Difference Between Hardwoods and Softwoods? скачать в хорошем качестве

Difference Between Hardwoods and Softwoods?

Generally speaking, wood is often put into one of two categories- hardwood and softwood. But what exactly makes a given piece of wood qualify as either hard or soft and how did those definitions come about? Perhaps the most important and misunderstood aspect of defining wood as either hard or soft is that it has absolutely nothing to do with the individual qualities of the harvested wood itself. The most famous and oft used example of this concept is that of balsa wood which, despite being literally one of the least dense (and hence softest) woods of all, is technically classified as hardwood. Likewise, the wood of the yew tree, which is classified as being a softwood, is a great deal tougher than many hardwoods including several types of oak. So what's going on here? Well, the basic answer is that classifying a wood as either hard or soft is entirely dependent on the seeds produced by the tree it comes from. If a tree's seeds have some sort of covering when they fall from the tree, be it in the form of a shell or fruit, then the wood of that tree will be classified as hardwood. On the other hand, if a tree produces seeds that are simply left to the elements when they fall to the ground, then the wood harvested from it will be classified as a softwood. The technical term for a tree that produces seeds sans any sort of covering is "gymnosperm", a term derived from Ancient Greek which literally translates to "naked seed". In regards the trees that produce covered seeds, the technical term is "angiosperm", a word that is again taken from Ancient Greek and roughly translates to "vessel seed" or more aptly, "seeds contained in a protective vessel". As previously mentioned, angiosperms include any tree that produces fruit as well as any tree that produces seeds protected by some sort of shell, like an acorn. This is an abridged version of a video on our channel TodayIFoundOut which you can check out and subscribe to here:    / @todayifoundout