ريتشارد دوكنز's Blog, page 689
September 15, 2015
1 in 5 Americans Confuse Astrology and Astronomy
Shipfactory | Shutterstock.com
By Elizabeth Palermo
Do you understand the relationship between elevation and the boiling point of water? Do you know what property of a sound wave determines its loudness? If so, than you likely know more about science than most Americans, the majority of whom got these questions wrong on a recent survey by the Pew Research Center.
The nonprofit organization recently polled a representative sample of 3,200 Americans of different ages, genders, ethnicities, races and levels of education and found that, though most of those surveyed understood basic scientific concepts, like the fact that a light-year measures distance (72 percent), far fewer participants knew the answers to more difficult scientific questions.
Some 22 percent of Americans misidentified the “study of how the positions of stars and planets can influence human behavior,” as astronomy rather than what is considered a pseudoscience, astrology.
Read the full article by clicking the name of the source below.
How 3D holograms work
Holograms are photographic recordings of 3D scenes. Unlike a camera, which captures one view through a small viewer focused by a lens, holograms capture an entire light field which allows them to recreate the 3D scene. Shimmery 2D projections, like pre-recorded Pepper’s ghost illusion, are often confused with 3D holograms.
Pepper’s Ghost Tutorials
https://www.youtube.com/watch?v=ygMXTx0fLqw
https://www.youtube.com/watch?v=7YWTtCsvgvg
instagram.com/thephysicsgirl
facebook.com/thephysicsgirl
twitter.com/thephysicsgirl
physicsgirl.org
Physics Girl has joined PBS Digital Studios! https://www.youtube.com/user/pbsdigitalstudios
Videography: Forbidden Kingdom Digital, Cathy Cowern
Editing: Dianna Cowern and Forbidden Kingdom Digital forbiddenkingdomdigital.com
Hologram microscopic views: Richard L Howey http://www.microscopy-uk.org.uk/mag/artmar07/rh-whimsies.html
and https://en.wikipedia.org/wiki/Holography#/media/File:Holographic_recording.jpg
Tupac Coachella Footage: https://www.youtube.com/watch?v=YgMen4-PI74
Music:
YouTube – “On the Bach,” “Good Starts”
Mozart “Eine Kleine Nachtmusik”
Stock Images: Pixabay
September 14, 2015
These Headphones Transmit Sound Into Your Skull
Photo credit:
Screenshot from Studio Banana Things Kickstarter video
Earbuds and headphones are great tools for listening to music, but what if you could jam out to your favorite beats “ears-free”? Sounds a bit like science fiction, right? Thanks to a concept called bone conduction, Studio Banana Things has designed a product that will allow you to listen to music ears-free.
Eyes Are A Lot More Expensive Than We Thought
Photo credit:
This eyeless Mexican cavefish is saving considerable energy by doing without sight. uttelvaserova Stuchelova/Shutterstock
The eye is such a valuable organ that it has evolved independently more than once, but it turns out animals pay a surprisingly high price for perceiving part of the electromagnetic spectrum. For one species of fish vision can consume as much as 15% of its energy intake, according to work published in Science Advances.
Elephants Born To Stressed Mothers Age Faster
Photo credit:
There are around 5,000 elephants used in the timber industry in Myanmar. Aditya Singh/Shutterstock
Asian elephants born to stressed mothers feel the impact for the rest of their lives. New research has shown how elephants born into stressful situations not only have fewer offspring over their lives, but they also age faster.
You Can Watch Wild Killer Whales In Action Thanks To These New Live Cameras
Photo credit:
An orca seen off Hanson Island. Jonathan Silvio.
A new series of live cameras has launched that lets you watch killer whales, also called orcas, from the comfort of your own home. Their location, near Hanson Island off the central coast of British Columbia, Canada, is a popular spot for families of orcas to gather, meaning that viewers can expect regular sightings.
A Storm Knocked This Tree Over, And A Skeleton Was Found Hanging From The Roots
Photo credit:
The tree. Photo credit Thorsten Kahlert
The inhabitants of Collooney – a small town in Northern Ireland – made a shocking discovery after a violent storm ripped through the area. A 200-year-old beech tree toppled over, revealing what could be a medieval murder scene. While it’s not uncommon for storms to uproot trees, it’s not every day one finds a skeleton dangling from the tree’s roots.
10,000-Year-Old Stone Tools Unearthed In Washington State
Photo credit:
SWCA Environmental Consultants, published in PaleoAmerica.
An archaeological survey to make way for construction has unearthed a trove of 10,000-year-old stone tools in western Washington. More than 4,000 stone flakes, scrapers, awls and spear points were found, dating back to a time when its inhabitants roamed the same lands as shaggy-haired mammoths and prehistoric bison.
Astronaut On The ISS Controls Rover On Earth
Photo credit:
Mogensen is seen here controlling the rover on 7 Sept 2015. ESA.
An astronaut on the International Space Station (ISS) has successfully controlled a robot back here on lowly planet Earth, a technique known as telerobotics. The experiment is important because we may use a similar technique to explore worlds beyond Earth – such as Mars – in the future.
No, A Study Hasn’t Found That Smoking Weed Gives You Diabetes
Photo credit:
dimitris_k/Shutterstock
Sensationalist headlines have suggested that smoking weed can raise your risk of diabetes, but that wasn’t quite what this latest research found. What the authors actually described was an association between a condition known as prediabetes and marijuana use.
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