What is the hardest wood on the planet?, and does anyone know the chemical composition of wood?
337521
lignum vitae found in the Caribbean\n\nit is called an ironwood\n\ndensity is about 1.4\n\ndon't know the chemical composition of wood... sorry
388152
What is the hardest mineral in the world? I think that is what you are asking???\n\nThat would be diamond which is composed entirely of the element carbon. It shares the same chemical makeup with graphite which tends to be one of the softer minerals (used in your pencil "lead"). However, diamonds have been exposed to extreme heat & pressure for a very long period of time. That makes the difference between diamond & graphite.\n\nSmaller, impure diamonds are crushed & used on the tips of saws to cut & drill through rocks.\n\nOn Moh's Scale of Hardness, Diamond is a 10, the hardest of all minerals. It will cut through all others.
65843
I LOVE hard wood & just had it installed in 2 more rooms in my house.  i paid a lot extra for this specialty fine wood, australian cypress.  put my furniture back on the new floor and BAM!  1 week later, all scratched up.  It's a very soft wood, they said, nothing they can do about it b/c of the fancy pattern.  DON'T Waste YOUR MONEY!  There is nothing like hard wood when it is the original flooring in the original house, but if you have it installed later it is not as durable.\n\nDepends on the room- Kitchen I like laminant.  I like the way carpet feels on your feet though.  I'm really up in the air, aren't I?
695621
I remember this question since it was on the test once:\n\nList the following kinds of matter by how well they conduct heat (from the best to the worst): Wood; air; metal; water.\n\nMy answer was the correct one and it was: Metal; water; wood; air.
398922
I actually helped build one last year as part of a ritual. We did the whole thing in one day. It was a LOT of work. You need many people to help you.\nWe went out into the woods and cut down straight 20-25' saplings that didn't fork. I think 24 trees total were cut. At the base of each an offering was left.  The saplings were then peeled (that was my job and it took forever).\nThere had already been a Temascal in that location so there was already a fire pit dug inside and another larger bonfire outside (for heating rocks). (We set the old Temascal on fire and used it to heat the rocks for the first sweat in the new one.)\nThe saplings have to reach from one side of the circle, up about 4 feet in the center and then back down.  It took two or three big guys to bend and hold each sapling while another held it against the opposite tree at the other end and yet another tied it in place.  This was just repeated until all the saplings were tied. A few of them were also woven a bit to make the structure stronger.\nA couple of smaller saplings were bent over to make the archway for the entrance.\nThe rounded structure was then piled with tarps and blankets until completely covered and no light could get in.  Whatever dragged on the ground was held down with rocks along the edges--old rocks that were "dead" from already being used in the fire.  \nWhew. I'm tired just remembering it.\nI probably left something out. Contact me through my 360 page, my email or my IM for more info.  I can also put you in touch with the gentleman whose house I was at building it.  He has Aztec and native elders there a couple of times a year for rituals and learning and he also travels the world with these elders and goes to Mexico for the Sun Dance every July. So he knows way more than me (and I'm no slouch).\nI think I might have some photos too, somewhere on my hard drive, of us building it.\nSpellcheck not working, sorry for any errors.
183731
This doesn't really belong in Earth Sciences.  Biology or Botany are more specific categories for questions about living matter.  However, I'm in a good mood because it's Friday.  Check the link.
1070119
i think you can get a lot of this info rmation to clerar your doubts\n\nhttp://www.calce.umd.edu/general/Facilities/Hardness_ad_.htm
736173
Diamonds are the hardest natural material; but there are harder man-made materials. \n\nAggregated Diamond Nanorods (ADNR) were developed last year. ADNR can scratch natural diamonds, thus ADNR is harder than natural diamond and consequently more resistant against abrasion. \n\npolyyne, a superhard molecular rod comprised of acetylene units - that resists 40 times more longitudinal compression than a diamond. Ironically, these glittery gems are comprised from the element carbon and have the weakest type of chemical bonds, while polyyne has the strongest bonds in carbon chemistry. \n\nI wasn't able to find a comparison of polyyne and ADNR, but I believe ADNR was developed first and held the title until polyyne was developed a short time later. I'm not positive about the order though. Either one is harder than my head which is saying something.
258414
You can't find one that easily, I'ld advise you to talk to a realy good carpenter whose been a carpenter for more than 10 years and ask him to go through your wood list with you and tell you which types of wood absorb faster or more than the others.
909889
Its like asking would you use HMS VICTORY-and THE CUTTY SARK for firewood...NO,absolutely not.....i'm with finalfront-nancy and weatherman on this,it is part of our history,our heritage,bloody firewood indeed!
977184
Well , dry wood is mostly cellulose and so is paper so if you believe Ray Bradbury that should be "Fahrenheit 451"\n\nhttp://www.amazon.com/Fahrenheit-451-Ray-Bradbury/dp/0345342968
523573
Hmmm...guess you haven't seen an answer you like...after all this has been asked, day in and day out for infinity.  In case you missed all the other answers, here they are:\nhttp://answers.yahoo.com/search/search_result;_ylt=AiCtOb_ngGYo0QUA3ujnTZfpy6IX?p=how+much+wood
861565
1.  Diamond is the hardest known natural material and one of the two best known forms (or allotropes) of carbon, whose hardness and high dispersion of light make it useful for industrial applications and jewelry.\n\n2.  Covalent bonds.
654326
im pretty sure (NOT certain) that heartwood is the TOTAL centre of a tree's wood. and sapwood is The wood near the outside of the tree. Usually lighter in color than heartwood.\n OR if ure REALLY scientific i would describe it like this:\n\nThe outer growth rings which are physiologically active part of a living tree. Sapwood is usually lighter than heartwood, and lacks decay resistance.
447021
From the ref. (see table 22), Douglas fir at 15% humidity has a weight per foot of 0.233 lb * cross-sectional area in square inches. (Douglas fir happens to be the only wood the ref. lists with a Dense Select Structure rating.)
211742
Undoubtedly,it was wood from a tree from\nthe area where they were.  The Bible does\nnot tell us what kind of wood was used.
10944
No, Diamond is the hardest material on earth, and carborundum is a diamond stimulant (tries to simulate the appearance of diamond).\n\nIn fact, diamond is three times harder than carborundum.\n\nCarborundum, a trademark name for Silicon carbide manufactured as an abrasive, is a ceramic compound of silicon and carbon (also known as moissanite).\n\n"Most silicon carbide is man-made for use as an abrasive (when it is often known by the trademark carborundum), or more recently as a semiconductor and moissanite gemstones. The simplest manufacturing process is to combine sand and carbon at a high temperature, between 1600 °C and 2500 °C."