Questions and answers from and about nixie tubes and the Lamina nixie clocks

What is a nixie tube?
Where can I buy a Lamina Nixie Clock?
Do you ship worldwide?
What kind of power supply do i need?
What is the lifetime of a nixie tube?
Can I replace a broke tube?
What type of nixie tubes are in the Lamina nixie clocks?
What kind of materials are used to build the clocks?
Do any of the clocks have an alarm?
Is the Lamina B.LA.C.K clock made from wood?
How accurate the clocks?