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Bug in interpreting units in UnitConvert

POSTED BY: Sander Huisman
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POSTED BY: Terrence Honan
Glenn Carlson
Glenn Carlson
Posted 12 years ago
POSTED BY: Glenn Carlson
Glenn Carlson
Glenn Carlson
Posted 12 years ago
POSTED BY: Glenn Carlson

The premise of the clunky unit discovery system is that one shouldn't need to know the precise form of the unit. It should correctly interpret these things. For instance, "Feet", "Foot", "feet", "foot" and even "Foots" work. "MicroMeter" should work.
POSTED BY: Terrence Honan
POSTED BY: Isaac Abraham
POSTED BY: Sander Huisman

Yes, that seems to be a problematic interpretation. "Micrometers" works fine:

In[3]:= UnitConvert[Quantity[0.0007, "Inches"], "Micrometers"]

Out[3]= Quantity[17.78, "Micrometers"]
POSTED BY: Ilian Gachevski
POSTED BY: Sander Huisman
POSTED BY: Ilian Gachevski

That is a very good find! So the bug is in Wolfram|Alpha, not in Mathematica. Thanks for having a look, it must be quite complicated the entire code...

But to interpret as a pressure is completely wrong. One has dimensions meter, and one has dimensions of Pascal or kg/(m*s^2). I think this is just a bug, i've never seen micrometer be interpreted as micrometers of mercury...
POSTED BY: Sander Huisman
POSTED BY: Terrence Honan
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