Showing posts with label science. Show all posts
Showing posts with label science. Show all posts

Tuesday, 15 June 2010

Whales, Tuberculosis, Monarchs, etc.

This is also from the 1886 Goldsmith book, this time the outside back cover.
The text reads : Woodhouse's Balsam of Spermaceti or Pectoral Cough Drops for Consumptive or Other Coughs, also for Colds, Shortness of Breath, Asthma, Wheezing and other Afflictions of the Chest.

Spermaceti is produced by whales, you can read about it here. If swallowing bits of whale for the sake of your chest sounds silly, the discovery of streptomycin (the first antibiotic effective against tuberculosis) had to wait until 1944. If you'd like to read about the history of tuberculosis and its treatments, the Wikipedia article is interesting.

In former times, the touch of your King or Queen was thought to be efficacious:

"Persons of royal blood were thought to have the 'God given' power of healing by this condition by touch, and sovereigns of England and France practiced this power to cure sufferers of scrofula, a form of tuberculosis of the bones and lymph nodes, commonly known as the "King's or Queen's Evil" or "Morbus Regius". In France it was called the "Mal De Roi". Curiously William the Lion, King of Scotland is recorded in 1206 as curing a case of Scrofula by his touching and blessing a child who had the ailment. Charles I touched around 100 people shortly after his coronation at Holyrood in 1630. It was only rarely fatal and was naturally given to spontaneous cure and lengthy periods of remission. Many miraculous cures were recorded and failures were put down to a lack of faith in the sufferer. The original Book of Common Prayer of the Anglican Church contained this ceremony."
"The custom lasted from the time of Edward the Confessor to the reign of Queen Anne, although her predecessor, William III refused to believe in the tradition and did not carry out the ceremony."

"Queen Anne, amongst many others, touched the 2 year old infant Dr. Samuel Johnson in 1712 to no effect, for although he eventually recovered he was left badly scarred and blind in one eye. He wore the medal around his neck all of his life and it is now preserved in the British Museum. It was believed that if the touch piece was not worn then the condition would return. Queen Anne last performed the ceremony on 30 March 1712. George I put an end to the practice as being "too Catholic."'
"The monarch himself / herself hung these touch piece amulets around the necks of sufferers. In later years Charles II only touched the medalet as he unsurprisingly disliked touching diseased people directly. He 'touched' 92,107 people in the 21 years from 1661 to 1682, performing the function 8,500 times in 1682 alone." [Wikipedia]

So now you know. The whole bizarre Wikipedia article on "touch pieces" (=healing talismans) is here.

Sunday, 13 June 2010

Piglet squid. No really.


Sometimes nature comes up with something so funny-looking you can't quite believe it. Funny-looking to us, anyway. I wonder what we look like to them?

Check out this item on piglet squid. And Google offers a range of other images almost as funny.

In other crazy nature news, jaguars are attracted to Calvin Klein's Obsession for Men fragrance. This is a boon for animal biologists trying to study the elusive big cats, but you might want to think twice before wearing it on your rainforest holiday.

Tuesday, 25 May 2010

Seed banks and biodiversity


The BBC recently had this nice story of a minute waterlily brought back from extinction through stored seed:

"Two years ago, this delicate bloom went extinct in the wild due to over-exploitation of its habitat.

Luckily its seeds were kept in storage - and were used by Carlos Magdalena to regrow the plant at Kew Gardens - just outside London.

It took him months to find the ideal conditions for growth. He hopes now that the Thermal Lily will flourish once again in the hot springs of Rwanda...." (read more)



There is also a passionate piece on the urgency of banking seed as a way of safeguarding species for the future:

"Kew's Millennium Seed Bank is a unique, global asset. It is the largest facility of its kind in the world and contains the world's most diverse seed collections.

Over the past 10 years, more than 3.5 billion seeds from 25,000 species have been collected and stored in their country of origin and in Kew.

Species are chosen by country partners according to whether they are rare or endangered or of particular potential use - for example as medicine, food, animal fodder or shelter.

