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Messages - syhprum

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Technology / How much would a Hindenberg ticket have cost?
« on: 18/09/2014 19:26:22 »
I would dearly have loved to travel to America on the Hindenburg Hydrogen not withstanding but I fear the cost of the trip would have been well outside of what I could afford.
What would the cost have been in terms of 2014 money and how would it compare with a Concord trip or a Virgin Atlantic third class trip..

During the occupation of the UK by American troops during WWII they were forbidden to drink English milk and had the powered variety shipped in from the USA as English milk was considered too contaminated.

Valves are another case in point when all glass valves were introduced in the fifties we had three decades of TV,s that had to be banged on top to make them work due to corrosion on the valve pins, the only ones that were reliable were the Russian ones that had gold plated pins.

Technology / Re: Why do connectors keep getting worse
« on: 13/09/2014 06:24:17 »
If I compare the cable and connectors that connect the monitor to the computer with the cable and connectors that connect the motherboard to the drives the comparison is ludicrous yet a monitor connection coming loose will only cause a moments annoyance while a loose HDD cable can result in hours of work to undo the damage.

Seventy years ago when I was making my living fixing radios one of the chief sources of annoyance was faulty valve sockets that were laborious to replace and good quality ones were difficult to obtain so one often resorted to soldering the valves in !.
In the present hi tech world where semiconductors and valves are reputed to last up to 50 years and disk drives to run 50,000 hours between failures  connectors seem to get poorer and poorer , I have just spent about a day sorting out disk drives that got corrupted by loose connections.

Far be it for me to recommend this form of treatment but this article may be of interest.

« on: 11/09/2014 06:34:59 »
The piston type internal combustion engine has had at least 130 years of development with the recent introduction of electronic control, Turbocharging and the re-introduction of variable valve timing I do not think any revolutionary developments have been missed.
Every few years a radical new design is proposed but apart from the opposed piston layout and the Wankel few if any have got into production

Technology / Re: purely electrostatic magnetless dynamo
« on: 10/09/2014 19:29:37 »
What other antique power schemes will be dug up will we have slave rowed liners or horse powered corn grinders ?

The Wiki article on magnetar,s gives all the answers, for a typical field of 10^10 T the energy density is 4*10^25 J/M^3  , converting with e=mc^2 gives a density 10^4 times that of lead.


Thank you as you say I can easily calculate the rest myself the only thing I don't know is the strength of the field of the magnastar but perhaps Wiki has the answer.

In a recent discussion of gravity and magnetism it was noted that a magnetic field stores energy that has a mass equivalent.
I am weak on units but would like to know how much energy is stored per M^3 in a 1T field and whether in the intense field around a magnastar  the mass equivalent of the energy could approach that of water 1000kg/m^3

New Theories / Re: Bohr model of the atom:
« on: 08/09/2014 05:56:17 »
there is a "Cuminas" program you can download free to read .djvu files but it does not work for me running windows 8.1 64 bit !
I found another one WinDJview that works OK so at  least I can read it if not understand

As you approach light speed the 2.7K CMBR will appear as Gamma radiation which will be uncomfortable for the occupants of the space ship

I always thought that nuclear fusion was a way of keeping ex soviet nuclear physicists amused so that they did not go and work for rogue countries like Iran or Israel.

Some forms of virus affect the behaviour of the infected creatures such as those that cause mice to be attracted to cats so that they can be eaten ! or those that cause ants to climb up stalks.

The sound of running water seems to promote the urge to pee. Is this caused by a virus wanting to get into the stream to spread ?

The zeroth commandment to mankind was "go forth and be fruitful" and is the only one to which much attention is paid.

Except for a few rare and expensive isotopes the amount of heat given of is too little to use as a viable energy source.

It is my experience that work in new technologies tends to be well paid for about ten years then fizzles out , I worked with the early crude monochrome and colour TVs which needed a lot of skilled maintenance now they are considered throw away items when worn.
I also worked with scanners both large and small for the print industry but now they have been killed off by digital cameras.

If you want a really high flashing rate you could use a laser or any other source of polarised light and a Kerr cell.
These were used in pre war projection TVs and the early HELL film recorders with which I used to work.

During WWII the signals used by the Luftwaffe to guide their bombers was interfered with so that they bombed the wrong target

An electromagnet running on AC will repel a conductive metal sheet (The London science museum has such a demonstration setup in the children's section) 

You get very nostalgic about what it was to be virile young lad 70 years ago

Physiology & Medicine / Re: body bacteria
« on: 11/07/2014 11:45:01 »
There are some very strange viruses that alter a creatures mood such as those that make mice attracted to cats ! so that they can be eaten.
It is thought some even make humans take more risks than prudence would dictate.

Technology / Re: Why aren't there tesla chargers?
« on: 10/07/2014 17:01:26 »
Cordless chargers are very useful for implanted devices such as pacemakers and cochlea implants but generally speaking a wired connection will always work better if practicable.
I believe some use has been made of charging coils for busses at bus stops but they are a rather special case.

Physics, Astronomy & Cosmology / Re: radioactive decay?
« on: 10/07/2014 16:53:49 »
some nuclear "waste" contains valuable elements such as Polonium our uranium 294 but the cost of extraction is very high and would not justify extracting elements such as Radium or trying to use the heat generated by the waste en mass to generate electricity.

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