A small charge that burns furiously when given sufficient electrical current (Explosive primer) or when struck with force (percussion caps) that ignites the main combustable substances in explosives or ammunition
The first coat of paint in a paint job that consists of two or more coats; also the paint used for such a first coat
A device used to provide a flame for the purpose of setting fire to a propellant charge Also called an "igniter " Primers are divided into two types, depending upon the type of ammunition used by the gun: 1) Case and 2) Lock Case primers, as their name implies, are used for guns firing case ammunition Lock primers are used for bag guns, and are inserted by hand into the firing lock of the gun Primers are also divided into three classes, depending upon the method of firing: 1) Percussion, 2) Electric and 3) Combination Percussion primers are fired by the mechanical impact of a firing pin Electric primers are fired by passing a current through a resistance element surrounded by an initiating mixture Combination primers may be fired by either of these methods, which allows for a mechanical backup if the electric supply system of the gun fails
Nucleotides used in the polymerase chain reaction to initiate DNA synthesis at a particular location
The small cap containing a detonating mixture used to ignite the powder charge in the case
Originally, a small prayer book for church service, containing the little office of the Virgin Mary; also, a work of elementary religious instruction
A small segment of DNA which binds to a complementary strand of DNA Primers are necessary to start the DNA polymerase enzyme and therefore are necessary in PCR
Special primer paints designed for use under wallcoverings, often used in place of sizing materials
The first layer of a coating system Applied to an unpainted surface Its' role is to protect the substrate and to prepare it for the application of a surfacer or topcoat It must therefore have above all, excellent adhesion to the substrate and to the coating which will follow
{i} study book for teaching fundamental concepts and skill; cap or other object used to detonate explosives
a pre-existing DNA strand bound to the template DNA to which nucleotides must be added during DNA synthesis
First coat of paint applied to a surface Such paints are designed to provide adhesion to new surfaces or are formulated to meet the special requirements of the surfaces Most textile paints won't attach to a primer
Short pre-existing polynucleotide chain to which new deoxyribonucleotides can be added by DNA polymerase
The ignition component of a cartridge, generally made up of a metallic fulminate or (currently) lead styphnate