Bugs: Difference between revisions

Bugs (view source)

382 bytes added , 12 February 2007

"pressure-sea-level-inhg"

70

edits

@@ Line 43: / Line 43: @@
 it in ways that the altimeter setting should be used.
-This is at least a misnomer, and probably a misconception.
+For some people this may be merely a misnomer, but for
-The altimeter setting is '''not''' the same thing as the
+others it is clearly a misconception, as recent events
-sea-level pressure.  The altimeter setting is something
+have shown.
+The fact is, the altimeter setting is '''not''' the same
+thing as the sea-level pressure, especially when the
+airmass has a non-standard temperature profile.
+The altimeter setting is something
 else;  it is properly called the altimeter setting.  It
 is also properly called the QNH, although private pilots
@@ Line 51: / Line 56: @@
 terminology.
-This variable needs to be expunged and replaced with
+There needs to be a facility whereby routines that need
-something else, something with a correct name and
+the altimeter setting can obtain the altimeter setting.
-with correct semantics.
+Correct altimetry formulas may be found on the [http://www.av8n.com/physics/altimetry.htm jsd altimetry page].
+Existing code that refers to "pressure-sea-level-inhg"
+needs to be reviewed, to separate proper references
+from misconceived references.
 ==== Z-buffer burn-through. ====