How to schedule text messages in iPhone/iPad

At times we may be busy. We forget something which is very important like texting your girlfriend enquiring about her,wishing a friend on his birthday etc.We are just a few steps away to know how to schedule our messages on iOS devices.

The Stock messages app is great but it doesn't offer a way to schedule the messages.

After a long wait,here comes The DELAYD app.

The functionality of this app comes with a no-nonsense approach.Many apps come with a feature that requires the user to manually send the messages when the notification appears.

This is where the Delayd app excels as it offers the ability to automatically send the messages with the user to do nothing.The user requires to set up the date time and message and the app proceeds its way.Once the message is delivered,you will be notified about it!

I am sure the time you?ve spent on reading this turns out to be useful.Any queries can be posted in the comment box.Queries will not go unanswered.

If the article was helpful don?t forget to share the same.Your share may be useful for many others out there. Thankyou!

Planet Spotted Forming Around Binary Stars

A crescent-shaped gap has been observed in the gas around a pair of stars. The astronomers who discovered it believe the missing material is coalescing into a planet, providing an unprecedented opportunity to understand how planet formation happens.

Science fiction loves the idea of planets with two suns, from Tatooine, to Magrathea. Until recently, however, it was thought that such planets would be rare, existing only where the stars were so close they could be circled like a single object, or so distant that one would be just a bright star.

Yet we now know that planets exist in a wide range of binary systems. New work presented at the American Association for the Advancement of Science meeting on Saturday may help explain how this occurs. The study was conducted with the Atacama Large Millimeter/submillimeter Array (ALMA), the collection of radio telescopes that is revolutionizing many areas of astronomy.

"This binary system has long been known to harbor a planet-forming corona of dust and gas," said Dr. Andrea Isella of Rice University in a statement. "The new ALMA images reveal previously unseen details about the physical processes that regulate the formation of planets around this and perhaps many other binary systems."

The system Isella is referring to, HD 142527, is 450 light-years away and is part of the Scorpius-Centaurus association of young stars that formed together but are now drifting apart. These stars have proven a rich resource for astronomers studying the process of planetary formation.

Where most protoplanetary disks are symmetric, HD 142527 has a crescent-shaped dust cloud, thought to be caused by the complex gravitational field of two stars in orbit around each other. The primary star has more than twice the Sun's mass. The secondary, which orbits at a distance greater than Saturn's from the Sun, has a third the mass of the Sun, making it hundreds of times fainter. Planets orbiting either star may be disrupted by the other's pull.

The lack of gasses within the reddish arc is probably the result of carbon monoxide – the dominant gas elsewhere in the system – freezing onto dust grains.

"The temperature is so low that the gas turns into ice and sticks to the grains," Isella said in anotherstatement. "This is important for planet formation. The solid dust needs to stick together to form a bigger body that will eventually attract more rock and gas gravitationally.

"If you try to smash rocks together, they don't stick together very well," he said. "If you smash snowballs together, they do. So when you form an ice mantle around the grains, you increase their capability to stick together."

"Where the red in the image is brightest, the density of the dust peaks," Isella said. "And where we find a dense clump of dust, the carbon monoxide molecules disappear."

ALMA has previously spotted what may be a planet in the formation of a triple star system, but this is a far clearer example of planetary formation around multiple suns.

Fish Feel With Their Fins

Fish fins are touch sensors, and they work in a way that's similar to our fingertips. According to new findings published in Proceedings of the Royal Society B, the pectoral fins located behind the gills of one catfish species have neurons and cell structures that can sense light pressure and motion.

The paired pectoral fins of fish (imagine Nemo's lucky fin) are homologous to our arms and the forelimbs of other four-legged animals. They help propel and balance the fish as they swim, and they also help flying fish fly and mudskippers crawl. Seems pretty obvious that fish would use their fins for feeling around, but little is actually known about the sensory roles of fins. Bottom-dwelling fishes in particular often come into contact with the substrate, and feedback from the floor, objects, and movement of the water could modulate behaviors related to their locomotion, orientation, and finding food. It would be especially helpful for those with nocturnal lifestyles and those living in low-visibility environments or the deep sea.

