People who oppose wind farms often claim wind turbine blades kill large numbers of birds, often referring to them as "bird choppers". And claims of dangers to iconic or rare birds, especially raptors, have attracted a lot ...
Energy & Green Tech
Jun 16, 2017
35
1383
A combined team of researchers from Japan and Egypt has found evidence that suggests a dagger found in King Tut's tomb had origins outside of Egypt. In their paper published in the journal Meteoritics & Planetary Science, ...
The helicopter that NASA has placed on Mars could make its first flight over the Red Planet within two days after a successful initial test of its rotors, the US space agency said Friday.
Space Exploration
Apr 10, 2021
7
5854
Razors, scalpels, and knives are commonly made from stainless steel, honed to a razor-sharp edge and coated with even harder materials such as diamond-like carbon. However, knives require regular sharpening, while razors ...
Materials Science
Aug 6, 2020
8
384
(PhysOrg.com) -- James Dyson, inventor of the bag-less vacuum cleaners has taken his invention one step further with the unveiling of the bladeless fan. Using 'Air Multiplier' technology the bladeless fan pushes 119 gallons ...
(PhysOrg.com) -- A device developed by Sandia National Laboratories researchers that shoots a blade of water capable of penetrating steel is headed to U.S. troops in Afghanistan to help them disable deadly improvised explosive ...
Engineering
Sep 10, 2010
4
0
Is it a flying car or a driving aircraft? Either way, the Personal Air and Land Vehicle, or PAL-V for short, has just proved it can handle the skies as well as the highway, both at up to 180 kilometres (112 miles) per hour, ...
Hi Tech & Innovation
Apr 3, 2012
8
0
It's a small piece of obsidian, just over 5 centimeters long, likely found on a hard-scrabble piece of ranchland in the Texas panhandle. But when SMU anthropologist Matthew Boulanger looks at it, he gets a mental image of ...
Archaeology
Feb 23, 2024
2
110
The whirling blades on drones flying above Mars may cause tiny electric currents to flow in the Martian atmosphere, according to a NASA study. These currents, if large enough, might cause the air surrounding the craft to ...
Space Exploration
Feb 2, 2022
0
196
The Periodic Table may not sound like a list of ingredients but, for a group of materials scientists, it's the starting point for designing the perfect chemical make-up of tomorrow's jet engines.
Engineering
Jun 29, 2015
1
68
A blade is that portion of a tool, weapon, or machine with a cutting edge and/or a pointed tip that is designed to cut and/or puncture, stab, slash, chop, slice, thrust, or scrape animate or inanimate surfaces or materials. A blade may be made from a flaking stone, such as flint, metal (usually steel), ceramic, or other material.
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