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Author Topic: 7) Tech & Sci News  (Read 28986 times)

Luck

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7) Tech & Sci News
« on: June 02, 2011, 07:04:31 pm »

[Note: Latest posts are at the End of the Thread.]

Some Tech & Sci News Sources
http://www.livescience.com/technology
https://grahamhancock.com/news
http://phys.org
https://www.sott.net

Make Solar Panels from Cheap Solar Cells
http://forum.freestateproject.org/index.php?topic=23835.0
* I just found out yesterday about how to get cheap solar cells with which to make your own solar panels cheap at this site: http://www.homemadeenergy.org.
* Then I found this site, http://www.bringaboutgreen.com/solar/where-buy-solar-cells, which has a link to where to find solar cell dealers to order from on eBay. You can also go to eBay and search for "solar cells". This site says tabbed solar cells are a little more expensive than untabbed ones, but it takes about 6 hours to make a solar panel from untabbed solar cells, but about 2 hours from tabbed solar cells.
* I'm in NH now with an RV and I plan to order solar cells soon and make a solar panel. They should save lots of money on electricity prices.

- Good Day. Lloyd
nhc.lefora.com
« Last Edit: April 23, 2017, 07:56:13 pm by Luck »
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powersupplyguy

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Re: Make Solar Panels from Cheap Solar Cells
« Reply #1 on: June 12, 2011, 07:59:36 am »

Ok, sounds good.

I expect to put a few KW worth on the roof.   I'm also going to do a wind survey on my property.  I'm on a hilltop and hoping to be able to put something up.  I would like to be totally off the grid if is economically possible.   I am power supply design engineer, so I expect to homebrew the charger and inverter.  If you have any problems or questions msg. me.

regards,
Bob
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Luck

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Re: Make Solar Panels from Cheap Solar Cells
« Reply #2 on: June 19, 2011, 09:35:36 pm »

* The tabbed solar cells seem to go for about 80 cents per watt. A friend just mentioned this site, http://www.sunelec.com, where whole solar panels go for $1.55 per watt. That's about twice the price, but you don't have to buy all the material to assemble them. So that seems to be a pretty good deal. Other supplies there seem to be reasonable too.
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powersupplyguy

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Re: Make Solar Panels from Cheap Solar Cells
« Reply #3 on: June 20, 2011, 11:54:46 am »

Nice link. $1.55 is a very good price.  Last time I was poking around they were about $3/W.  I'll probably start with a few KW or so and grow as I become more comfortable with it.

regards,
Bob
N9NEO
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Luck

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Re: Technology: Solar Panels [Update: Hackerspaces Projects]
« Reply #4 on: July 03, 2011, 07:59:18 pm »

Technology to Avoid Speeding Tickets
* I heard about Hackerspaces.org at AltExpo at PorcFest on the Saturday before last [6/25]. I started looking through the list of worldwide Hackerspaces projects at http://hackerspaces.org/wiki/Projects and found this one, which seemed worth sharing here. It's from http://hackerspaces.org/wiki/GPS_cruise_control,_speeds_up_automatically and it says partly as follows.
GPS cruise control, speeds up automatically
Why    To avoid unnecessary speeding tickets
Where    Memphis
Who    Jim Pruett
More Info    http://www.wikispeedia.org
Imagine a car that slows down at speed traps!

* This project, MusicTank Mk.III, at http://hackerspaces.org/wiki/MusicTank_Mk.III, says in part "The tank also functions as a small power generator offering 400 watts of 110v power".
* Several others sound interesting too.
* One of the Hacker speakers at PorcFest was from a Hackespace in Lowell, which was in the process of moving to a larger space in Nashua, i.e. at 29 Crown St, but you have to go around the block a bit to reach it, as it's on the backside of the long building there. So a couple of us went down and saw the place yesterday, Saturday, during the open house. They were signing up people to rent use of the space. They have drill presses, a metal lathe, a milling machine, a 3D printer, a 150 watt laser cutter, computers, meeting space etc. It's got about 6,000 sq. ft. of space and the ceiling is about 20 ft high.
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shelbydz

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Re: Technology: Solar Panels [Update: Hackerspaces Projects]
« Reply #5 on: August 22, 2011, 08:58:48 pm »

It seems that these sights require you to purchase,'special instructions n putting together a solar array. Has any one done that yet? If so, was it worth the investments?