To investigate, University of Chicago's Adam Hardy and colleagues measured the activity of nerve fibers in the pectoral fins of the catfish Pimelodus pictus, a small fish that lives at the muddy bottom of the Amazon River. Their pectoral fins contain a hardened, serrated spine along the edges for protection, and because their fins don't generate a propulsive force, they're likely not used for locomotion. While it seems their fins serve a defensive role, they still retain the soft, bony rays connected by a membrane that's typical of all ray-finned fishes - likely as touch sensors.

Using the blunt head of a pin and the eye of a needle, the researchers applied a variety of different stimuli to these highly innervated pectoral fins, including a light surface brushing. The neurons responded to touch and relayed information about pressure and motion to the brain. And the ray fin nerves also respond to bending of the rays.

The researchers also discovered the presence of cells that resemble what's called Merkel cells - which are associated with nerve endings in mammal skin and are essential for touch sensation. These findings, Hardy explains in a statement, suggest that the underlying sensory morphology may be evolutionarily conserved.

How To Build A Plane That Never Needs To Land

The British military is reportedly set to purchase two planes that can fly for months on end without needing to land. These large solar-powered "Zephyr" drones would likely be sent to carry out long-term surveillance missions and could constantly monitor an area with high-quality imagery. They could also be used to provide mobile and internet communication signals in remote areas, to support ground missions, and even conduct long-term research projects.

Alongside efforts by Facebook and Google to develop similar technology, the launch of the Zephyr aircraft by European aerospace firm Airbus could mark the start of a new era of continuous flight. What made this possible was a series of breakthroughs in lightweight materials, solar power and batteries, and autonomous navigation. These advances have come together to create planes that can fly day and night without intervention, potentially for months at a time.

Self-guided and self-powered planes started with NASA, which began working with the team behind the the manned Solar Challenger plane that flew across the English Channel in 1981. By 1994, NASA'sPathfinder aircraft had demonstrated solar panels were able to power aircraft to high altitude. But the planes still needed a power source at night. Batteries at the time were too heavy so the NASA engineers turned to hydrogen fuel cells, which they integrated into their Helios prototype, aiming to demonstrate round-the-clock operation.

The efficiency of the solar panels used on the planes today is not significantly different from those used for the first continuous flights. What's improved considerably are the weight and the robustness of the panels, as well as the cost. In fact, the Zephyr mark 8 uses amorphous silicon cells that are actually less efficient than the mono-crystalline cells used by the SoLong craft ten years ago. But because today's cells are lighter and more flexible, they contribute to a more reliable structure that needs less power to propel it.

Another significant development that has helped make these planes viable is the improvement in energy storage technologies, enabling them to save power generated by the sun in the day for use at night. Modern lithium sulphur batteries are able to store 60% more energy per kilogramme than the lithium polymer batteries available ten years ago. About 40% of the weight of the Zephyr 8 is the battery array. This means that improving the energy density (how much energy it can store without adding to weight or volume) can have a dramatic impact on the performance of the whole craft, ultimately enabling it to carry more equipment.

Other advances include the artificial intelligence that guides the craft, the sensors that gather data on the surrounding and continually changing weather, and the carbon fibre composites used to build the plane. Although the raw materials used are the same, new manufacturing processes that better control the direction of the carbon fibres and use less plastic resin to hold them together have made the overall structure lighter.

The result of these technologies is a plane that can do things previously only possible with satellites, but that can fly continuously over one area rather than having to orbit the entire globe. Although the UK willreportedly pay £10.5m for its two Zephyrs, this is a fraction of the hundreds of millions needed to launch and run a satellite. Plus, unlike with satellites, it's possible to land and repair the craft if something goes wrong.

The challenge now for the engineers working on solar-powered drones is to increase the amount of power they can collect and store and validate how long the batteries can stand constant charging and discharging. This will enable them to provide higher bandwidth communication and sustain flights in higher latitudes and during the winter months, when the incoming solar radiation is weaker. If this can be achieved, it could allow the likes of Google and Facebook to provide internet services not through cables but via drones.

Richard Cochrane, Director of Education and Senior Lecturer in Renewable Energy, University of Exeter

This article was originally published on The Conversation. Read the original article.