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Clothing made from a reversible fabric could warm or cool wearers and keep them comfortable, bringing down buildings’ energy costs.

By Vicky Stein

Stanford researchers have developed a reversible fabric that, without expending effort or energy, keeps skin a comfortable temperature whatever the weather.

A new textile made from a reversible fabric could warm or cool wearers and keep them comfortable. Two layers of material with different abilities to release heat energy are stacked together and sandwiched between layers of polyethylene. (Image credit: Yi Cui Group)

In a paper published Nov. 10 in Science Advances , a team led by Yi Cui , professor of materials science and engineering, created a double-sided fabric based on the same material as everyday kitchen wrap. Their fabric can either warm or cool the wearer, depending which side faces out.

This project came out of Cui’s interest in energy efficiency and his expertise in manipulating nanoscale materials. He thought if people could be more comfortable in a range of temperatures, they could save energy on air conditioning and central heating.

“Why do you need to cool and heat the whole building? Why don’t you cool and heat individual people?” asked Cui.

Thirteen percent of all of the energy consumed in the United States is simply dedicated to indoor temperature control. But for every 1 degree Celsius (1.8 degrees Fahrenheit) that a thermostat is turned down, a building can save a whopping 10 percent of its heating energy, and the reverse is true for cooling. Adjusting temperature controls by just a few degrees has major effects on energy consumption.

Our bodies have many ways of controlling our temperature. When it’s cold, the hairs in our skin stand out to trap warm air. Eventually, we may start shivering to produce more radiant heat in our muscles. When it’s hot, we release heat as infrared radiation from our skin, and if we’re still warm we start to sweat. Water evaporating away from our bodies carries a large amount of heat with it. But those mechanisms only help within a few degrees. Get outside the temperature range to which our bodies can adapt, and we reach for the dial on the heating or air conditioning.

In 2016 the team announced a first step toward a solution: fabric that allowed the body’s heat to pass through, cooling the skin. Although they were inspired by transparent, water-impermeable kitchen wrap, their new material was opaque, breathable and retained its ability to shuttle infrared radiation away from the body. Compared to a cotton sample, their fabric kept artificial skin 2 C cooler in a laboratory test – possibly enough to stop a person from ever reaching for a fan or the building thermostat. The team’s first textile could save a building full of workers 20 to 30 percent of their total energy budget.

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Jan 22, 2016

By nike air max plus tn ultra black/black roshe

Chris from IdeaSpaceVR has built an interactive 360-degree photosphere viewer. Space bar toggles a menu system, and a gaze-based cursor selects photos.

Recently I installed the Cardboard Camera app on my phone. It is a 360-degree photosphere VR app for Google Cardboard including a nice menu in VR which allows one to easily select photos from a list. The photosphere is showing photos with a so-called equirectangular projection (did not hear about that term before, as I am not a photo nerd ;-) ).

Since I knew that A-Frame had been released I thought of implementing this app in A-Frame, as I thought it might be quite easy to do, AND I would learn coding in A-Frame.

After a few hours of playing around I realised that

(a) yes it is easy to implement a photosphere BUT (b) implementing a decent VR menu could not be done by just using A-Frame tags.

Which lead me to implement my first component for A-Frame. As it turned out, I needed actually two components:

The first component handles the VR photo menu (showing the menu, hiding the menu, position it in space). This component acts as a container for the photo thumbnails. You can check out the nike air max 2014 blue recalled 7JF1X
. I have to admit that I was not able to write the code for positioning the menu in space. So I turned to Stack Overflow which helped me out on that one (again).

The second component is associated to each photo thumbnail within the menu container. I handles the selection of the photo via the mouse click event. I disabled the fuse cursors which would normally emit this click event. After many tests I decided that I did not like the fuse cursor for selecting photos. I guess people nowadays either have a Cardboard 2.0 (which supports a button) or an Oculus Rift and a mouse and keyboard. Additionally, I decided to only show the cursor when the menu is visible.

The main index.html file is straightforward. It contains the code for the photo thumbnail menu animation, the sky tag, the camera, the cursor, and their settings. Here’s the source code .

Anyway, this is a very first version of the 360-photosphere viewer, but I am quite pleased with it.

All photos are licensed under Creative Commons 2.0 Generic Attribution .

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, or you can create your own by using Android Camera app (using the photosphere option).

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