Links for 11 Dec 2005

• You can never have too many recipes for homemade ballistics gel.
• The hardest math class I took in college was Differential Equations and Boundary Value Problems. We spent a surprising amount of our time talking about the ways that Slinky toys move. You can skip the theoretical work, and just go mess with a spring network with damping.
• With a name like United Nuclear, you know it's a cool company. With a product like Neodymium magnets, you may be done with your holiday shopping early.
• Wonderful photographs from the European Space Agency's Hubble team.
• Nature, red in tooth and claw.
• Speed up your Windows installation.