Described by Sir David Attenborough as "perhaps the most ambitious conservation initiative ever", the partnership will announce on 15 October the banking and conservation of 10% of the world's plant species." (read more)

And if you thought cities were a desert, in terms of biodiversity, you couldn't be more wrong:

"There are four bodies lying and crouching in our tiny back garden. The ecologists from the Natural History Museum (NHM) got here only minutes ago, but, while the kettle boils, they are already grubbing about behind our bins, under our windowsills, in the lawn, flowerbed and log pile.

They are doing a "bioblitz" – trying to find as many species of animal and plant as possible in this small, suburban south-west
London garden. Our back garden is only 12 paces long and seven wide, with, now I look at it through the eyes of ecologists, pitifully few flowers. Happily, they appear undaunted. "The great thing is, even with gardens like this that look fairly sterile, there's always something there," says the museum's insect specialist, Stuart Hine. "We'll move plant pots, and we'll have a look through your log pile . . . Lots of spiders, centipedes, woodlice, slugs – they'll all be there."" (read more)

Monday, 17 May 2010

Snap, crackle, pop!

Thanks to Andrew for pointing me to this wonderful electrical rendition of the Doctor Who theme.



The device used here is sometimes known as a "Zeusaphone", because of the, uh, lightning bolts!

According to Wikipedia:


"Zeusaphone, also called a Thoremin, is trademark for a high-frequency, solid state Tesla coil, when its spark discharge is digitally modulated so as to produce musical tones. The high-frequency signal acts in effect as a carrier wave; its frequency is significantly above human-audible sound frequencies, so that digital modulation is able to reproduce a recognizable pitch. The musical tone results directly from the passage of the spark through the air.

This is a variant of the plasma arc loudspeaker, designed for public spectacle and sheer volume rather than fidelity."

If you fancy the musical sparks, you can buy one, here.

Sunday, 4 April 2010

Setting us straight!

A lot of physics as taught in school and printed in textbooks is not just oversimplified but actually wrong. If you want your illusions shattered, read this page! Highlights include:

  • SCIENTISTS USE THE SCIENTIFIC METHOD? not quite.
  • LAKES AND OCEANS ARE BLUE BECAUSE THEY REFLECT THE BLUE SKY? No.
  • CLOUDS REMAIN ALOFT BECAUSE WATER DROPLETS ARE TINY? Wrong!
  • THE SKY IS BLUE BECAUSE OF COMPLICATED PHYSICS No, it's simple.
  • A LEMON-BATTERY CAN LIGHT A FLASHLIGHT BULB? doesn't work!
  • SOUND TRAVELS BETTER THROUGH SOLIDS & LIQUIDS? No it doesn't.
  • GRAVITY IN SPACE IS ZERO? It's actually strong.
  • A WING'S LIFTING FORCE IS CAUSED BY ITS SHAPE?, no, by trailing edge angle.
  • FOR EVERY ACTION, THERE IS AN EQUAL AND OPPOSITE REACTION? Newton said otherwise.
  • BEN FRANKLIN'S KITE WAS STRUCK BY LIGHTNING? He'd have died.

  • These and many other points are discussed and explained. Some take a while to get your head around, but it's worth the effort! Thanks to Niels for the link.

    Tuesday, 15 December 2009

    Landscapes of Mars


    Thanks to Andrew for pointing me to these astonishing photos of Mars, taken over the last 3 years by NASA's Mars Reconnaissance Orbiter. They really are breathtaking, go have a look!

    Monday, 14 December 2009

    An excellent summary about climate change

    The BBC has this excellent animated feature explaining the process of climate change.

    And there's this excellent short video demonstrating the warming effect of carbon dioxide...in a bottle!

    Friday, 6 November 2009

    The Perennial Wheat Project


    "We tend to think Earth can provide us with an endless bounty of food. But farming practices in most parts of the world can't work forever. Soil is constantly washing away, and what's left is gradually losing the nutrients it needs to sustain our crops.

