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ISS Expedition 47 Success!
We hope the flat-earthers are paying attention. Humanity has one again passed your imaginary ‘firmament’.
Today, humanity once again left this tiny fragile world. Photo at right shows Soyuz spacecraft on final approach to the International Space Station carrying Jeff Williams, Alexey Ovchinin and Oleg Skripochka. Let us wish them well as they begin their adventure on the ISS.
The following is a…
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Project finished. Using 2 6SN7GT tubes. It can use plug-in coils from the original Knight Radio kit. (Thanks to a socket found at a recent hamfest)
http://www.youtube.com/watch?feature=player_embedded&v=eVI3623e6ac
Return of Flat Out Stupid: SpaceX Edition Remember 'Russianvids'? He was the fellow that tried to disprove a spherical Earth by pouring water on a tomato.
Robert DeNiro: Why He Wants Anti-Vax Film Shown Robert De Niro, a co-founder of the Tribeca Film Festival, released a statement Friday on the film festival’s Facebook page in which he explains why he wants “Vaxxed” to be shown.
Ken Ham the Anti Science Sham: Ark Encounter
Well, it’s time to take a look at Ken Ham’s Ark Encounter. After the video, we’ll elaborate on a few of the details. Ken’s Claims: Built from the specs taken directly out of the bible. Mr. Ham usually fails to mention that the bible was pretty light on specs. The only information given is the following: Make thee an ark of gopher…
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Iridology: More Woo for Profit!
SDHoS would like to thank Austin James for bringing this to our attention.
Iridology (also known as iridodiagnosis or iridiagnosis) is an alternative medicine technique whose proponents claim that patterns, colors, and other characteristics of the iris can be examined to determine information about a patient’s systemic health.
Origins
Proponents of iridology attribute its development to Ignatz…
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Pi Guides the Way
It may be irrational but pi plays an important role in the everyday work of scientists at NASA.
What Is Pi ?
Pi is the ratio of a circle’s circumference to its diameter. It is also an irrational number, meaning its decimal representation never ends and it never repeats. Pi has been calculated to more than one trillion digits,
Why March 14?
March 14 marks the yearly celebration of the mathematical constant pi. More than just a number for mathematicians, pi has all sorts of applications in the real world, including on our missions. And as a holiday that encourages more than a little creativity – whether it’s making pi-themed pies or reciting from memory as many of the never-ending decimals of pi as possible (the record is 70,030 digits).
While 3.14 is often a precise enough approximation, hence the celebration occurring on March 14, or 3/14 (when written in standard U.S. month/day format), the first known celebration occurred in 1988, and in 2009, the U.S. House of Representatives passed a resolution designating March 14 as Pi Day and encouraging teachers and students to celebrate the day with activities that teach students about pi.
5 Ways We Use Pi at NASA
Below are some ways scientists and engineers used pi.
Keeping Spacecraft Chugging Along
Propulsion engineers use pi to determine the volume and surface area of propellant tanks. It’s how they size tanks and determine liquid propellant volume to keep spacecraft going and making new discoveries.
Getting New Perspectives on Saturn
A technique called pi transfer uses the gravity of Titan’s moon, Titan, to alter the orbit of the Cassini spacecraft so it can obtain different perspectives of the ringed planet.
Learning the Composition of Asteroids
Using pi and the asteroid’s mass, scientists can calculate the density of an asteroid and learn what it’s made of–ice, iron, rock, etc.
Measuring Craters
knowing the circumference, diameter and surface area of a crater can tell scientists a lot about the asteroid or meteor that may have carved it out.
Determining the Size of Exoplanets
Exoplanets are planets that orbit suns other than our own and scientists use pi to search for them. The first step is determining how much the light curve of a planet’s sun dims when a suspected planets passes in front of it.
Want to learn more about Pi? Visit us on Pinterest at: https://www.pinterest.com/nasa/pi-day/
I got bored and went digging through the box of tubes again... Found a nice looking 6F6 GT and a 6Y6 GT, and kind of ran off in high spirits and decided a little broadcast band receiver would be a fun project. For this project I wanted them outside the box (CD case) where I could see 'em. Mounted all the heavy components. (back-to-back Radio Shack 12V CT transformers to make what amounts to an isolation transformer, picking off filament power between the two... Audio output transformer...) I haven't even decided if it's going to be a regenerative or something that requires less fussing with during operation. Any suggestions, anyone?
'Proofs' 6 though 10 of Eric Dubay's '200 Proofs the Earth is Not A Spinning Ball' refuted.
Exposing the misinformation of science-deniers, moon-hoaxers, flat-earthers and the rest of the tinfoil hat wearing crowd at www.sciencedenierhallofshame.com
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