Biomimetics is the new science of imitating nature – but why not save a step, and just copy the design directly? That’s what Aussie and British researchers did. They wanted a self-cleaning surface that could repel moisture and dust, so they made a template of an insect wing. And why not? “Insects are incredible nanotechnologists,” reported Science Daily. Their wings are self-cleaning, frictionless and super-water-repellant. Insect wings have these properties due to their properties at the scale of billionths of a meter. “For instance, some wings are superhydrophobic, due to a clever combination of natural chemistry and their detailed structure at the nanoscopic scale,” the article said. “This means that the wing cannot become wet, the tiniest droplet of water is instantly repelled. Likewise, other insect wing surfaces are almost frictionless, so that any tiny dust particles that might stick are sloughed away with minimal force.” That’s a dream surface for many human applications. Instead of having to invent a surface by imitation, the research team is developing a way to use the wing as a natural template to cast a polymer surface that duplicates the exact structure of the wing onto silicone gel. “One of the advantages of this approach is that no prior ‘design’ of the surface of the material is needed and so the team can exploit the enormous diversity of surface types from different insects and so produce materials with specific characteristics.” Evolution was only mentioned once in the opening paragraph: “The surfaces of many insect wings have evolved properties materials scientists only dream of for their creations.” Evolution and creation sometimes make strange bedfellows.Next time you see a tiny little gnat flying around, take a better look at it. Would you have thought that its wings have such amazing properties that top researchers want to copy it? Who trained those little insects to be “incredible nanotechnologists”? Good grief, evolution has nothing to do with it. This is design from beginning to end. It’s design in the tiniest of flying creatures that is so good, materials scientists “dream of their creations.” Humans create; so does their Creator. Imitation is the sincerest form of flattery, but plagiarism is copying some other Designer’s work without giving credit.Program Note: this is the 600th entry in Creation-Evolution Headlines tagged with “Amazing Facts.” Follow the Chain Links back through the past 9 years and you will find a wealth of incredible facts about design in nature. That’s plenty of material to leave Charlie perpetually sick, wondering how his hopeless little speculation will ever explain them. He gets sicker listening to the joyful sound of Christians across town singing with more and more gusto, Praise to the Lord, the Almighty, the King of Creation.(Visited 12 times, 1 visits today)FacebookTwitterPinterestSave分享0
18 April 2008Switching from conventional geysers to solar water heaters is not only a response to the current energy crisis affecting South Africa, but also a sustainable long-term investment for residents, says Minerals and Energy Minister Buyelwa Sonjica.“The use of solar energy, which is a renewable energy source, will assist us in reducing the load of pressure on the national electricity grid while increasing energy supply mix as a renewable source of energy,” Sonjica said at the launch of the kwaNokuthula Solar Water Project in Riversdale in the Western Cape on Thursday.Solar water heating is one of the key energy response measures highlighted in the government’s national electricity response plan that was launched in January.Sonjica said that through the national response plan, the government had acknowledged the importance of solar energy and solar water heating not only as a means of demand side management but also as an energy efficiency measure.In addition, the development of solar industry in the country had important economic and job creation potential.“It is important that we develop this project to ensure increased job creation through solar water heating as we need to ensure that these appliances are in the long run manufactured and produced locally,” she said. “This will also create sustainable jobs throughout the value chain and reduce the cost of these technologies.”During the launch, Sonjica acknowledged the Western Cape provincial government for establishing a solar water heating training academy, which is expected to take its first batch of 240 trainees soon.Energy efficiency exhibitionOn Wednesday, the Gauteng Department of Local Government also announced plans to host a three-day Energy Efficiency Product and Information Exhibition as part of the national campaign to save electricity.The exhibition, scheduled to take place from 6 to 8 June at the Nasrec Expo Centre to the south of Johannesburg, will bring together a range of products that households, business, institutions and general public can use in order to contribute to the national energy saving campaign.“Our objective is that by the end of this year we will have an extensive energy efficiency network reaching out to every ward, resident, institution, businesses and non-government organisation,” said Provincial Local Government Minister Qedani Mahlangu.The display is aimed at providing a platform for all services providers of energy efficient products such as solar powered roofing insulation system, energy saving light bulbs, ripple control geysers to geyser blankets to showcase and explain their products to the public.Mahlangu said the exhibition would incorporate four briefing sessions aimed at ensuring that Gauteng residents became active in energy efficiency campaigns, with every sector of the province being organised to play a meaningful role.Source: BuaNews
Here’s everything you need to know about streaming your content on YouTube Live.If you’ve been tasked with creating live content by a client (or it’s just something you’re just interested in), then YouTube Live is going to be a great platform for you. Let’s take a look at how to take your content from prerecorded to live in four simple steps.1. Have a ConceptObviously, you need to have a concept. This concept needs to be tweaked and developed before you ever start rolling —remember, you don’t have the luxury of filming multiple takes when you’re going live. Develop an outline for your content and script out as much as you can. Once you’ve locked down your on and off-screen talent, get into blocking and rehearsal.2. Create a ChannelIf you’re going to create a YouTube Live stream, you’ll need to have a YouTube Channel. This is a simple process that can be completed in very little time.3. Enable Live for Your ChannelNext up, you’ll need to enable live streaming for your channel. This is a very quick and easy process that can be completed in YouTube’s Creator Studio. In the Creator Studio, look on the left-hand side of the panel to find the live streaming option. Once you click on the link, you’ll be presented with a Get Started button that will take you through the steps.4. Instant or Scheduled StreamOnce you activate live streaming, you can decide how you want to go live. If your cast and crew are in place and you’re ready to go, well, then just start streaming. If you’re still getting prepared and would rather schedule a stream, head back over to the Creator Studio panel, select Events, and schedule your live stream with ease.Got any tips for people working toward their first live stream? Share them in the comments below.
VANCOUVER – Police say a pedestrian was seriously injured Friday morning in downtown Vancouver after a carjacking that ended with the arrest of a suspect and multiple collisions.Const. Jason Doucette says police received a call at about 8:40 a.m. from a motorist who reported being pepper sprayed in a downtown parking lot by someone who took off with his car.Doucette says the suspect drove erratically through the downtown, causing numerous collisions and also striking the pedestrian, who was rushed to hospital.Police say the pedestrian’s injuries are serious but not life-threatening.After the car came to a stop, Doucette says the carjacker jumped out of the vehicle and was chased by construction workers, who were also pepper sprayed.Doucette says the group was able to hold the man until police arrived.He says a 27-year-old man has been arrested and several charges will be recommended against him.Police say the car was stolen at Cambie and Pender streets and ended up in the area of West Georgia and Hamilton, about three blocks away.