Harry Riewoldt

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How To Turn A Clothespin Into A Matchstick Gun

Update your desktop arsenal with this creation<p>DIY enthusiast Grant Thompson, who previously made a 10-penny battery that powered a small light for almost two weeks, is at it again. Inspired by another project tutorial, Thompson created seven variations of a mini-pistol that can fire matches over 20 …

Ammunition

Reaction101: A chemistry app that allows you to view chemical reactions and edit them

Invalid data returned from the iTunes Web Service. Check your app ID, and verify that the iTunes is currently up.<p>As much as some of you may not want …

22 Quotes That Take You Inside Albert Einstein's Revolutionary Mind

You could find him "wheeling a baby carriage on the streets of Bern, Switzerland, halting now and then, unmindful of the traffic around him, to scribble down some mathematical symbols in a notebook that shared the carriage with his infant son, also named Albert," The New York Times wrote in its …

5 Fun Physics Phenomena

How to set up a VPN to speed up Netflix and bypass regional restrictions

Virtual private networks (VPNs) give computer users a wide range of capabilities and benefits. For starters, VPNs allow you to securely connect to …

The meaning of exponential

Exponential increases, and decreases, pop up quite often in various contexts. The word is generally used as an impressive adjective to imply something happening really fast and getting faster. This isn’t always sensible. In fact exponential decreases start fast and get slower, hence the problem …

APOD: A Solar Filament Erupts (2014 Jul 20) Image Credit: NASA's GSFC, SDO AIA Team http://apod.nasa.gov/apod/ap140720.html Explanation: What's happened to our Sun? Nothing very unusual -- it just threw a filament. Toward the middle of 2012, a long standing solar filament suddenly erupted into space producing an energetic Coronal Mass Ejection (CME). The filament had been held up for days by the Sun's ever changing magnetic field and the timing of the eruption was unexpected. Watched closely by the Sun-orbiting Solar Dynamics Observatory, the resulting explosion shot electrons and ions into the Solar System, some of which arrived at Earth three days later and impacted Earth's magnetosphere, causing visible aurorae. Loops of plasma surrounding an active region can be seen above the erupting filament in the ultraviolet image. Over the past week the number of sunspots visible on the Sun unexpectedly dropped to zero, causing speculation that the Sun has now passed a very unusual solar maximum, the time in the Sun's 11-year cycle when it is most active. http://www.nasa.gov/ http://www.nasa.gov/centers/goddard/ http://sdo.gsfc.nasa.gov/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140720 #APOD

This Newfound Species Has The Highest-Pitched Call Recorded

Which it uses to attract mates, natch.<p><i>Supersonus</i> can hit the high notes. One species in this newly discovered genus of katydid hailing from the rainforests of Ecuador and Colombia can produce mating calls of a higher pitch than previously recorded for any arthropod, a vast group that includes …

9 DIY Benches You Need to Make This Weekend

A bench is one of those ultra versatile furniture pieces that’s always nice to have in a home. They provide extra seating for guests and, if nothing else, they’re a fab spot to throw your extra belongings. Whether you place one in the hallway, the entryway, your bedroom, on your patio or in every …

What is NOT Random?