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Was the three crop rotation rule not designed to increase fertility in the soil and remove parasites?

Don't actually agree. Ladas, Seat and dashia cars are much less expensive than their Audi and Renault equivalents. But people still buy these prestigious makes . Why is it? because they are snobs or because they expect they are buying reliability, refinement reputation, extra luxury? I think...

Using our hypothetical man and bike at 100kg , it will take about 1000joules ( 1kJ) of energy to climb a vertical height of 1 m . Work = mgh Assuming the strictly legal motor is 250w ( not going into the testing methodology or other religious beliefs) , that means it will take 4 seconds to climb...

Hi flecc .. is there a mistype in your email? .. my understanding is that the EN directive exempting low power pedelec types is as follows cycles having an electric motor , restricted to 250w continuous power output, such power being progressively reduced and not available above a speed of 25km...

Your PS is worrying.. hopefully you had intended to say chilly. Otherwise we might need to call the police.

There is a major thread on YouTube about making spot welders and other devices from the transformer in a microwave oven. ... These are readily available in the local recycling centre and are educational to strip down. The trafo is typically 700 to 900watt, so is really powerful. The idea is to...

Dave, I agree Andy, your comments about the box of smartphones is either wilful obstruction or a jest, in the spirit of Christmas and charity I am assuming the latter. Of more importance is the decision about your friends bike and the problem of lugging it up steps. Electric bikes are supposed...

No. Currently you have a SIM card and account costing we are told 12 per month. Where you to purchase for cash a phone it is your property and you could continue to pay whatever tariff you are now on. If for any reason you ceased to pay then you would only lose GSM access. The phone would...

This thread is getting very grumpy. Whether you or others wish or choose to carry Mobilephones, Hasselblads, or any other form of camera is purely your choice and none of our business. What d8veh and I have attempted to point out is that smartphones are a convenient alternative and could if...

It's not about damaging them . As you can see the spec sheet did specify that they were operational below -20 , it is that the energy recoverable at low temperature s is less. What model of skyrc do you have and what rate of discharge can it handle. I note that some models can measure the...

The bottom left graph shows it all. The energy available from the cell is the integration of voltage x AmpHrs ... The area under the curve in each case.

The voltage did not drop at all of course, but if you attempt to draw current from it you will find 1 the voltage will droop significanly indicating that the internal resistance has dramatically increased. .. use a 1 ohm load and you would hope to get 4 amps, f you get 2 I would be surprised...

Interesting thread. According to a few papers I have read, the power loss within the battery is 4 times as great at 0 c than at 20c ... If the battery needs to heat up the 2kg of battery pack, before it can give out it's rated voltage, this is a huge waste of energy. Battery would better be...

Zlantan, in post 8544 I posed you you a question which I now repeat . You have to date failed to make any response to it So I ask of you this question . Why do you think the UK will be better placed to meet the challenges of the 21st and 22nd centuries on its own rather than linked with the 27...

As a point of clarification the second set refers to the images taken with the canon s95 camera

As I understand it the lenses taken from the older camera are placed in front of the total camera belonging to the smartphone so the lens sensor and electronics of the smartphone are still in operation. The older camera lens does not replace but augments the smartphone optics. It is therefore...

The photos of the insects are stunning. You own photos are excellent and you obviously have a steadier hand than I when doing close-ups.

Andy I am more of a pick up and shoot merchant than a photographer craftsman .. so I will give you what I can about the Samsung s7 .. my phone f no 1.7. in this generation Samsung has deliberately reduced the number of pixels in order to provide better low light performance.to 12megapixel ISO...