Adam is one of a rapidly increasing group known as "podcasters", whose shows are created to be heard on iPods or other MP3 players. Formerly an MTV video-jock, he is man who created "iPodder" program. Downloadable from www.iPodder.org, this easy to use software allows you to decide which audio feed you wish to subscribe to. This is then automatically added to your iPod or MP3 player to listen to when you decide.

The great thing about Podcasting is that it allows listeners to download their favourite shows automatically. There are now tons of "advertisement-free" radio channels for listeners to subscribe to, with more emerging every day.

The function of thickener, metallic soap, is to hold lubricating oil in a semi-liquid state for easier handling.

When there is rise in temperature, oil bleeds out from thickener and functions as a lubricating agent. When temperature drops again, thickener soaks up oil again to become semi-solid once more.

The type of grease chosen for a particular bearing lubrication application must therefore be chosen very carefully. High temperature grease used in low temperature applications may cause bearings to seize due to lack of lubrication because oil does not bleed out. The common types of grease in use for rolling contact bearings are calcium, sodium and lithium greases.

Calcium Soap Greases

These do not dissolve in water. They are recommended for installations exposed to water at temperatures below 60 degree C. They offer good protection against salt water in marine environments.

Sodium Soap Greases

Also called soda greases, they may be utilized over a wide range of temperatures up to 120 degree C. However, if too much water penetrates into bearings, there is a risk that grease will be washed out and lubricating properties become deteriorated.

Lithium Soap Greases

These have excellent resistance to high temperatures. They can also be used over a wider range of temperatures from -50 to 150 degree C. They are not water soluble.