Recent content by Swifters

http://books.google.co.uk/books?id=nymoSWlH9hkC&pg=PA934&lpg=PA934&dq=ferrofluid+central+heating&source=bl&ots=cGrrQ_puHQ&sig=Gk3tK6tktkw0bHT1Vpj44SiCN94&hl=en#v=onepage&q=ferrofluid%20central%20heating&f=false Could anyone pass comment on the above? Ferrofluid for central heating?

Anyone? I've found this link: http://www.calctool.org/CALC/phys/electromagnetism/solenoid But I don't understand the terms "Permeability, Magnetic B-field and Inductance". Is it correct that magnet will continue to accelerate through a coil? thanks

Sorry to bring this up again but is there any way of telling how much energy a solenoid will use for a lateral solenoid for a given length and diameter. Is there an online calculator? I'm interested to know how much energy is lost in the form of resistance/heat as my understanding of how they...

Sorry to bring this up again but is there any way of telling how much energy a solenoid will use for a lateral solenoid for a given length and diameter. Is there an online calculator? I'm interested to know how much energy is lost in the form of resistance/heat as my understanding of how they...

Could anyone possibly explain how ferrofluid is used in cancer treatment? Is it via an electromagnet or an alternating current? Have Googled but am none the wiser. Is ferrofluid difficult to warm up? What sort of temperatures are we talking about? Many thanks

So it will only generate a voltage beween entering and exiting the tube? Roughly what are you looking at? 0.01v or 20v?

Magnetic flux? Is that the strength of the magnet? How could I go about measuring or estimating this? I was thinking of the magnet dropping down through the coil.

Is there a formula for calculating the voltage and or current in a 2 meter length of coil? The coil being 30mm in diameter with 1mm thick wire coiled around 200 times (for ease of calculation so cable would roughly be 18.8m long) with a resistance of say 16 ohms. Magnet being a cylindrical...

any ideas most welcome...

Magnetic flux? Is that the strength of the magnet? What if it were presumed to be average? Is there a formula?

Dosent have to be precise. Any rough estimate will do. Thank you.

I have been wondering how to calculate how much current and voltage would be induced through a 2m length of coil when a magnet passes through. The coil being 30mm in diameter with 1mm thick wire coiled around 200 times (for ease of calculation so cable would roughly be 18.8m long) with a...