Like most people, you want the ultimate old and new clocks & components that you can certainly buy, whilst not compensating overpriced pricing. While scouting around for a fabulous old and new clock, there exists easily never any cause for you to pay major money, whilst now there are typically 1000s of old and new clocks & components at great discount rates on eBay, the most respected online shopping mall throughout the earth. This specific webpage is certified by eBay to be able to support you come across the perfect old and new clock you are seeking for at an unequalled bargain. If you don't discover the old and new clock you are scouting around for down below, try putting in a specific name or model in the Search box at your right.
Early in the 17th Century many years just before clocks were being carved in the Black Forest, Philipp Hainhofer (21 July 1578 - 1647)a merchant, banker, diplomat and art collector in Augsburg, wrote about a cuckoo clock which was owned by Prince Elector August von Sachsen. This is the first recognized description of a Cuckoo Clock. At that time Europe was in the middle of a weather phenomenon called the "Little Ice Age" which brought particularly cold temperatures in the winter. Athanasius Kircher was a 17th century German Jesuit scholar (1650). In his handbook on music Athanasiius described a mechanical organ that had numerous automated figures such as a mechanical cuckoo. This book, was the very first to document in words and photos the mechanical workings of the cuckoo clock. It goes on to describe how the mechanical cuckoo can automatically open it is beak although at the exact same time the cuckoo can move both the wings and also the tail. As the beak opens and closes 1 hears the call of the cuckoo. Inside the clock are two organ pipes which are responsible for making the call of the cuckoo. "Time is gold" as the saying goes and so are clocks like the Movement Not Parts you may see on this page. The value of time imprinted on the clocks developed.
The first version of the famous clock as we know it right now was produced about 1738 by Franz Anton Ketterer, from the village of Sch?nwald near Triberg. It truly is thought that he was inspired by both the cry of a rooster along with other clocks decorated with scenes of farm life, but found the sound of the cuckoo bird less difficult to produce than the rooster's crow. Germany already had a lengthy history of fine clock-making just before the Cuckoo Clock came on the scene. Artisans had been producing ornate clocks entirely by hand, which includes all of the gears and moving parts inside as well as the casing and decorations. The first Cuckoo Clock and those following in the early years of production were also produced entirely by hand. Later, the use of metal parts and the incorporation of the pendulum provided far more accurate timekeeping. A pendulum clock has a weight at the end that, when swinging, swings back and forth at the same rate all the time and moves the gears continuously. Small weights hanging from under the clock, usually inside the shape of pinecones on a Cuckoo Clock, are pulled on a typical basis to continue the pendulum's swing and maintain accurate time. The mechanism that makes the clock go "coo-coo" is still utilized right now: bellows that push air by way of tiny pipes, similar to how a pipe organ works. "Time is gold" as the saying goes and so are clocks like the Movement Not Parts you will see on this page. The value of time imprinted on the clocks created.
What is a concentration gradient (osmosis)?
This is for GCSE Biology, this is what I know:
Osmosis is the net movement of water from a high concentration to a low concentration along/ down (?) a concentration gradient through a partially permeable membrane.
I understand everything apart from the the 'net movement' part and the 'concentration gradient' part... could someone please explain these to me? (I am not sure if the above is right, that is just what I think it probably is, but without understanding the terms I can't be sure).
Thanks.
Molecular diffusion, often called simply diffusion, is a net transport of molecules from a region of higher concentration to one of lower concentration by random molecular motion. The result of diffusion is a gradual mixing of material. In a phase with uniform temperature, absent external net forces acting on the particles, the diffusion process will eventually result in complete mixing or a state of equilibrium.
Molecular diffusion is typically described mathematically using Fick's laws.
So what you've said is true.
all the "concentration gradient" means is that if the concentration of water molecules is greater on the inside of the cell than on the outside, then the net movement of water will go to the outside of the cell until there is an equalibrium (same amount of water molecules on the inside as on the outside [said to be isotonic]), this could be dangerous to the cell (look up crenation, you'll see what i mean) to look it up just go to wikipedia and do a search"crenation"
all of this stuff is really pretty basic once you learn the concepts and terminology
but biology has its own language just like anything else
so the more you read (study), the more familiar you will be with the terminology
and the better you'll do when it comes time to take the test
water molecules (or any molecules) will always move from where they are highly concentrated to where they are less concentrated, this is because molecules are always in motion (random motion) and they try to get as far apart from each other as they can so that they're not bumpin' into each other
On most Cuckoo Clocks, when the movement on the inside strikes to mark the hour, a cuckoo bird appears out of a door and returns behind the door when the gong or other sound stops. Some clocks may possibly have other animals, trains or folks that appear to mark the time. Producing Cuckoo Clocks became such a preferred industry that craftsmen would try to outdo each other by developing a a lot more lovely and elaborate clock than their neighbor. Not just the mechanisms of the clocks became far more sophisticated, moving from wood to metal, but also the decorations, which progressed from watercolor paints and square faces to elaborately carved faces painted in wealthy, bold colors.
At the end of the eighteenth century and up to the middle of the nineteenth century Cuckoo Clocks basically consisted of a a flat wooden face with the workings of the clock attached behind the face. On leading of the face of the clock was location a semi circular piece of wood which was adorned with stunning designs and which housed the cuckoo bird. Throughout the cold winter nights the clock makers would function producing their wonderful highly decorated clocks. Inside the Spring the clocks had been then sold by door to door by clock peddlers who carried the Cuckoo Clocks by means of a rack which was carried on their backs. Entire families would work in their cottages making the Cuckoo Clocks and each and every loved ones member had the expertise of creating particular pieces of the clock which was then assembled by yet a further family members member. Styles of Cuckoo Clocks: There are numerous styles of Cuckoo Clocks, essentially the most familiar being the Swiss Chalet Style which evolved about the end of the nineteenth century. Essentially the most fundamental sort of Cuckoo Clock will be the 1 Day Cuckoo Clock which wants to be wound one time every day. Next there's the Eight Day Cuckoo Clock which wants to be wound only one time per week. Every of these clocks has a musical version together with the addition of a Swiss music box. Animated figures now are added including a man sawing wood, men drinking beer and even a water wheel turning. Themes of the Cuckoo Clock consist of deer heads, dead and live animals, leaves and birds. Later versions now incorporate a Quartz Cuckoo Clock which doesn't must be wound and which has the recorded sound of an actual Cuckoo. The production center of the Cuckoo Clock is still the Black Forest of Germany, and the Cuckoo Clock is still a preferred of the tourist visiting there. May possibly stories such as including those for children have been written about Cuckoo Clocks and like the Cuckoo Clocks themselves they stay favorite to this day.