    "In the prairies of Kansas lives Wes Jackson, a man who has spent his long and rich career trying to invent a new kind of agriculture — one that will last indefinitely."

    "To make progress on the biological problem, Jackson recruited a handful of young and ambitious Ph.D. plant breeders. Their mission: nothing less than to reinvent the world's most important crops.

    "Jackson decided to figure out a way to breed grain crops so they can be planted once, actually replenish the soil, and be harvested year after year. One of the scientists Jackson brought to the Land Institute to work on this is a Minnesota farm boy turned plant breeder, Lee DeHaan.

    "At the time I started here, they said, 'Let's put the youngest guy on wheat, because maybe he can see it through,' " DeHaan says. "We're not expecting it to be something that's real easy to do or something that we'll see the results of really soon."

    A fascinating article on NPR, read the whole thing here. Thanks Jason for the link.

    Sunday, 18 October 2009

    Feeding the World


    "Thomas Robert Malthus, the namesake of such terms as "Malthusian collapse" and "Malthusian curse," was a mild-mannered mathematician, a clergyman—and, his critics would say, the ultimate glass-half-empty kind of guy. When a few Enlightenment philosophers, giddy from the success of the French Revolution, began predicting the continued unfettered improvement of the human condition, Malthus cut them off at the knees. Human population, he observed, increases at a geometric rate, doubling about every 25 years if unchecked, while agricultural production increases arithmetically—much more slowly. Therein lay a biological trap that humanity could never escape."

    "So what is a hot, crowded, and hungry world to do?"

    "That's the question von Braun and his colleagues at the Consultative Group on International Agricultural Research are wrestling with right now. This is the group of world-renowned agricultural research centers that helped more than double the world's average yields of corn, rice, and wheat between the mid-1950s and the mid-1990s, an achievement so staggering it was dubbed the green revolution. Yet with world population spiraling toward nine billion by mid-century, these experts now say we need a repeat performance, doubling current food production by 2030."

    "In other words, we need another green revolution. And we need it in half the time."

    - from the fascinating National Geographic article, The Global Food Crisis: The End of Plenty. It's long but it covers a lot of ground. Everyone should read it.

    Friday, 16 October 2009

    Buckyballs magnetic building spheres


    Buckyballs are spherical carbon molecules in which the carbon atoms are arranged in a pattern that recalls a geodesic dome. You can read more about buckyballs here.

    Only a few scientists get to play with real buckyballs, but ThinkGeek has a new toy which allows the rest of us to play with round magnets and pretend they are carbon atoms, if we so wish! Have a look at the magnets here. And make sure you watch the video, it's awesome!

    And no, ThinkGeek is not paying me to say this. :-)


    Tuesday, 13 October 2009

    Flying hordes

    These amazing radar images show the night-time skies over the US are thick with migrating birds. Thanks to Mekayla for the link.

    Tuesday, 11 August 2009

    Bif, Bam, Boom



    If you've ever worried that you might be on the sharp end of a meteorite strike, check out The Earth Impact Database, which catalogues all known impact craters. There are quite a few. The largest is a little dimple in South Africa 300km across!, and the smallest is a less-dramatic 15m-wide feature in Kansas. In between is the famous Chicxulub crater off the coast of Mexico, the impact of which is thought to have brought the end of the dinosaurs. The thumbnails pictured here are Manicouagan crater in Quebec, Canada, and the famous Barringer crater in Arizona.

    You can search by continent: this is the map of Australia, with all the bullseyes marked. Click on any of the splat-marks and you will see more details.
    And each of the listings is linked through to Google Maps so you can look at the terrain directly. I love smart websites like this!

    Thursday, 18 December 2008

    BANG!

    On August 7th, in the Aleutian Islands off the coast of Alaska, Kasatochi volcano erupted. I don't remember reading about this at all in the news at the time, but the whole thing was rather dramatic: a remote island not known to be volcanically active, home to 100,000 breeding seabirds, and 2 biologists studying the birds, stages a series of massive eruptions which transform the island! The biologists are rescued by a fishing boat with only minutes to spare. Thousands of seabird chicks are killed, no trace is left of the research station, the island's shoreline is extended 400m out to sea, and the formerly-lush island now looks like the surface of the moon.

