A variety of indicators change color at various pH levels. A properly selected acid-base indicator can be used to visually indicate the approximate pH of a sample. An indicator is usually some weak organic acid or base dye that changes colors at definite pH values.
In United States politics, a government shutdown occurs when Congress and the President fail to pass appropriations legislation funding government operations and agencies. In this case, the current interpretation of the Antideficiency Act requires that the federal government begin a shutdown of the affected activities involving the furlough of non-essential personnel and curtailment of agency activities and services. Since 1976, when the current budget and appropriations process was enacted, t
From October 1 to October 17, 2013, the United States federal government entered a shutdown and curtailed most routine operations because neither legislation appropriating funds for fiscal year 2014 nor a continuing resolution for the interim authorization of appropriations for fiscal year 2014 was enacted in time. Regular government operations resumed October 17 after an interim appropriations bill was signed into law. During the shutdown, approximately 800,000 federal employees were indefinite