Showing posts with label Science and Technology. Show all posts
Showing posts with label Science and Technology. Show all posts

Monday, April 25, 2011

Size doesn't matter: The giant Spirograph as large as a room that is just as precise as a hand-held toy

Dominating a whole room, it looks far too unwieldy to draw a geometric picture with a small ballpoint pen.

But this giant Spirograph graphic images that are both huge and unique each time.

Swedish artist Eske Rex constructed the 'Drawingmachine', which works by suspending two pendulums from separate wooden towers and connecting them through drawing arms and moveable joints.

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Bigger is better: A giant Spirograph creates incredible precise geometric images with a standard ballpoint pen

Bigger is better: A giant Spirograph creates incredible precise geometric images with a standard ballpoint pen

A ballpoint pen, which is dwarfed by the apparatus surrounding it, rests on a drawing surface covered with paper and is mounted at the point where the pendulums come together.

The pendulums are set in motion by hand, and their movements are represented by the drawing on the paper.

Mr Rex said: 'I am interested in the machine as a sculpture in space, a constantly changing mobile.

'In addition, the universe in the drawings is interesting by virtue of their spatial, textural, temporal qualities - a never-ending experiment where it is impossible to produce two identical drawings.'

The 'Drawingmachine' was constructed by Swedish artist Eske Rex. Two pendulums are each suspended from a wooden tower and connected them through drawing arms and moveable joints

The 'Drawingmachine' was constructed by Swedish artist Eske Rex. Two pendulums are each suspended from a wooden tower and connected them through drawing arms and moveable joints

Precise art: The pendulums are set in motion by hand, and their movements are represented by the drawing on the paper

Precise art: The pendulums are set in motion by hand, and their movements are represented by the drawing on the paper

Amazingly, he claims never to have heard of the Spirograph and was instead inspired by the harmonograph, a mid-19th century device that also uses pendulums to create a geometric image.

He explained the concept behind his huge gallery piece was to captivate the audience.

'The movements of the pendulums affect the entire room, and the experience engages the beholder's body,' he said.

'While the rhythmic repetitions cause the beholder to pause, the drawing emerges on the paper.'

Mr Rex claims to have never heard of the Spirograph and was instead inspired by the harmonograph, a mid-19th century device that also uses pendulums to create a geometric image

Unique design: Mr Rex claims to have never heard of the Spirograph and was instead inspired by the harmonograph, a mid-19th century device that also uses pendulums to create a geometric image

Unfamiliar pattern: Spirograph sets were popular in the 1960s and 1970s

Unfamiliar pattern: Spirograph sets were popular in the 1960s and 1970s

Saturday, April 23, 2011

What a stinker! World's smelliest flower opens for the first time in a DECADE

For botanists, it doesn't get more exciting than this - after 75 years, the Titan Arum plant has unfurled its leaves and is in full bloom.

For curious crowds who gathered, they perhaps realised that a once-in-a-lifetime look is more than enough - thanks to its pungent odour of rotting flesh.

The flower, nicknamed 'Corpse flower', bloomed late on Good Friday at the University of Basel, Switzerland and is expected to remain open until Easter Sunday.

Miracle-Gro: The flower opened for the first time in 75 years on Good Friday

Miracle-Gro: The flower opened for the first time in 75 years on Good Friday

The eight foot plant, which is indigenous to Sumatra's rainforests in Indonesia, has the largest unbranched shoot in the world. On average, they bloom once in a decade.


Titan Arum is coveted by collectors and plant enthusiasts around the world because of its strange blooming patterns.

Once in a lifetime: Crowds capture Titan Arum in bloom at the University of Basel, Switzerland

Once in a lifetime: Crowds capture Titan Arum in bloom at the University of Basel, Switzerland

It produces umbrella-sized petals which open to a diameter of three to four feet.

Its distinctive smell can be detected from half a mile away. The odour, which is usually strongest at night, is meant to attract pollinators such as carrion beetles and flesh flies.

Rare sighting: Botanists love the plant because it blooms so infrequently - despite the smell of rotting flesh
Rare sighting: Botanists love the plant because it blooms so infrequently - despite the smell of rotting flesh

Rare sighting: Botanists love the plant because it blooms so infrequently - despite the smell of rotting flesh

Twelve of them are housed at the Royal Botanic Gardens, Kew, in the Princess of Wales Conservatory among hundreds of other tropical plants.

When the plants are ready to pollinate, the stem heats up to release a pungent smell, which lasts for about three days.

Beauty: The plant originates from Sumatra in Indonesia

Beauty: The plant originates from Sumatra in Indonesia

The largest Arum at Kew gardens weighs 200lb and grows at a staggering rate of a quarter of an inch an hour.

It guzzles liquid fertiliser and potassium each week to keep up its strength while bedded in roomy surroundings.

Captivating: Crowds gather as the plant prepares to open its leaves

Captivating: Crowds gather as the plant prepares to open its leaves

Sir David Attenborough, who invented the name Titan Arum, was the first to capture it flowering on film for his BBC TV series The Private Life of Plants.

He dropped the plant’s original name – Amorphophallus – perhaps because of the reference to male genitalia.

Wednesday, April 20, 2011

Star Wars is real: Life could thrive on planets like Tatooine with two suns... but the plants would be black


It was a fantasy world plucked from George Lucas' imagination.

But life could thrive on a planet like Luke Skywalker's Tatooine, with its two suns, in the Star Wars universe, scientists have claimed.

However, the legendary director did get one detail wrong - the trees would have had black leaves.

Two suns: Life could thrive on a planet like Luke Skywalker's Tatooine, scientists have claimed

Two suns: Life could thrive on a planet like Luke Skywalker's Tatooine, scientists have claimed

Scientists have discovered that the temperature of a star determines its colour - and at different temperatures, life evolves in very different ways.

Photosynthesis - the process by which plants produce energy from sunlight - is altered when the light colour is changed.

Researchers carried out computer simulations to model Earth-like planets either orbiting two stars close together or one of two widely separated stars.

They found that plants with dim red dwarf suns - like the desert world of Tatooine - are likely to have black or grey plants.

The study is significant because it means scientists hunting for alien life should not rule out planets with multiple suns as uninhabitable.

Many multi-star systems contain 'red dwarfs'. These are cool, faint stars that are the most common star type in our galaxy, the Milky Way.

Around half of all red dwarfs, and a quarter of sun-like stars, exist in multiple systems.

Black plants? Photosynthesis happens differently when the light colour is changed

Black plants? Photosynthesis happens differently when the light colour is changed

Jack O'Malley-James, who is leading the University of St Andrews research, said: 'The temperature of a star determines its colour and, hence, the colour of light used for photosynthesis.

'Depending on the colours of their star-light, plants would evolve very differently.

'Our simulations suggest that planets in multi-star systems may host exotic forms of the more familiar plants we see on Earth.

'Plants with dim red dwarf suns for example, may appear black to our eyes, absorbing across the entire visible wavelength range in order to use as much of the available light as possible.

'They may also be able to use infrared or ultraviolet radiation to drive photosynthesis.

'For planets orbiting two stars like our own, harmful radiation from intense stellar flares could lead to plants that develop their own UV-blocking sun-screens, or photosynthesising microorganisms that can move in response to a sudden flare.'

Plants get their green colour from the pigment chlorophyll. It absorbs the light, which is vital if photosynthesis is to take place.