    You can read the whole story of the eruption here. And there is a "before" picture here and "after" pictures here, here and here.

    And material thrown out by the volcano has caused dramatically-coloured sunsets over a huge area of the Midwestern US. You can see some examples here. And there's a neat animation of the spread of ejected dust and sulphur dioxide around the northern hemisphere here.

    Saturday, 13 December 2008

    Feathered Dinosaurs: The Origin of Birds
    Feathered Dinosaurs: The Origin of Birds

    Modern birds evolved from a group of carnivorous dinosaurs which included Tyrannosaurus Rex and Velociraptor. Feathers are in fact modified reptilian scales!

    What has become clear recently, from a number of sensational finds in Asia, is the sheer diversity of feathered dinosaurs. While very few of them could fly, their feathers must have served all sorts of other purposes, from insulation to camouflage to display to the ability to run faster and escape predators by gliding.

    This beautiful book has a very detailed and absorbing text, and sumptuous illustrations which attempt to recreate the appearance and behaviour of the feathered dinosaurs, based on comparisons with modern birds and other animals.

    You can buy it from Fishpond
    here.

    Saturday, 18 October 2008

    Gecko glue

    This fascinating story tells about a new dry adhesive that mimics the way geckoes hold themselves on walls and ceilings.

    Sunday, 8 June 2008

    Atmospheric optics - what an amazing site

    Anyone interested in clouds, rainbows, ice halos, the aurora, green flashes, or any other crazy optical effects happening in the atmosphere will love this site.

    Honestly, it has so many pages full of information and stunning photographs that I have only looked at a small portion! Which means I have a lot more to look forward to. :-D

    The page that I first looked at is of rare ice halos photographed over Antarctica in 1999. Truly staggering images! And the site explains the more common halos to look out for, as well as fascinating speculation on the ice halos that might be seen on other planets, where the airborne ice crystals are made of methane, ammonia, or carbon dioxide!

    Monday, 12 May 2008

    I want a puggle!

    What is a baby platypus called? A puggle! I kid you not! There's a picture of one here. And there's a neat article on platypuses here in the NYT. (access is free but registration is required)

    Baby echidnas are also called puggles, and there's one here.

    Tuesday, 22 April 2008

    The most common life-like thing on earth :-)

    The folk at Astronomy Picture of the Day have this crazy photo of some bacteriophage viruses attacking a bacterium.

    And these bacteriophage ("bacteria-eating") viruses are everywhere!

    "A pinch of soil or drop of seawater, for example, contains many millions of bacteriophages."
    "They're nature's most successful experiment," says Marisa Pedulla of the University of Pittsburgh. "They outnumber all the bacteria, all the humans, whales, trees, et cetera, put together."

    They're "the pinnacle of creation," adds Graham Hatfull, a Howard Hughes Medical Institute investigator at the University of Pittsburgh. "Phages represent the major form of life in the biosphere."

    Read more in an intriguing Science News article on phages, wittily titled, All The World's a Phage.

    Thursday, 3 April 2008

    Prehistoric bugs in amber

    How can you examine tiny and microscopic insects and plants trapped in ancient, opaque amber?

    "The European Synchrotron Radiation Facility (ESRF) in Grenoble, France, produces an intense, high-energy light that can pierce just about any material, revealing its inner structure.

    Tafforeau and colleague Malvina Lak have put kilos of opaque amber chunks in the way of this beam and have found a treasure trove of ancient organisms.
    From more than 600 blocks, they have identified nearly 360 fossil animals. Wasps, flies, ants - even spiders. There are also small fragments of plant material. All of it caught up in the sticky goo of some prehistoric tree and then locked away until modern science provided the key."


    Having scanned the amber from at least 1,000 angles, a 3-D scale model can then be produced on the 3-D printer.

    Amazing! Read the whole story here.