tag:blogger.com,1999:blog-7338070402887246857.post4317431495912763924..comments2023-09-21T06:27:50.845-04:00Comments on Ramblings on the Future of Humanity: Lighting our Space HabitatsStephen D. Coveyhttp://www.blogger.com/profile/12946494775268235149noreply@blogger.comBlogger16125tag:blogger.com,1999:blog-7338070402887246857.post-53655183849620174322022-06-10T10:10:13.534-04:002022-06-10T10:10:13.534-04:00Use a molecular 3 printer. Living things are made ...Use a molecular 3 printer. Living things are made of cells. Cells are just naturally occurring microbots. Nanobots can turn base materials such as dirt water air and electricity directly into food or any other organic compounds. Nanobots are just around the corner and we will probably have them long before space habitats become common. Evolution sucks. Why rely on chlorophyll when we have better alternatives?Sovrinhttps://www.blogger.com/profile/02286343029562427525noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-68096437911545863232017-04-07T22:54:42.585-04:002017-04-07T22:54:42.585-04:00Thanks so much for sharing this awesome info! I am...Thanks so much for sharing this awesome info! I am looking forward to see more posts by you!<br />Led Grow LightAnonymoushttps://www.blogger.com/profile/15149866832560487948noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-90923400355219668862016-09-23T23:23:24.220-04:002016-09-23T23:23:24.220-04:00Thanks so much for sharing this awesome info! I am...Thanks so much for sharing this awesome info! I am looking forward to see more posts by you!<br /><a href="http://ledhydroponics.co.uk/led-grow-lights" rel="nofollow">Led Grow Light</a><br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-51321127159280509472016-04-07T11:14:21.450-04:002016-04-07T11:14:21.450-04:00This comment has been removed by a blog administrator.Darmithttps://www.blogger.com/profile/02866827530184104749noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-48441526267406643832015-07-14T12:27:36.197-04:002015-07-14T12:27:36.197-04:00A recent conversation prompted me to add a couple ...A recent conversation prompted me to add a couple of points to this conversation:<br />1) PAR (Photosynthetically Active Radiation) is not measured precisely, but as a range. Plants absorb a still narrower range of blue light and a narrow range of red light quite efficiently, but neither band absorbs anything of a longer wavelength, and the further short of the optimal wavelengths, the less efficient the energy absorption. IE, yellow light may be absorbed, but any energy in a photon above the red is lost as heat. This means that 72 watts of PAR can actually be produced using less than 72 watts of LEDs. Optimized wavelengths (not white light) can produce that intensity of useful light from just 35 or 40 watts of electrical power.<br />2) The intensity / power is while the plants are illuminated, and for most plants that is NOT 24 hours per day but (except when flowering) is optimally longer than 12 hours per day. If the AVERAGE illumination is 16 hours per day, the average power consumption (over 24 hours) is still less, and it makes a great deal of sense to have several different farm areas with the light/power rotating between them.<br />3) Any light that doesn't get absorbed by a leaf is wasted. Thus it is best to have tall plants grown among ground covers such as wheat, or young seedlings grown between larger, more mature plants. And white or mirrored ceilings, walls, and soil!<br /><br />The bottom line is that it MAY be possible to get by with much less power per person devoted to lighting the farms.Stephen D. Coveyhttps://www.blogger.com/profile/12946494775268235149noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-57596797186958768142015-05-18T17:42:21.157-04:002015-05-18T17:42:21.157-04:00Hmm… I read blogs on a similar topic, but i never ...Hmm… I read blogs on a similar topic, but i never visited your blog. I added it to favorites and i’ll be your constant reader. <a href="http://ledgrowlightsguides.com/" rel="nofollow">Click here</a><br /><br />Ned Polianhttps://www.blogger.com/profile/01187285965170666055noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-24293292312352343642010-03-09T08:13:27.214-05:002010-03-09T08:13:27.214-05:00This comment has been removed by the author.Jenniferhttps://www.blogger.com/profile/13946945748930674745noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-59258062469238518732010-02-14T19:46:49.197-05:002010-02-14T19:46:49.197-05:00Still off topic on lighting (candles?)::