Thanks!
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Luck

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Re: Technology: [Update: Cheap, Safe Aircraft/Spacecraft]
« Reply #6 on: September 10, 2012, 04:41:34 pm »

Coming Soon: Fly to Asia in Ten Minutes, Cheap
http://www.keshefoundation.org/en/media-a-papers/keshe-news/316-the-world-peace-invitation-and-release-of-technology
Quote
    ... our call is going out to every government to appoint a team of scientists to come and see our technologies at first hand. Then they can decide whether or not to make use of them. If you ignore this invitation your nation will soon have no choice but to follow the lead of the nations who have decided to develop them.
    ... The reasons for this invitation and the meeting are as follows:
    - On 21 September 2012 the Keshe Foundation will release the first phase of its space technology and the gravitational and magnetic (Magravs) systems it has developed, to all scientists around the world simultaneously, for production and duplication.
    - From that point on, international borders will cease to have any real significance. This is because, once the first flight system has been built and put into operation for the public, the time of travel for example from Tehran to New York will be about 10 minutes maximum.
    - The new airborne systems will enable every individual to make the same length of journey in the same time and at hardly any cost from any point on this planet. The craft will not be detectable with present radar technology.
    - The energy crisis will be resolved at a stroke, and once the technology is put into practice the powers that control energy supplies and through them the present financial structures will find their hands empty.
    - The world water shortage will be addressed and resolved by presenting this technology to the public soon after the release of our energy and space technology.
* Here's more from http://www.keshefoundation.org/en/media-a-papers/interviews/144-keshe-launching-energy-generation-and-space-exploration-plasma-technology-en:
Quote
    He plans to publicly demonstrate the technology to thousands of people in major cities around the world next year; and he plans to start booking flights for space travel – e.g. up 60 km above the earth – by 2014, and for flights to the moon by 2016, transporting thousands of people to those destinations for a small fraction of the cost of what fuel-based shuttle services are projecting. He'll even be accepting down payments with guarantees for both flight opportunities. You'll be able to put 20% of $50,000 Euros down to reserve your seat on a trip to the moon. "It may even end up costing less than that." Wait a while longer (past 2016) and you could even get to Mars in a matter of a few days, rather than months. http://KesheSpace.com is being set up for booking flights.
    ... his plasma reactor creates a local imitation of the Earth's magnetic-gravitational properties, complete with magnetosphere, providing protection from the cosmic rays that can otherwise be deadly outside of the Earth's atmosphere. Because the phenomenon is local to the reactor, a gravitational force of 1-G is maintained for all craft occupants, including during acceleration and deceleration.
    ... the technology is far enough advanced, and simple enough that a licensing party could be in production in a matter of several weeks, not including the 2-3 month training period for learning the technology.
    ... a 3-5 kilowatt [generator] unit might cost $200 Euros and last 20-30 years.
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MaineShark

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Re: Technology: [Update: Cheap, Safe Aircraft/Spacecraft]
« Reply #7 on: September 10, 2012, 06:10:57 pm »

Plasma cannot magically generate gravitational forces.  It's just ionized gas.  If you've ever seen a spark, you've seen plasma.

Nor could mere kilowatts of power (of any sort) generate the sort of energy needed for transportation.  Even if you can magically create gravity from electricity, and even if you could magically do that with 100% efficiency, a few kilowatts won't get you more than a few hundred feet in the air, slowly.  Regardless of how you do it, there's a certain bare minimum of energy necessary to lift a given mass a given distance at a given rate, against a given gravitational field.
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"An armed society is a polite society" - this does not mean that we are polite because we fear each other.

We are not civilized because we are armed; we are armed because we are civilized..

Luck

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Re: Technology: [Update: Algae to Biocrude in 1 Minute]
« Reply #8 on: November 14, 2012, 06:05:20 am »

http://www.ns.umich.edu/new/releases/20947-biofuel-breakthrough-quick-cook-method-turns-algae-into-oil

researchers can "pressure-cook" algae for as little as a minute and transform an unprecedented 65 percent of the green slime into biocrude.

Savage's lab, filled a steel pipe connector with 1.5 milliliters of wet algae, capped it and plunged it into 1,100-degree Fahrenheit sand. The small volume ensured that the algae was heated through, but with only a minute to warm up, the algae's temperature should have just grazed the 550-degree mark before the team pulled the reactor back out.
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KBCraig

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Re: Technology: [Update: Algae to Biocrude in 1 Minute]
« Reply #9 on: November 14, 2012, 06:09:09 pm »

Savage's lab, filled a steel pipe connector with 1.5 milliliters of wet algae, capped it and plunged it into 1,100-degree Fahrenheit sand.

