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I thought the explosion would cause near 3000 psi... 🤔 (Subject is not about compression ratios nor temperature)

Hello. At the explosion/expansion cycle of a plain internal combustion engine -no turbos/high performance/fancy fuels- what pressures ranges are typical ?

Hi. On a recent thread about microwaving steam, a graph posted has this portion : Is the word vapour valid only for the pink area left of the vertical red line by 100C ? and steam the correct word for the area at right of that vertical red line by 100C ? If I leave a glass of water under my bed for a couple of weeks; it will be dry. Water turned to vapour, was never exposed to over 100C. If the same glass of water was exposed to over 100C, it turned to steam, not vapour. Am I wrong ? Or should the graph say GAS instead; that depending on temperature it can be vapour or steam ?

Thank you. When water already reached boiling in a microwave oven (100C) but the oven is still 'on'; what is the energy doing to the water/pot/steam/air/contents, assuming the air and the pot are transparent unaffected by the microwaves, and walls are reflective ? What changes that boiling becomes more energetic ? Water cannot rise more its temperature, what else is happening ? The boiling bubbles are pure steam, right ?

Hello all. While cooking or just boiling water in a glass pot, the water boils limited to 100C; does the steam above the liquid surface bombarded with microwave energy rises above 100C ? In other words, what happens exposing steam to microwaves ?

Would a swap in positions be beneficial to their party and elections ? Biden for vicepresident ? 🤔

Is it in reference to this ?

Thanks. Abstaining of comments, the intention was just sharing images to the thread.

Was not a link but a inserted image. Trying a screenshot: And 'the same medicine' image as screenshot : (graphic image removed by mod)

Really ? Does anyone see it ? Is everyone not seeing it posted ? Seems Peterkin cannot either. The 'same medicine' or the 'trajectory' or both images ? 😳 Please someone tell...

Thanks. I believe the behavior of the contraption is not even understood by mostly the far easterns making them, giving it a flavor of mystery to convince themselves. Just like religion. It is the gods doing the pumping. So it must be true; and to be believed.

Thank you again, Spain 😇

Picture of the bullet trajectory...

Thanks. No electricity at the cistern location, for pumping, blowing or vacuuming, and not hermetic. Is 3m x 5m x 2m deep made of concrete blocks.

Please delete if improper to post. The same medicine applied.

Yesterday my farmer-background-style neighbor saw me watering plants with a bucket as my cistern was too low to siphon for irrigation, and told me to build the "container" sheeety pump. I asked him to build one for me and show me how it can work. Here I go again. Now it is trendy ? What is going on ? Doubt he will build one, but I will push him hard for it. And he says to do it with a bottle as 'container' 🙄 More of the same crap videos I do not understand... WTF? Export to speculations if deserved; but do not bring ram pumps to the mix, please.

Greetings. Do you know of a hydraulic piston or piston-cylinder assembly that I can re-purpose instead of fabricate/re-invent the wheel ? Similar to brakes, much larger diameter, like 50 to 100 mm. To work in reciprocating motion, only about 50mm travel, ~<10 strokes per second, up to 5000 psi. (not with a seal for rotating shafts) It is to produce pulses of hydraulic pressure. Like a driven small engine using it as a hydraulics reciprocating compressor 🙄 -Images borrowed from the web-

Two days ago, saw in TV news there is trouble in California as solar generation is exceeding the handling capability. Too much production at certain times of the day forcing utilities to decrease conventional generation and trouble in transmission lines. They were talking about a 'duck curve' and about eliminating subsidies and tax incentives to solar installations to discourage solar. 🙄 Now am pissed. Discouraging solar to raise profit of utilities that have had the pan by the handle $ince day 1. So... Houston, YOU have a problem with greed. ---> https://www.eia.gov/todayinenergy/detail.php?id=56880 ---> https://www.washingtonpost.com/climate-environment/2024/04/22/california-solar-duck-curve-rooftop/ ---> https://www.energy.gov/eere/articles/confronting-duck-curve-how-address-over-generation-solar-energy

Hi all. It is very easy to write with lead metal on paper and other surfaces. Same with tin metal, learned the same happens with indium metal. Where pencils ever made initially with soft metals ?

Thanks, studiot. No flux incorporated, solid not hollow wire. Melts correctly with my plain typical soldering iron for electronics work. Unable to find data about it. Highly likely sourced from a local Sylvania incandescent light bulb factory that closed doors. While searching, noticed a trend from solder manufacturers on not telling the alloy contents but christening it with a letter soup to identify their product. Interesting how they have had open formula information to the competitors before. ---> https://buy.solder.com/product/5-Solder-Alloys-Wire-Kit/

Hello. Received a present, a 20 lb solder wire roll of 89.5% Sn; 10.0% Sb; and 0.5% Cu. Does anyone know what is intended to solder ? Radiators... electrical... plumbing... ?

Hi and thanks. Yes, I may have posted a contraption of 1200W solar panels heating a 20 litres water container indoors to boiling! temperature and releasing its heat also after sunset. (lasts to about midnight). I use it only in winter. Posted also a spiral length of black PVC pipe on the roof feeding the standard electric water heater inlet with pre-heated water for a much less energy consumption in summer. And a photovoltaic roof solar system heats and supplies all the house all year from the surplus grid-tied generated. My electrical bill has been $0.0 the last 37 months and the system paid for itself last month.

Hi StringJunky. All sizes from a grain of sand to ~20mm; goji, lychee, pistachio, caper, culantro, peach, plum, These pomegranates germinated well, like 70 of 100 : First time trying now to germinate in the refrigerator ~5C : wintergreen.

Tried that way and it is worse. Currently using soil in capped clear these by a window :

Hello. Germinating moist seeds in capped containers sometimes spoils the seed with mold / fungus growth. Is there any chemical placed on a absorbent tissue attached under the container cap that will not harm the soil or the seed ? Would vinegar work ? A piece of moth ball ? I usually microwave the soil in 30ml. containers for germination but not always effective.