I just w...Still off topic on lighting (candles?)::<br /><br />I just watched "Those Magnificent Men in Their Flying Machines; or, how I flew from London to Paris in 25 hours and 11 minutes" (Phew!)<br />Readers here may know I've liked to equate the similarilties of the opening of America's West to development as it relates to the colonization of space. The Movie is about those years just after Orville and Wilbur and shows how all the nations of the world jumped on the bandwagon and tried to get the edge in aviation. So, now I can add a new simile to my repetoire: the Wright Brothers were like USA and USSR showing spaceflight can be achieved. Now everyone else wants to get involved. And, just as back then, there are dozens of ways of accomplishing that on the drawing boards of people with foresight.<br /><br />One cute clip shows one gentleman's smarts in trying to get off the ground: He dropped a weight from a height and through pullies started off his craft at one g! He translated falling forces to hrizontal pulling much like Aircraft carrier catapults of today, gaining some v's without any other mechanical means. That is similar to my vision of taking advantage of available bouyant forces.<br />If for no other reason, watch the movie for three reason: 1) Benny Hill chase scenes and beach changing booths; 2) Red Skelton's vignets of early man's desire to fly; and. 3) Gert Frobe (Auric from Goldfinger) playing the trumpet without a trumpet, hilarious.michael Hanlonhttps://www.blogger.com/profile/13647065632865927354noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-47674443905408160162010-01-19T06:52:29.852-05:002010-01-19T06:52:29.852-05:00I recognize that quote off of a friends Profile pa...I recognize that quote off of a friends Profile page at Fun Trivia where I play as Mehaul on the team, Flakes. In the profile area we are allowed to put comments and a very nice woman from the UK wrote that very sentence and only that sentence. Her name is Carol and shee goes by the moniker 'Bucknallbabe' It would be quite an enjoyable coinky dink if its her. and the gobledy comes from a bad internation link.michael Hanlonhttps://www.blogger.com/profile/13647065632865927354noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-28910348736996865402010-01-02T00:38:12.126-05:002010-01-02T00:38:12.126-05:00A possible application for a rail launcher could b...A possible application for a rail launcher could be up above the steep part of Earth's gravity well. Slow Accelerative forces there would allow for shooting things to the moom (Where you have to catch them) or.......<br />Use rail launchers to boost to the {xox} velocityies when the asteroid locomotive passes the E & M. Chemicals up out of the wells to the launchers then solar electric for magnetic impulsion and free ride on the rock. One more piece of the puzzle solved (hopefully) Yeah! At the jump off (a scary bit I hadn't addressed) Use the rail to do catching!! Those things do by their nature have a forward and backward direction which is reversible by simply reversing the current and sequencing. The launcher becomes a catcher. So, we need the design for a sledge that will act as a bullet at launch and a baseball into the catch. Even if the aim is off on the catch end, the mag field could act as a directing force, causing correct alignment.<br />Thanks for bringing up the rail launcher again protothad.michael Hanlonhttps://www.blogger.com/profile/13647065632865927354noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-6077891933110945692009-12-30T19:19:58.910-05:002009-12-30T19:19:58.910-05:00Michael,
If you want to email the pics to me dire...Michael,<br /><br />If you want to email the pics to me directly, my address is tdphette (AT) gmail (DOT) com.<br /><br />I agree there is a penalty to be paid in setting up operations on the moon. The question is, how does that compare to resources needed to capture and begin developing an asteroid? Could resources on the moon (i.e. water/fuel/reaction-mass) be lifted from the moon at lower cost than from Earths gravity well? Perhaps a small moon base would be a reasonable stepping stone toward capturing an asteroid. I'm at least interested in studying the issue to see if that could be the case.Unknownhttps://www.blogger.com/profile/13186030032547139824noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-66363230082778584932009-12-30T17:37:17.133-05:002009-12-30T17:37:17.133-05:00Sorry protothad, I couldn't get pix loaded her...Sorry protothad, I couldn't get pix loaded here nor through here and onto your email. Perhaps Stephen can help. The pix were files PICT0087.jpg and PICT0092.jpg.michael Hanlonhttps://www.blogger.com/profile/13647065632865927354noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-6945426743642555772009-12-30T17:32:23.977-05:002009-12-30T17:32:23.977-05:00ProtoThad, according to Heinlein, the Moon Is a Ha...ProtoThad, according to Heinlein, the Moon Is a Harsh Mistress.