Ingenieria y Tecnologia

Engineering and Technology
These articles include both historical and tutorial matters

General
· A Source Book for Rule Collectors: information on boxwood folding rules, sectors, Gunter's lineand many more things.
· Monge's Procedure: Descriptive Geometry, an excellent visualization tool.
· The Slide Rule: once, it identified the engineer.
· Jam Nuts: it isn't obvious how to use them,and a familiar illustration is incorrect. Also, a discussion of engineering drawing texts.
· An HP-48 Companion: help for the absent-minded with everyday arithmetic.
· HP-48G Notes: built-in utilitiesof the HP-48.
· Matrices and the HP-48: working with matrices and vectors.
· Old Units of Length: a look at the arbitrary units devised through millennia for the measurement of length
· Cannon andGunpowder: their history and lore
· Paper: a little paper lore
· The Quartz Wall Clock: what's inside
· History of Canals: world-wide
· History of Roads and Coaching: in the U.S. and Britain
·Kites, a brief history of this Chinese invention
· Psigate is a resource for web information on physical sciences and engineering.
Civil and Structural
· Building Collapse, why the World TradeCenter towers fell so rapidly
· The Transporter Bridge at Newport, South Wales
· Elasticity and its Application to Beams
· Beams--the remarkable theory of beams
· Rivets, bolts and the design of steelconnections
· Buckling is a primary mode of failure
· Early Development of Truss Bridges in America
· Rational Design of truss bridges
· The Burr Truss, an American wooden trussed arch bridge
·The Bollman Truss, a suspension truss
· Cargo Ships, general characteristics, with the Victory ships as an example.
· The Vortex, an exploration of this interesting type of fluid motion
·Hydrostatics, an introduction
· Bernoulli's Equation
· Open-Channel Flow
· Turbines and Power from Water
· Fans and Power from Wind
· Hydrodynamics in Flatland
· Orifices, coefficient of discharge with...