This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.
Topics - syhprum
« on: 05/06/2015 22:44:54 »
While staying in a friends house I Indianapolis I came across an 8 year old Samsung cell phone as I have a charger for these phones I thought I would try and revive it for use when I stay there.
The camera worked fine so I looked round for a Bluetooth dongle to get the pictures off and found one for $2.00 at a nearby garage sale and it worked fine with both the old cell phone and my 3 year old one.
When I returned I brought it with me but not the dongle thinking it would work with my regular Bluetooth but no luck.
The dongle that I left in America was supposed to work version 4 so I bought a new CRS dongle from Amazon but no luck with that either.
Bluetooth is rather a work of art but I can normally get it working and with the new dongle it is quite easy.
I really miss my Siemens R30 (IBM360 clone) of 1975 vintage it might have cost 100 times as much as a pogoplug box and only had a 10 MHz processor and 256 KB of RAM but at least it had proper connectors that bolted in with gold plated pins.
I have had 2 hours of agro because one USB socket does not work as well as another.
« on: 12/05/2015 19:38:20 »
Equivalence theory tells me I should not be able to distinguish between acceleration and gravity but when my tall space ship is sitting on the earth I can measure a difference in G whether my instrument is on the floor or near the ceiling.
Presumably this would not happen when I was away from the Earth and accelerating in space.
« on: 10/05/2015 05:38:08 »
As a result of taking tablets to reduce blood pressure I suffer swollen legs and feet would diuretics help.
« on: 26/04/2015 22:05:18 »
As a boy we were taught that the nucleus of an atom consisted of protons and electrons, Neutrons like radar were military secrets we did not want the Germans to know about.
After the war we were told that this was nonsense and the nucleus consisted of Protons and Neutrons, with the discovery of Neutron stars it was postulated that Electrons could be forced into Protons by gravitational pressure so the first theory was not that far out.
how does this happen Protons and Electrons and are of different classes of particle I would have thought that any union would be impossible.
On the recommendation of Chris I thought I would try Kali to which end I made a 50Gb partition on my spare drive and downloaded a compressed ISO version from the internet which came in in 7 minutes.
I thought this won't take long ,decoded to my regular loading USB dongle , selected with the BIOS but the only result was "no system".
selected the drive on which to load it clicked on setup and the answer was not compatible had another go and it eventually let me start.
There was then a procedure putting in passwords and what not then at last it asked me to make a restart and tell it which partition to put it on.
it then insisted that it did a forensic clean up of the empty partition that looks like taking about two hours .
If I am presented with a serviceable computer with an internet connection available but is dead because the drive has been formatted is there any way I can bring it to life not having any software to hand.
I would like to experiment but do not have a spare drive to hand
« on: 18/04/2015 20:23:46 »
It is all to easy to end up at a remote airport with no cash or papers to this end I have put scans of my passport and bank cards onto my PogoPlug cloud account so that if I can get onto the internet I can book into a hotel and hopefully get back to this blessed land.
I need access to a computer and need permission to download the PogoPlug software and print out my cards etc.
if permission was withheld could I access my cloud or any other bearing in mind the computer might have old software like XP32 ?.
« on: 26/03/2015 22:05:15 »
With the two recent cases of two apparently mentally disturbed pilots deliberately crashing passenger aircraft it seems that the measures to prevent access to flight decks by terrorists are counter productive suggest improvements.
« on: 16/03/2015 09:10:44 »
It is believed that the mass of galaxies is largely made up of "dark matter" hence we are immersed in the stuff are we right in assuming that the speed of light outside this sea of "dark matter" is the same as that which we measure locally
I record weather satellite pictures automatically on my minidisk recorder and with my new computer everything that is inputted to it is date stamped so when I wish to reproduce the pictures I have to reset the clock on my computer so that it thinks it is playing them at the correct time.
There is a program available (Wxtrack) that tracks the satellite and outputs a bleep at AOS and LOS that tells me when to start the play back from the recorder.
I would like to automate this is there any simple way I can get the computer to output a logic signal (thru the coms port ?) that would start recorder directly.
I am contemplating adding a tone detector to the recorder to generate this logic signal from the audio output of the computer but it would be more elegant if I could do directly.
« on: 10/02/2015 09:00:53 »
A new theory about the origin of the universe seems to give us back the ether sorely missed by we old timers
« on: 08/02/2015 10:42:41 »
WWII showed the need for secure voice communication between the UK and the USA to this end the 55 ton 30kW SIGSALY system was developed to scramble speech via a radio link.
Was a consideration given to using the telegraph cables between the UK and USA ? The better cables had a bandwidth of 100Hz and speech compressor's (Vocoders) had been developed in 1939 so it at first sight it would have seemed to be possible.
Several aircraft crashes have been attributed at least partially to failure of air speed indicators.
Their must be a strong correlation between the airspeed and the pressure in the cowling behind the fan and the rotational speed of the fan, the pressure increase should be little affect by icing due to the high speed of the fan.
I take I am not the first to think of this so what is wrong with the idea ?.
There are normally at least two engines working so a check could be made between their indications and that of the regular air speed indicator
« on: 24/01/2015 19:51:55 »
Analysis of radar sightings and black box recordings seem to indicate that the air Asia plane QZ8501 got into a stall condition that the pilots were not able to control after attempting a too steep climb to avoid turbulent weather.
Could a computer have done better ? could there be a switch for the pilots to throw saying "we can't fix it you have a go"!
The pilots could well be reluctant to throw such a switch could there be some mechanism to take the decision out of their hands?
« on: 05/12/2014 07:53:27 »
I have always believed the black body temperature of the earth to be -18°C too cold for liquid water although of course our water vapour and CO2 atmosphere pushes this up.
Is probability of an atmosphere considered when defining the habitable zone.
« on: 14/11/2014 22:31:20 »
I should not presume to tell the ESA team how to operate their comet lander but I am surprised that if it is receiving maybe 20% of the anticipated sunlight needed to maintain its batteries charged could not all scientific programs could be shut down leaving enough power to maintain communications until the comet gets closer to the sun.
I have a rather antique printer 1995 (LaserJet 4 M Plus) vintage that normally serves me well but today I tried to print out a 29 page PDF document using Acrobat 10.0 and ended up having to print one page at a time with missed portions and many strange error messages.
So I hunted around and found a free and simple PDF reader Sumatra PDF that worked like a dream.
I only have windows 8.1 and Windows 10 systems maybe it would have been OK with an older system.
PS I Tried with Puppy Linux but could not get the usb printer to connect
I would not dream of buying a lotto ticket or even filling in a number on an un entered one in case by some mischance it proved to be a winner.
Out of curiosity I listened to the spiel of a conman selling books for $99 telling you how to win and got curious as to how the numbers are computed.
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..
« on: 12/09/2014 16:53:55 »
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.
« on: 09/09/2014 20:54:53 »
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
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 ?
© 2000–2013 The Naked Scientists®
The Naked Scientists® and Naked Science® are registered trademarks. Information presented on this website is the opinion of the individual contributors and does not reflect the general views of the administrators, editors, moderators, sponsors, Cambridge University or the public at large.