Archive for December, 2009

Biomimetics – Drawing Inspiration From The Design In Living Things

December 30th, 2009



There is instruction for you in cattle. From the contents of their bellies, from between the dung and blood, We give you pure milk to drink, easy for drinkers to swallow. (Qur’an, 16:66)

And there is certainly a lesson for you in your livestock. We give you to drink from what is in their bellies and there are many ways in which you benefit from them, and some of them you eat; and you are conveyed on them and on ships as well. (Qur’an, 23:21-22)

Before scientists and research and development experts embark on new projects, they usually look for models in living things and imitate their systems and designs. In other words, they see and study the designs created in nature by Allah and, inspired by these, go on to develop their own new technologies.

This approach has given birth to biometrics, a new branch of science that seeks to imitate living things. In recent times, this branch of science has come to be widely applied in the world of technology. The use of the word “ibratan,” (to learn from, advice, importance, important thing, or model) in the above verses is most wise in this regard.

Biomimetics refers to all of the substances, equipment, mechanisms, and systems that people produce in order to imitate the systems present in nature. The scientific community currently feels a great need for the use of such equipment, particularly in the fields of nanotechnology, robot technology, artificial intelligence, medicine, and the military.

Biomimicry was first put forward by Janine M. Benyus, a writer and scientific observer from Montana. This concept was later analysed by many other people and began to find applications. Some of the comments made regarding biomimicry are as follows:

The theme of “biomimicry” is that we have much to learn from the natural world, as model, measure, and mentor. What these researchers have in common is a reverence for natural designs, and the inspiration to use them to solve human problems. 1

David Oakey, product strategist for Interface Inc., a company that uses nature to increasing product quality and productivity, says:

Nature is my mentor for business and design, a model for the way of life. Nature’s system has worked for millions of years … Biomimicry is a way of learning from nature. 2

Scientists who began to favour this rapidly spreading idea accelerated their studies by using nature’s incomparable and flawless designs as models. These designs represent models for technological research, for they provide the maximum productivity for the least amount of materials and energy, and are self-maintaining, environmentally friendly, silent, aesthetically attractive, resistant, and long-lasting. The High Country News newspaper described biomimetics as “a scientific movement” and made the following comment:

By using natural systems as models, we can create technologies that are more sustainable than those in use today. 3

Janine M. Benyus, who believed that models in nature should be imitated, gave the following examples in her book, Biomimicry: Innovation Inspired by Nature (Perennial: 2002):

• Hummingbirds cross the Gulf of Mexico on less than 3 grams (one tenth of an ounce) of fuel,

• Dragonflies outmanoeuvre our best helicopters,

• Heating and air-conditioning systems in termite mounds are superior in terms of equipment and energy consumption to those made by human beings,

• A bat’s high-frequency transmitter is more efficient and sensitive than our own radar systems,

• Light-emitting algae combine various chemicals to illuminate their bodies,

• Arctic fish and frogs freeze solid and then spring to life, having protected their organs from ice damage,

• Chameleons and cuttlefish change the pattern of their skin to blend instantly with their surroundings,

• Bees, turtles, and birds navigate without maps, and

• Whales and penguins dive without scuba gear.

These astonishing mechanisms and designs in nature, of which we have cited only a few, have the potential to enrich technology in a wide range of fields. This potential is becoming ever more obvious as our accumulated knowledge and technological means increase.

All animals possess many features that amaze human beings. Some have the ideal hydrodynamic shape that allows them to move through water, and others employ senses that appear very foreign to us. Most of these are features that researchers have encountered for the first time, or, rather, that they have only recently discovered. On occasion, it is necessary to bring together prominent scientists from such fields as computer technology, mechanical engineering, electronics, mathematics, physics, chemistry, and biology in order to imitate just one feature of a living thing.

Scientists are amazed when confronted with the incomparable structures and systems they are discovering with every passing day, and use that amazement to inspire themselves to produce new technologies for humanity’s benefit. Realising that the existing perfect systems and extraordinary techniques applied in nature are far superior to their own knowledge and intellect, they became aware of these matchless solutions to existing problems and are now resorting to the designs in nature to resolve problems that have eluded them for years. As a result, they will perhaps achieve success in a very short time. Moreover, by imitating nature, scientists are making very important gains with regard to time and labour and also to the targeted use of material resources.

Today we see the developing technology gradually discovering the miracles of creation and using the extraordinary designs in living things, as in the case of biomimetics, in the service of humanity. Benyus has stated that “‘Doing it nature’s way’ has the potential to change the way we grow food, make materials, harness energy, heal ourselves, store information, and conduct business.” 4 The following are just a few of the many scientific papers to have considered such subjects:

“Science is Imitating Nature,” 5

“Life’s Lessons in Design,” 6

“Biomimicry: Secrets Hiding in Plain Sight,” 7

“Biomimicry: Innovation Inspired by Nature,” 8

“Biomimicry: Genius That Surrounds Us,” 9

“Biomimetics: Creating Materials from Nature’s Blueprints,” 10 and

“Engineers Ask Nature for Design Advice.” 11

In the nineteenth century, nature was imitated only in aesthetic terms. Artists and architects of that time were influenced by nature and used examples of the structures’ external appearances in their works. Yet the realisation of nature’s extraordinary designs and that these could be used to benefit human beings only began in the twentieth century with the study of natural mechanisms at the molecular level. Scientists today are learning from living things, as revealed in the Qur’an 1,400 years ago.