But did it produce more energy potential than was used to create the 1,100 degree sand?
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Luck

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Re: Technology: [Update: Algae to Biocrude in 1 Minute]
« Reply #10 on: November 19, 2012, 09:13:59 am »

Quote
But did it produce more energy potential than was used to create the 1,100 degree sand?
I don't know, but it only needed about 500 degrees in reality, so heating directly with a blowtorch or something might do the job. 1.5 ml is about 1.5 grams for wet algae, about 5% of an ounce. Would the blowtorch use that much biocrude to heat the algae for one minute?

It doesn't sound very impressive so far, does it.
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MaineShark

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Re: Technology: [Update: Algae to Biocrude in 1 Minute]
« Reply #11 on: November 19, 2012, 09:49:53 am »

Well, the 1100-degree sand was used for testing purposes.  It's a common lab technique, because the sand just brushes away.

In actual production, I would expect that the algae would be pumped through a pipe, which in turn is immersed in an oil bath.  The pumping rate would be such that the algae slurry spends the right amount of time flowing through the heated section of the pipe (eg, if you wanted a minute of exposure, you could have ten feet of pipe, and pump at a 10ft/min flow rate).  For large scale production, you'd have a large number of pipes running through that oil bath.

The oil would not need to be heated to 1100 degrees, as it transfers heat more efficiently than sand, and the metal pipe would already be hot before you started pumping the algae, so the added temperature needed to pre-heat the metal during the experiment would be absent.  If you were trying to quickly heat the algae to 550 degrees, the oil would likely be something around 800 degrees.  That's readily-achievable from a variety of energy sources: solar, solid biomass like wood chips, liquid biomass like vegetable oil, etc.
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"An armed society is a polite society" - this does not mean that we are polite because we fear each other.

We are not civilized because we are armed; we are armed because we are civilized..

Luck

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Re: Technology: [Update: Spectacular Engine Oil]
« Reply #12 on: December 23, 2012, 11:43:19 pm »

Here's a Christmas present.

My nephew was just telling me and the family about Schaeffer's oil for car engines. He's taking classes for auto mechanics and I think he said the teacher got an old Econoline van from someone and they took the engine apart to display for the public, because it's extraordinarily clean and in great condition after getting just over ONE MILLION MILES on it. And the good condition is credited to Schaeffer's oil. I think this is their website link: http://www.schaefferoilreps.com/ .

It's synthetic oil. My nephew said the oil only needs to be changed about every 9 or 10 thousand miles, so it's really not more expensive than regular petroleum-based oil. The company is based in St. Louis and distributes nationally and internationally. Looks like the nearest company Rep to NH is in PA, so maybe a Free Stater in NH should become a Rep. Feel free to pass the word on that.

I'm pleased to be able to share news about a technology that actually exists and is readily available to the public.

Happy Christmas, Folks!
« Last Edit: December 23, 2012, 11:48:20 pm by Luck »
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MaineShark

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Re: Technology: [Update: Spectacular Engine Oil]
« Reply #13 on: December 24, 2012, 08:36:26 am »

The same is true for any decent-quality synthetic.  And I'd guess that was a Powerstroke engine in that van - they are known for lasting that long, or longer.

Filtration is more important to longevity than the oil used.  Mount a second, low-micron bypass filter if you want to reduce engine wear.  The standard filter can only filter so well before it impedes oil flow, so there's a balance between capturing all of the contaminants and not restricting flow.  A bypass filter only filters a fraction of the oil flow at any given time, but it filters it really well.  After a certain amount of time, that fraction at a time adds up to having filtered all of the oil.  Stick magnets on the filters, as well, to capture any metal particles.

With a bypass filter and a quality synthetic, you can easily go more than 15k miles on any quality synthetic.  When you get to that point, what you typically do is take a sample every so often (interval determined based upon your engine and the use of the vehicle) and send it for analysis.  The company doing the analysis will return a report that tells you how the oil is doing, and lets you determine when it's actually time to replace it, rather than doing so on a set schedule.
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"An armed society is a polite society" - this does not mean that we are polite because we fear each other.

We are not civilized because we are armed; we are armed because we are civilized..

Luck

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Re: Technology: [Amazon.com Delivery Drones]
« Reply #14 on: December 08, 2013, 11:16:43 pm »

A useful purpose for drones, instead of for murder:
http://www.youtube.com/watch?v=F9_vxLNooa4



« Last Edit: February 15, 2014, 10:25:38 am by Luck »
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