Recent content by synch

The volume is the significant factor, not the weight. The CH4 burns to CO2 or CO (same volume as the methane), and H20 (probably condenses at the pressures/temperatures underground).

IIRC it is possible to burn using a oxygen-in-fuel system instead of the usual fuel-in-oxygen. I wonder if the oxygen resulting from water hydrolysis can be burned in the natural gas down a gas well ? The CO2 would then be left in-situ down the tube, the combustion could run the generator to...

Brilliant ! Thanks, exactly on the spot. I see the READ has a transfer of control option, for EOF or errors. My initial programs were on a 6700, I enjoyed it. As a pastime decades later I have written an interpreter, which has forced me to understand programming languages in quite more depth...

I think it was Fortran 66 on a Burroughs 6700 but I don't have a reference mentioning exit at this stage, it may be a vendor extension. Generic references include it in f77 and later. Eg an EOF(n) function that would check for an end of file condition reached on unit n. So that was checked...

[ Historical program question - I am not asking advice about current versions ] About reading a file with an arbitrary number of records in say Fortran 66 : Typically a DO loop was used to repeat a READ statement. There was an option in a READ statement eg END = nnn, with nnn being the...

I wonder what happens when a very thin gas is combined with a more usual gas like ethane, I guess the viscosity tends to default towards the more viscous gas ? [small correction to my post - ethane or ethylene can be from bioethanol, hydrogen itself can be from the source sugar/biomass used for...

Decades ago, our domestic gas supply was changed from coal gas to natural gas, and I watched on as our kitchen oven had different jets fitted. As coal gas had a large fraction of hydrogen, obviously the pipes etc in use at the time were ok with hydrogen. Now the times have changed and there...

Always good to see a demonstration of physics !!

It was something involving enthalpy and T delta S.... but before I waste your time, thanks guys , I'll read up a bit and get back

... { OMG I am starting to remember uni from forty years ago... ] that would be using the specific heat capacity of the liquid ,,,errrm say 4.18 J / g water as an approximate constant...so calculate the energies of the two portions, add them and then use the combined amount to work back to a...

See if they absorb light at the characteristic wavelengths, it might be a very faint effect though. AFAIK the uranium glass was for fluorescence effects. The current from a Van de Graff may be too small for good visibility. I think the current through a standard neon sigh tube is eg 10 - 20...

[ I think I should have asked this many years ago when I was studying !!! However it will help me re-understand thermodynamics and entropy a bit, and may be good for others on the same path so... ] Considering two portions of a liquid. Container A liquid is at a high temperature, container B...

Just a thought ... Given that the earths magnetic field has a stream of small changes, would a power transmission line forming a loop around the equator generate useful power ? Not exactly economic of course. Maybe just circumnavigating the arctic circle would be enough ?

Explanation In more detail: The cell has three electrodes. It has 1) a hydrogen evolution electrode, to evolve hydrogen, as used in an electrolysis cell 2) a lead/lead oxide electrode, to store power, as used in a lead acid battery 3) a methanol electrode, as used in a DMFC ( direct methanol...

At a guess the cobalt is replacing metals in the stainless steel and the darker shade is from different texture or oxides. There is a similar technique where a weld is made less conspicuous by using a DC electrolysis and a brush, IIRC the heat of welding selectively vaporizes chromium(?) which...