Water boils when the water vapour pressure is equal to the atmospheric pressure that is 100 degree centigrade and atmospheric pressure is 1. At vacuum, there is no pressure boiling should occur at low temperature only.
Definition of Public Health Nursing. Public health nursing is the practice of promoting and protecting the health of populations using knowledge from nursing, social, and public health sciences. Public health nursing is a systematic process by which: The health and health care needs of a population are assessed in order to identify subpopulations, families and individuals who would benefit from health promotion or who are at risk of illness, injury, disability or premature death.
Health promotion is the process of enabling people to increase control over the determinants of health and thereby improve their health. Participation is essential to sustain health promotion action.The Ottawa Charter identifies three basic strategies for health promotion.ccording to the World Health Organization, Health promotion is the process of enabling people to increase control over, and to improve their health.