<br /><br />How to repeatedly travel there economically? The cost of and availability of fuel required to make the first 100 trips to the moon for development would be (pardon the pun) astronomical. It would take 100 trips to have a viable footprint on that body. If you go to Scientific American and search "Planetary Bombardment" and then follow George Musser's report three of the society meeting, you will see that I have outlined a course of action that would meet our needs in the near term. We do not have to wait for 99942 Apophis. There are hundreds of objects that travel along with E&M in a similar orbit just beyond the moon. So, first step is to pass by the moon and grab one of those free locomotives that are out there, bring it back, place it in a orbit around both the E and the M, start Stephen's Colony there too, and use it for free(almost) travel a couple of times a month. that should get that bootstrap laced up. Thanks for burning grey cells on the issue. All inputs are relevant. (Attached are pix of a crude model of the orbit from two angles: Equatorial and 45 deg above the equatorial)<br /><br />Michael Hanlonmichael Hanlonhttps://www.blogger.com/profile/13647065632865927354noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-34852921465969318892009-12-30T15:52:21.863-05:002009-12-30T15:52:21.863-05:00Hi Stephen.
I've been reading your articles r...Hi Stephen.<br /><br />I've been reading your articles regarding capturing Apophis and space colonization in general. Great stuff. I'm just curious if you've put any similar thought or research toward colonization of the moon? It has the disadvantage of a gravity well, but the advantage of not needing initial capture. Perhaps it could be a bootstrap toward eventual asteroid capture? The feasibility would hinge largely on what sort of resourced could be easily mined (recent evidence of water ice is encouraging) and how much effort would be involved in lunar launch facilities (likely a magnetic linear accelerator). Any thoughts?Unknownhttps://www.blogger.com/profile/13186030032547139824noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-84887915061790952252009-12-06T17:24:28.103-05:002009-12-06T17:24:28.103-05:00I did not consider chemical / biological light sou...I did not consider chemical / biological light sources at all. Since we MUST burn (in some way) all of the plant matter back to CO2 and H2O, those sources should be considered for secondary lighting. I'm not aware of any relatively bright chemical/biological sources (excluding combustion), and in any case these are not useful as the primary lighting for plants (simple energy considerations: no perpetual motion machines allowed).<br /><br />Combustion itself I discount because the majority of the energy is emitted as heat which would have to be dissipated. I do see some steampunk fans liking the possibility of a space station illuminated with gas lamps or torches. But I digress....<br /><br />Total system efficiency will likely rule out broadcast energy, since only a fraction of the microwave energy gets converted into light.<br /><br />I had discounted fluorescent lighting because LED lighting is slightly more efficient, and quite a bit more environmentally friendly.<br /><br />I considered sulfur microwave lamps, and they are quite efficient for nearly white light, but they use a local (non-broadcast) microwave source. For plants, they are not as efficient as LEDs since much of their light emission is not absorbed by chlorophyl.<br /><br />Having said all that, I would not claim to be a lighting expert, and others may have worthwhile suggestions. View my post as a starting point. How would YOU feed the plants?Stephen D. Coveyhttps://www.blogger.com/profile/12946494775268235149noreply@blogger.comtag:blogger.com,1999:blog-7338070402887246857.post-25332619609684929752009-12-06T16:21:08.261-05:002009-12-06T16:21:08.261-05:00Stephen, Why dost thou only consider direct solar ...Stephen, Why dost thou only consider direct solar and wired electric LED as lighting sources? May I suggest two other methods which upon consideration may prove more beneficial?<br />1) {Chemical] Are there any steps identifiable in your recycling process which may involve the generation of photons?<br />2) [Radiation] Low level microwaves can cause fluorescent tubes to glow, no wiring needed. Wouldn't this be a low energy equivalent application similar to your solar satellite generation system?michael Hanlonhttps://www.blogger.com/profile/13647065632865927354noreply@blogger.com