Hydraulic lift is an effective, precise, and quiet tool. It is used to lift the baggage to the aircraft. (photo by Sr. H.)
Hydrometer submerged in water
The hydrometer is designed to measure a density of liquids. The density is shown the liquid surface on the hydrometer's scale.
Hydrometer presented in the picture looks like a broken one - part of it visible above the water surface seems to be disconnected. This is an effect of refraction.
Pluto's Story
- 1930: We have a new planet! ("New York Times")
- 2008: Why is Pluto no longer a planet? ("Universe Today")
- 2014: Wait, what? Pluto a planet again? ("USA Today")
???
Did you know that...
New Jersey ranks fourth
in the number of U.S. patents issued (156,813),
and it’s the only state in the nation
with its own inventors’ hall of fame.
in the number of U.S. patents issued (156,813),
and it’s the only state in the nation
with its own inventors’ hall of fame.
(We not only produce geniuses; we celebrate them.)
Electrostatic machine sparks
An electrostatic machine, or generator, works in a very similar way to the simple rubbing trick (see that post). It collects electrons in one of the cylinders, and removes them from another one; the difference in electric potential causes a spark.
Visualizing magnetic field with small magnets
Small magnets show the magnetic field lines (yellow line in the picture below) 
Subscribe to:
Posts (Atom)