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fuckyeahfluiddynamics:

Ethereal forms shift and swirl in photographer Thomas Herbich’s series “Smoke”. The cigarette smoke in the images is a buoyant plume. As it rises, the smoke is sheared and shaped by its passage through the ambient air. What begins as a laminar plume is quickly disturbed, rolling up into vortices shaped like the scroll on the end of a violin. The vortices are a precursor to the turbulence that follows, mixing the smoke and ambient air so effectively that the smoke diffuses into invisibility. To see the full series, see Herbich’s website.  (Image credits: T. Herbich; via Colossal; submitted by @jchawner@__pj, and Larry B)

P.S. - FYFD now has a page listing all entries by topic, which should make it easier for everyone to find specific topics of interest. Check it out!

nanodash:

nanodash:

This is Alexandrite, it’s also called “emerald by day, ruby by night”

It changes colour based on whether the light source is from the sun or from a candle.

It does this because Alexandrite strongly absorbs yellow light due to chromium ions in its crystal structure, leaving the other colours behind. Light from the Sun emits all colours, but it peaks in the green, and our eyes are most sensitive to green, so in Sunlight Alexandrite is green.

Incandescent lights are things like candles and filament light bulbs. They also emit all colours of light, but they peak far, far into the red, so there’s not nearly as much green or blue, so under those, Alexandrite is red. 

Gemstones are awesome.

You didn’t miss it. Look at the notes. But still.

nanodash:

nanodash:

This is Alexandrite, it’s also called “emerald by day, ruby by night”

It changes colour based on whether the light source is from the sun or from a candle.

It does this because Alexandrite strongly absorbs yellow light due to chromium ions in its crystal structure, leaving the other colours behind. Light from the Sun emits all colours, but it peaks in the green, and our eyes are most sensitive to green, so in Sunlight Alexandrite is green.

Incandescent lights are things like candles and filament light bulbs. They also emit all colours of light, but they peak far, far into the red, so there’s not nearly as much green or blue, so under those, Alexandrite is red. 

Gemstones are awesome.

You didn’t miss it. Look at the notes. But still.

petrichoriousparalian:

rollership:

eduardo said: 

10 Reasons Why EarthShips Are Fucking Awesome

Earthships are 100% sustainable homes that are both cheap to build and awesome to live in. They offer amenities like no other sustainable building style you have come across. For the reasons that follow, I believe Earthships can actually change the world. See for yourself!

1) Sustainable does not mean primitive

When people hear about sustainable, off-the-grid living, they usually picture primitive homes divorced from the comforts of the 21st century. And rightfully so, as most sustainable solutions proposed until now have fit that description. Earthships, however, offer all of the comforts of modern homes and more. I’ll let these pictures do the talking…

2) Free Food

Each Earthship is outfitted with one or two greenhouses that grow crops year-round, no matter the climate. This means you can feed yourself with only the plants growing inside of your house. You can also choose to build a fish pond and/or chicken coop into your Earthship for a constant source of meat and eggs.

3) Brilliant Water Recycling

Even the most arid of climates can provide enough water for daily use through only a rain-harvesting system. The entire roof of the Earthship funnels rain water to a cistern, which then pumps it to sinks and showers when required. That used ‘grey water’ is then pumped into the greenhouse to water the plants. After being cleaned by the plants, the water is pumped up into the bathrooms for use in the toilets. After being flushed, the now ‘black water’ is pumped to the exterior garden to give nutrients to non-edible plants.

4) Warmth & Shelter

The most brilliant piece of engineering in the Earthship is their ability to sustain comfortable temperatures year round. Even in freezing cold or blistering hot climates, Earthships constantly hover around 70° Fahrenheight (22° Celsius).

This phenomenon results from the solar heat being absorbed and stored by ‘thermal mass’ — or tires filled with dirt, which make up the structure of the Earthship. The thermal mass acts as a heat sink, releasing or absorbing heat it when the interior cools and heats up, respectively.

The large greenhouse windows at the front of the house always face south to allow the sun to heat up the thermal mass throughout the daytime.

5) Energy

Solar panels on the roof and optional wind turbines provide the Earthship with all of the power it needs. As long as you’re not greedily chewing through electricity like a typical first-world human, you’ll never be short of power.

6) Freedom

With all of your basic needs provided for and NO bills each month, you’re free! You don’t have to work a job you hate just to survive. So you can focus your time on doing what you love, and bettering the world around you.

Imagine if the entire world was able to focus on doing extraordinary things instead of just making enough to get by. Imagine if even 10% of the world could do this. What would change?

7) Easy to build

At a recent Earthship conference in Toronto, Canada, a married couple in their forties shared about how they built a 3-story Earthship by themselves in 3 months. They had never built anything before in their lives and were able to build an Earthship with only the printed plans. They did not hire any help, nor did they use expensive equipment to make the job easier.

If one man and one woman can do this in 3 months, anyone can do it.

8) Cheap

Earthships are exorbitantly cheaper than conventional houses. The most basic Earthships cost as little as $7000 (The Simple Survival model) with the most glamorous models costing $70,000 and up, depending on how flashy you want to be with your decorating.

With these cost options, Earthships can fit the needs of everyone — from the least privileged to the most worldly.

9) Made of recycled materials

Much of the materials used to build Earthships are recycled. For starters, the structure is built with used tires filled with dirt.

If there’s one thing we’re not short of on Earth, it’s used tires! There are tire dumps like the one pictured here in every country in the world. There are even places that will pay you by the tire to take them away.

The walls (above the tires) are created by placing plastic and glass bottles in concrete. When the Earthship team was in Haiti after the earthquake, they employed local kids to both clean up the streets and provide all of the bottles required for building their Earthship. Plus, they look pretty sexy.

10) Think Different

The most powerful thing Earthships do is force people to think differently about how we live. If housing can be this awesome, and be beneficial to the environment, then what else can we change? What else can become more simple, cheaper and better at the same time?

It’s time for us to re-think much of what we consider normal.

So these are corporatized dobhouses?

(Source: mylittlerewolution)

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