start chasing the EDF?

This sounds ridiculous, which must mean it's USA. You pay the check into the landlord's account directly, or you can do the same with cash. You do a direct deposit. You get written evidence (email) that the landlord only wants a check in an envelope to a certain address. If you have certified postage the onus is on the landlord to prove the envelope was empty. After all they could have given you a bank account number or a way to give cash in hand.

I seriously doubt you can evict tenants if the only argument is that it's uncertain whether the envelope was empty or not.

Probably prehistory? If you see a big ball above your head starting on one side of the horizon and ending at the other side you can join the dots. If you climb a mountain at twilight you can see some places are lit up and some aren't.

Theologies at the time will have been very dependent on the passing heavenly bodies. Survival was very dependent on keeping the mind occupied, but the body at rest. Looking up and wondering was very important.

Since it would be operating at the temperature of a coal power plant it could use the same steam cycle and turbines. In fact cold fusion could be retrofitted on top of current infrastructure with a little imagination.

Heat is the transfer of energy from a hot object to another. The temperature of an object is a measure of the typical kinetic energy of the particles.

The more measurable effect is if you have a closed column of water with a piston at the top and freeze it, the increased pressure can do work by moving the piston up. Conversely if you increase the pressure on the piston it will melt the ice.

This is how freeze-thaw erosion works when water enters cracks in rocks, freezes and breaks the rock as it freezes.

Teaching English as a foreign language relies on more than being able to speak English for this reason. Knowing the difference between "I've been painting the house" and "I've painted the house" is okay, but why isn't it, "I've been knowing my friend for five years"? English is a quirky language and it's quirks are fairly different from most other European languages.

Or you can just imagine atoms in a valley with iron at the bottom and the fusable nuclei on one side and fissable nuclei on the other side. Supernovae are like skateboards where you can get from the fusable side the the fissable side with a bit of momentum, but once you're at the bottom of the valley (iron) and have no energy source or "momentum", there's no getting back up either side.

Authors and publishers are trying to make money and have the head start on schools and public libraries.

Education systems are typically geographically fragmented including schools, libraries, museums etc. This reduces the scope for scale discounts, but publishers do have deals including physical book discounts and ebook license discounts for bulk usage. After all a library system is just another customer and they are still trying to make money.

Some countries do have a National Library system where certain libraries can demand a few copies of any published books for free. This is the exception, not the rule, though.

It's a good start, but misses the "big, bad wolf" effect that breaks the rule. ("i" before "a" or "o" for like sounding words) and the "Polyanna Principle" of putting positive or neutral words before negative words. There are a few more as well. Language rules are made to be broken and refined after all.

I was starting to get worried. Most of the time a card is rejected is because the limit has been reached. Imagine running a business and accepting that when people run out of funds / credit the business has to eat the cost.

They have their own standards, just as many countries have their standards which aren't SI. Continental Europe is more likely to use cl not ml (UK) for capacity even if they're both metric and derived from SI.

While hectares may be used for modern land deeds there are dozens if not 100s of standards around the world for land area.

Make sure you spread it! u/mayo_tipbot 69

u/mayo_tipbot 69

If you ever get into a situation where there's a problem because you used the wrong one you'll know more than anyone on this sub already!

"Greenwich Mean Time (GMT) is often interchanged or confused with Coordinated Universal Time (UTC). But GMT is a time zone and UTC is a time standard."

There are different time standards. Some add and remove leap seconds based on the real orbit of the Earth. Others don't. All time zones follow UTC with offsets of down to 15 minutes. GMT happens to be UTC+0h00m.

The Big Bang is like a bomb exploding. It starts off nice and ordered. Over time it gets more disordered. The direction of time is defined by the change from order to disorder.

Food particles is a fairly unhelpful way to look at calorimetry. If you look at respiration or combustion the products are chemically more stable than the reactants. Carbon dioxide (gas) has stronger chemical bonds than sugar (solid). A house of cards is less stable than a collapsed pile of cards. Heat energy is released in both cases when they change.

Yes, but solar panels are designed to be rigid to be structurally sound. There is research to putting thin layer type solar panels where something else is supporting them like on cars. It isn't typically cost effective for most uses, but it's a matter of time.