--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/+utils/+const/@physics/physics.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,31 @@
+% PHYSICS class that defines common physical constants.
+% 
+% The usage of these utils it is now deprecated and will be removed in future releases.
+% Please use the syntax 
+% >> plist(plist('Built-In', 'physical_constants')).find('<constant_name>'); instead!
+% 
+% M Hewitson 08-08-08
+% 
+% $Id: physics.m,v 1.5 2011/07/06 06:41:15 mauro Exp $
+% 
+
+classdef physics
+  properties (Constant = true)
+    c         = 299792458;           % m s^-1
+    epsilon0  = 8.854187817e-12;     % F m^-1
+    mu0       = 4*pi*1.e-7;          % N A^-2
+    h         = 6.62606896e-34;      % J s
+    G         = 6.67428e-11;         % m^3 kg^-1 s^-2
+    e         = 1.602176487e-19;     % C
+    kB        = 1.3806504e-23;       % J K^-1
+    
+    dep       = deprecation_message();
+    
+  end
+end
+
+function out = deprecation_message()
+  out = ['The usage of these utils it is now deprecated and will be removed in future releases. ' ...
+    'Please use the syntax '' plist(plist(''Built-In'', ''physical_constants'')).find('' constant_name ''); '' instead!'];
+  disp(out);
+end