We all, working in our studios all day (and certain nights of course), may use a microwave oven to heat up a noodle soup or some sweet potatoes. While some of my caring friends insist I should not, I enjoy the convenience. But is it really save!?
After reading “But Really, Can You Stand In Front Of The Microwave?” I can pass the all-clear on microwave ovens on to you. That is: If you ensure the oven is truly intact and clean at the door so no radiation may reach you!
This quote from the article got the artist in me: “people tend to be more worried about man-made types of radiation rather than cosmic radiation from space or radon from the soil”. :)
I like the simple representation, emphasizing the differentiation between our planets. All following illustrations by Vadim Sadovski – Space art.
Did you know?
When Neil Armstrong first walked on the moon in 1969, he carried a piece of muslin fabric from the left wing of the original 1903 Wright Flyer in his spacesuit pocket.
There was also a piece of wood from the airplane’s left propeller.
The 1903 Wright Flyer was the first successful powered aircraft while the Apollo 11 spacecraft made the first manned mission to the moon.
Both objects are in the collection of the National Air and Space Museum in Washington.
Images via collectspace.com and firstflights.blogspot.de
"Phototaxis is an organism’s automatic movement toward or away from light. So a cockroach has negative phototaxis, because it’s always scuttling into dark corners while a moth has positive phototaxis because of it’s preference for bright lights.
Why are they attracted to bright lights?
We have several theories but no definite answers. Here are the theories:
- Moths use the moon as a primary reference point to travel. So it’s attraction to the light maybe related to that orientation and cause disorientation.
- Moths may see flying towards the light as advantageous and safer than flying somewhere dark.
Did you know moths are sensitive to ultra-violet light? A white light will attract more than than a yellow one."
More information check this out
In case you observe a strange, colorful vortex in the sky and think of an UFO, please read this before. :-)
"Twilight phenomenon is produced when unburned particles of missile or rocket propellant and water left in the vapor trail of a launch vehicle condenses, freezes and then expands in the less dense upper atmosphere. The exhaust plume, which is suspended against a dark sky is then illuminated by reflective high altitude sunlight, which produces a spectacular, colorful effect when seen at ground level. The phenomenon typically occurs with launches that take place either 30 to 60 minutes before sunrise or after sunset when a booster rocket or missile rises out of the darkness and into a sunlit area, relative to an observer’s perspective on the ground.
This phenomenon usually produces a cloud of green, blue, white and rose colored hues which takes on a corkscrew appearance as it is whipped around by wind currents. It is seen within two to three minutes after a launch has occurred. Depending on weather conditions, it could remain in the sky for up to half an hour before dispersing.
Pre-dawn launches are probably less spectacular than their dusk counterparts. During dusk launches, the sunlight shines through the exhaust plume. Pre-dawn launches, on the other hand, produce a more subtle display because the sunlight directly reflects off the plume."
"This is a remarkable record of the Sun's yearly journey through planet Earth's sky, made with planned multiple exposures captured on a single frame of a film. Exposures were made at the same time of day (9:00am local time), capturing the Sun's position on dates from January 7 through December 20, 2003. The multiple suns trace an intersecting curve known as an analemma."
An analemma is caused by the 23.5 degree tilt of the earth and the elliptical orbit.
Other planets produce, due to their different tilts and elliptical orbits, different looking analemmas. The image below is a simulation from Mars – called a Martian Analemma:
"It shows the late afternoon Sun that would have been seen from the Sagan Memorial Station once every 30 Martian days beginning on Pathfinder's Sol 24 (July 29, 1997). Slightly less bright, the simulated Sun is only about two thirds the size as seen from Earth, while the Martian dust, responsible for the reddish sky of Mars, also scatters some blue light around the solar disk."
Via TWAN and NASA
Well, people who have grown up with Celsius, they are afraid of Fahrenheit with its high temperatures.
In this case… knowledge is power… let us compare F, °C and K:
"Fahrenheit is based on a brine scale and the human body. The scale is basically how cold does it have to be to freeze saltwater (zero Fahrenheit) to what temperature is the human body (100-ish Fahrenheit, although now we know that’s not exactly accurate). Fahrenheit was designed around humans.
Celsius and Kelvin are designed around the natural world.
Celsius is a scale based on water. Zero is when water freezes, 100 is when water boils.
Kelvin uses the same scale as Celsius (one degree, as a unit, is the same between the two), but defines zero as absolute zero, which is basically the temperature at which atoms literally stop doing that spinning thing. Nothing can exist below zero Kelvin. It’s the bottom of the scale.
Fahrenheit: what temperatures affect humans
Celsius: what temperatures affect water
Kelvin: what temperatures affect atoms."
Via workman tumblr