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The Florence Siphon. The vacuum siphon coffee brewing method dates back to the 1840s.

The Florence Siphon

It produces some of the cleanest, smoothest-tasting coffee of any method. Commercial vacuum pots are available, but I wanted to heighten the drama of vacuum brewing by taking it into the realm of the mad scientist’s lab. Thus the Florence Siphon was born! After studying original patent drawings and existing devices, I identified these key features: Water is heated in a boiling flask that has a tube leading to a second vessel containing ground coffee.The tube must have a filter, to allow the water to flow through but not the grounds. One drawback to early vacuum brewers was the constant danger of exploding glass. Filtration was another challenge. I assembled my funnel, stopper, tubing, filter, and a beaker for the grounds. The water began to bubble quickly, and soon went straight up the glass tube and over to the grounds. I stirred up the slurry with a stick and then waited with great excitement.

The Florence Siphon. The vacuum siphon coffee brewing method dates back to the 1840s.

The Florence Siphon

It produces some of the cleanest, smoothest-tasting coffee of any method. Commercial vacuum pots are available, but I wanted to heighten the drama of vacuum brewing by taking it into the realm of the mad scientist’s lab. Thus the Florence Siphon was born! After studying original patent drawings and existing devices, I identified these key features: Water is heated in a boiling flask that has a tube leading to a second vessel containing ground coffee.The tube must have a filter, to allow the water to flow through but not the grounds.

One drawback to early vacuum brewers was the constant danger of exploding glass. Filtration was another challenge. I assembled my funnel, stopper, tubing, filter, and a beaker for the grounds. The water began to bubble quickly, and soon went straight up the glass tube and over to the grounds. dSqUgQOT2Qayw1gL.huge (JPEG Image, 1600 × 1200 pixels) - Scaled (52%) DIY wooden picture. Unusual (and fun!) Date Ideas. Sky This Month :Night Sky Observer. Meteor Showers (International Meteor Organization) A listing of meteor showers that occur throughout the year. Recent International Astronomical Union Circulars This page lists the dates of issue and the titles of the items on the twenty most-recent IAUCs.

Individual items can be displayed by selecting the relevant title. International Astronomical Union: Astronomy Headlines This page contains brief information on recent astronomical discoveries as reported in the International Astronomical Union Circulars (IAUCs) and the Minor Planet Electronic Circulars (MPECs), as well as links to ephemerides and orbital elements for comets and minor planets. Observable Comets Lists links to orbital elements and ephemerides of (potentially) observable comets Approaching Comets This website is devoted to monitoring all newly detected unknown objects and identified comets which have the potential for becoming significant events in the near future. BBC Space Site The BBC's dedicated Space website. Homegrown Evolution. Ninety-five Lessons in Ornamental Penmanship - C.W. Jones. <font face="Times New Roman" size="6">Lessons in Dashy Writing<br></font><i><font face="Times New Roman" size="5">F.B. Courtney</font></i>

Airsurfing an Origami Hang Glider. YouTube link.

Airsurfing an Origami Hang Glider

This video provides an overview of how to make an origami hang glider, and how to propel it around a room by creating a wave of air. The project apparently was developed as a teaching tool for students in school, but it is so "neat" that it should also appeal to adults. Those wishing to access detailed instructions for these hang gliders (and a wide variety of other "science toys") should visit the link below. Science Toy Maker home page. Chess Tutorials & Lessons / Free Online Chess Tutorials & Paid / Private Chess Lessons [Chessopolis > Chess Links] Want to learn chess?

Chess Tutorials & Lessons / Free Online Chess Tutorials & Paid / Private Chess Lessons [Chessopolis > Chess Links]

Here is a great guide. 50 Chess Games for Beginners - A series of interactive, annotated chess games to teach basic principles. A.J.’s Beginner Chess Course - A tutorial for beginners. Anticomputer Chess - Sick of getting beaten by your computer? Check out this page from Rafael Vasquez. Chess Corner - Offers a good tutorial for (absolute) beginners, and an introduction to the main tactical themes. Chess Is Fun - Lessons from correspondence champion Jon Edwards. chessKIDS Academy - Offering instruction (lots of it) specifically to help young kids learn chess. Chess Kit - Site focusing on chess training with advice on analysis plus lessons in tactics and strategy. November Messier Tour.