This may include a random charged plate close to the ground, a pair of parallel conducting wires, etc. All of the above have capacitance. But all electronics books, clearly define a capacitor as a passive two-terminal electrical component used to store electrical energy temporarily in an electric field. Also, it is quite useful to think of a capacitor as storing charge, in order to understand its behavior.
The first immunizations for tetanus, diphtheria and pertussis (the DTaP shots) start when kids are only 2 months old (definitely no earlier than 6 weeks). Adolescents get a booster Tdap shot at around 11-12 years (if they miss it, it's OK for them to get Tdap between 13-18 years). Adults should get a Tdap shot for one of their tetanus boosters. The others will all be Td shots. Remember, you need a tetanus booster every 10 years. If you are over 65 years old you might not need the Tdap shot, but you can still get one. You should talk to your doctor.
Birth through 6 years. DTaP is routinely recommended at 2, 4, and 6 months, at 15 through 18 months, and at 4 through 6 years. 7 through 10 years. Tdap is recommended for children ages 7 through 10 years who are not fully vaccinated (see note 1) against pertussis:9 years and older. Any adult 19 years of age and older who has not received a dose of Tdap should get one as soon as feasible â to protect themselves and infants. This Tdap booster dose can replace one of the 10-year Td booster doses.