Under the pen name of Harun Yahya, Adnan Oktar has written some 250 works. His books contain a total of 46,000 pages and 31,500 illustrations. Of these books, 7,000 pages and 6,000 illustrations deal with the collapse of the Theory of Evolution. You can read, free of charge, all the books Adnan Oktar has written under the pen name Harun Yahya on these websites http://www.harunyahya.com

By: Harun Yahya

Laser Wood Cutting

December 30th, 2009



Ever since its introduction in the mid 1900’s the laser has come a long way. From light shows to scientific experiments, this optical phenomenon has been used in a variety of avenues. Today, lasers are being used in the manufacture process as cutting equipment.

Laser cutting devices direct a high-powered laser beam at the required surface. This makes the surface burn, melt or vaporize, giving the end product a high quality finish. Laser cutting is used on a variety of surfaces such as plastic, glass, metal and so on. Wood is another popular surface for laser cutting.

Most laser cutters are powered by CO2. Wood has a high absorption of the 10.6-micron wavelength of CO2. The cutting takes place as a result of a chemical degradation process, where wood fiber is burned away and removed under the pressure of an assist gas. Due to this, the edges of wood articles cut by the laser process appear charred, but there is negligible surface discoloration.

There are several factors that influence the ability of a laser to cut wood. Firstly, the characteristic of the laser beam should be taken into consideration. These include power, mode, polarization and stability. Usually, lasers used for cutting wood range between 200 to 800 watts. However, depending on the application and the intricacy of work, the beam density maybe varied. The equipment and processing variables such as the design of the beam, the feed speed and the type of gas used also greatly affect the wood cutting process. Lastly, the properties of the work piece also affect the efficiency of the laser cutting process. For example, dry lightweight woods are easy to cut, while dense moisture laden woods require more effort.

The laser cutting process scores several advantages over the conventional wood cutting methods. The traditional saw cutting method cannot match the level of accuracy and intricacy achieved by laser cutting. Moreover, the durability of the end product is greater and wastage of materials is minimized. However, with each machine accompanied by a cost of several thousand dollars, it is not an affordable option for everyone.

By: Thomas Morva

What Are the Limits in Swimming and Track and Field?

December 27th, 2009



I had trouble figuring out how to begin this article and also how to keep this article from being too technical, dry, and intellectually-based. After all, most people follow sports because they are fun and are a pleasant diversion from work and other stressful things in life. And judging from comments made by sports fans on sports radio talk shows and on sports sites on the internet, apparently not many intellectuals are rabid sports fans. That being said, I find the topic of humans’ capabilities and possible limits in athletic accomplishments to be fascinating and I hope I can make this interesting for you. Maybe not as exhilarating as watching Usain Bolt run (whose performance at the 2008 Olympics inspired me to write this article), but interesting none the less.

For purposes of our discussion (for simplicity’s sake since the concept is the same for longer distances or any distance in swimming), I am going to deal with the men’s 100 meter dash and assuming the runner did/does not use steroids. Also, I am going to assume that human beings will be around forever, even though — for various reasons — this seems unlikely. At the heart of this discussion is this paradox: while it seems safe to conclude that humans will never be able to run the 100 meter dash in 1/100 of a second (to give you an extreme example), it also seems safe to conclude to that no matter the world record time in the 100 meter dash (currently 9.69 seconds), someone will always find a way to lower it by 1/100 or 1/1000 of a second.

I do not pretend to have an answer for you, which, of course, is why it is a paradox and why I find it fascinating. At some point, you would think, the world record would get so low and at the same time, we would have exhausted all the ways to improve an athlete’s performance (nutrition, training (physical and mental), increased competition, interbreeding of athletes, equipment, technique, and scientific (blood volume and muscle-fiber), that there would be no way we could lower it anymore. Then a once-every-generation super athlete such as Bolt comes around and under ideal conditions, he lowers it by 1/100 or 1/1000 of second. Or, some genius, does find a new way to improve an athlete’s performance. Either way, we are back to were we started. Hmmm.

The world record in the men’s 100 meter dash was 10.6 seconds in 1912 and and almost 100 years later it almost a full second lower. (In fact, it might be a full second lower right now if Bolt had not started showboating at 80 meters at the 2008 Olympics.) That is about 1/10 of a second per decade, however, the progression has been slower since 1960 when the world record was set at 10.0. (After 1976, the IAAF required fully automatic timing to the hundredth of a second for events 400 metres and under when submitted for record consideration.) The great Jesse Owens set the world record in 1936 at 10.2 seconds and it was not broken for 20 years (although it might have been broken during that time period if they had the automatic timing to 1/00 of a second — we will never know). I just point that out because during that time period people might have thought runners times were at a plateau, but we know now that they were not.

In fact, when Michael Johnson shattered the world record in 1992 by .4 of a second (19.32 previously 19.72), he demonstrated that substantial improvements are still possible even in the sprints. And with Bolt, who broke Johnson’s record at the 2008 Olympics (19.30 into a .9 mile per hour head wind) on the eve of his 22nd birthday, more substantial improvements seem likely in both the 100 and 200 meters. Not to my extreme example time of 1/100 of a second, however, I still cannot help thinking there will always be a way to lower the 100 meter record (or any longer distance, of course) by 1/00 or 1/000 of a second. Which, means, of course, we are right back to were we started. And I find it fascinating — I hope you at least find it interesting.

By: Mark Hauser