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4hv.org :: Forums :: General Chatting
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The ideas thread

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Physics Junkie
Sat Dec 22 2012, 02:04AM
Physics Junkie Registered Member #7267 Joined: Tue Oct 16 2012, 12:16AM
Location: Detroit, Michigan
Posts: 407
Link2 sixth sense technology.. this is absolutely amazing! Obviously not my idea.. but this type of technology could be much more if expanded on. Highly recommend watching this. "Ideas worth spreading" !
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Chris Cristini
Sat Dec 22 2012, 05:57PM
Chris Cristini Registered Member #1749 Joined: Fri Oct 10 2008, 02:04AM
Location: Claremont New Hampshire
Posts: 497
I had an idea about using a gps receiver help control speeding because I have a GPS that states the speed limit if that is possible for a GPS to know the speed you can use it to electronically govern vehicle speed it however does not work every where but where it does work It could prevent a number of traffic accidents caused by drunks or punks.

Another idea is to make lcd windows that you could control with a POT on the dash basically adjustable tinting or using Photo sensors to adjust in sunny conditions but you get in to a crash and ruin your several hundred dollar windows you would not be happy.


Recreate the Wardenclyffe tower with todays technology and actually use it. cheesey


Come up with new Electrical components what I don't know Because I am talking things we do not have yet.
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Conundrum
Tue Jan 08 2013, 06:33PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
My contributions for today.
Spherical drone that charges up from ambient solar and wifi/3G energy, containing some clever software, sensor array and 64G of flash containing the "r*inb*w tables" for WPA2 to allow it to send back telemetry.
Also has magnetic clamps so it can park on convenient lamp posts to charge up, and fully self contained counter-rotating blade disk stacks that can be varipitched to allow it to navigate with no external moving parts.

Making the topmost blades out of solar cells encased in resin would multipurpose them allowing a further weight reduction.

If more than one was in an area, they could exchange nav data so eventually they would all have a complete area map and locations of convenient "refueling points" smile

Sound possible?
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hboy007
Sat Apr 27 2013, 07:56AM
hboy007 Registered Member #1667 Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 373
Normal webcams with not-too smart-sensors (without on-chip image compression etc.) might be able to run at a multiple of the framerate they're designed for. Maybe one can manipulate the control data to the image sensor so that the readout jumps back to the first pixel line after e.g. a sixteenth of the sensor is read. The resulting picture would look like a vertical stack of ROIs.
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coillah
Tue Apr 30 2013, 04:10PM
coillah Registered Member #1517 Joined: Wed Jun 04 2008, 06:55AM
Location: Chico CA
Posts: 304
This is of course hilarious, not that I would ever do it...

Link2
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hboy007
Wed Mar 12 2014, 06:18PM
hboy007 Registered Member #1667 Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 373
Just read this acticle about acoustic cloaking:
Link2

So if reflections are pretty much what they should look like with the cloak in action, how about the behaviour over different frequencies? One could also imagine an insanely complex contraption where toroid vortex structures are produced that propagate through the water. Any surface could then be probed by obtaining faint doppler shifted scattering / primary reflection.
(yes, try to get doppler information from propagating vortices^^)
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Patrick
Wed Mar 12 2014, 08:06PM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
hboy007 wrote ...

Christmas ... time to try and change the world for the better wink

I don't know if anyone has come up with this (and it would kinda spoil the fun to go looking for it): Assuming that man is a creature of habit, a "directional coupler" for highway exits could be created by having drivers keep right. The wrong-way driver is presented with a junction and maybe some direction signs.

Driving

Add some spikes and water-filled barrels and you can start your personal collection of wrong-way drivers.

I'd really like to see that structure implemented :D
Of course this also works for countries where you drive on the left side.. just mirror the design then

in the US, we already have this system. but currently it uses napalm and high explosives.
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hboy007
Wed Jul 30 2014, 11:45AM
hboy007 Registered Member #1667 Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 373
I was recently pondering the idea to use cosmic rays to do tomography without and extra radiation source. The LHC experiments do cosmic ray runs to register detector modules onto each other so at least transmission images should be possible. I discarded the idea due to insanely long acquisition times.

These guys however haven't, and they intend to use muons:

Link2

and they're actually measuring the path deviation of muons (the heavy, decaying cousin of the electron)

Muons as known for their long range and good penetration owed to their small e/m (unity charge over a large mass) ratio and relatively long half life (~2.2µs in the body-fixed frame of reference - yes, travelling at speeds near c allows them to appear longer-lived from an outside observer's position).

For an extra dose of delicious muon science, check out the Compact Muon Solenoid (CMS) experiment at the LHC:
Link2

where it takes tons of steel and powerful magnets to bend muon paths. Note that, as the CMS logo already suggests, muons cannot be contained within the calorimeter structures so they are "just" tracked and their energy is derived from the particle paths.

But where do the muons come from? Look at this simulated electromagnetic air shower caused by a high energy cosmic particle:
Link2



ps.
Link2
Link2
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Conundrum
Fri Aug 15 2014, 08:10PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
Had an interesting idea today, what if the behaviour of Type 2 superconductors can be simulated by assigning each atom in the lattice a cross sectional area equivalent to its mass, then arranging them in order of cross section like a funnel.

As the temperature decreases reduce the cross section until the end of the funnel "closes off", this would represent the critical temperature.
A sudden change in the angle between the sections would represent a discontinuity which would suggest an unstable material with interesting properties that could be redoped.

This might allow known formulae ie Y123 to be tried with heavier elements with the same effective change in angle, might allow a higher Tc material to be designed.


An alternate approach would be to assign the atoms frequencies corresponding to their mass, and then simulate the resulting major resonances to see if that relates to Tc or other measured properties.

Also had a thought about light induced superconductivity.

Maybe RF would do the same thing, a simple test would be to take a non superconducting perovskite and expose it to swept RF at low temperatures to see if there is a resistance drop at a specific frequency.

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hboy007
Fri Oct 17 2014, 06:22PM
hboy007 Registered Member #1667 Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 373
I was traveling by train the other day and while reading an article about the reversal of the Earth's magnetic field possibly happening within a century I wondered:

why hasn't anyone built a solar / thermal powered magnetic field logger that stores the momentary magnetic field onto a ferromagnetic medium?

Surely it won't be hard to get the basic principles right (e.g. some simple burning glass optics to harness sunlight to heat ferromagnetic particles above the Curie temperature combined with a means to transport the recording medium) but like the Oxford Electric Bell, the Pitch Drop Experiment and The 10,000 Year Clock the beauty would be in the system design and engineering details. Then we could build a mesh of magnetic field loggers that will take data for many generations to come, all over the world and for the future of science no matter what human or natural events will keep us from doing it ourselves.

This basically is paleomagnetic recording in high fidelity! The field reversal will be quite dynamic and we won't get to see another one in roughly 800.000 years. Quite a rare event indeed!

Anyone please suggest something that keeps me from pursuing this idea wink
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