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Messages - syhprum
« on: 11/06/2016 23:43:14 »
The hearing function is quasi logarithmic hence the efficiency of the noise cancelling can be expressed in db how good are they ?.
« on: 11/06/2016 16:28:07 »
The two car case has 4 times the energy (shared between two cars).
E=MV^2/2 the velocities are low compared to c that we do not have to consider SR.
« on: 11/06/2016 08:46:19 »
In the "Family Guy" cartoon series that is often on the TV there is an episode where time runs backwards (Stewie very nearly gets unborn) had you perhaps watched this or left a TV running ?
Physics, Astronomy & Cosmology / Re: Please solve our argument: at what speed would you need to travel to cover 400 km's in 2 hours a« on: 17/05/2016 20:09:02 »
This is a very simple arithmetic problem rather out of place in a forum discussing Physics, Astronomy & Cosmology.
Physics, Astronomy & Cosmology / Re: How is the electrical circuit completed between the powerstation and my home?« on: 16/05/2016 10:49:31 »
American homes are normally supplied with single phase 220v with a grounded centre tap to supply low power devices with 110v.
What is the KVA rating of the local transformers and how many homes does it supply or does each home have its own transformer ?
Planets are considered to be capable of supporting life if they orbit their star within the goldilocks zone where liquid water can exist.
By my reckoning the Earth lies outside this zone with a black body temperature of 250°K where water can only exist in a solid form.
Would alien astronomers write it off ?
« on: 24/04/2016 13:56:12 »
Up until 1965 most British TV,s had very crude power supplies that injected 0.3A back into the mains, I have of6ten wondered if this had a bad effect on the transformers.
« on: 22/04/2016 14:27:06 »
I think Alan underrates the severity of the English law in a recent case a defendant accidently killed a police officer trying to stop his car in a case where the charge would normally have been one of causing death by dangerous driving was charged with murder and despite the disagreement of the jury the was convicted of manslaughter and sentenced to 21 years imprisonment.
« on: 22/04/2016 14:15:42 »
If the problem was acute the pilots direct view could be replaced with a television system where only one of several redundant cameras each incorporating different filters would be the only things risking damage.
I would expect such a system to introduce additional dangers and only be used if the problem became acute.
« on: 17/04/2016 19:14:40 »
Although at present it does not seem possible to shield against gravity does it not depend on whether or not the Graviton has mass ?.
The graviton is postulated to have a mass vastly smaller than that of the Neutrino and its hard enough to shield against that but if the Graviton has non zero mass there is at least a theoretical possibility that it can be screened against
« on: 17/04/2016 00:23:43 »
Colliding black holes emit a vast amount of energy in the form of gravitational waves for a few milliseconds ,What would be the effect of this on one or would other forms of radiation pose a greater threat
« on: 16/04/2016 16:00:17 »
I Victorian times it was believed that it should be possible to obtain a picture of the killer by dissecting the eyes of the vivtim
« on: 16/04/2016 10:24:45 »
One of the limitations of obtaining information from brainwaves is that it is unethical to insert probes directly into the brain this of course would not apply if the person being interrogated had what the authorities regarded as information of value to the military
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