People with prolonged, frequent, or close contact with people with TB are at particularly high risk of becoming infected, with an estimated 22% infection rate. A person with active but untreated tuberculosis may infect 1015 (or more) other people per year. Transmission should occur from only people with active TB those with latent infection are not thought to be contagious. The probability of transmission from one person to another depends upon several factors, including the number of infectious droplets expelled by the carrier, the effectiveness of ventilation, the duration of exposure, the virulence of the M. tuberculosis strain, the level of immunity in the uninfected person, and others. The cascade of person-to-person spread can be circumvented by segregating those with active ("overt") TB and putting them on anti-TB drug regimens. After about two weeks of effective treatment, subjects with nonresistant active infections generally do not remain contagious to others. If someone does become infected, it typically takes three to four weeks before the newly infected person becomes infectious enough to transmit the disease to others.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How long is someone contagious if they are recently infected?
Ah, so.. unanswerable

New chemical glass compositions or new treatment techniques can be initially investigated in small-scale laboratory experiments. The raw materials for laboratory-scale glass melts are often different from those used in mass production because the cost factor has a low priority. In the laboratory mostly pure chemicals are used. Care must be taken that the raw materials have not reacted with moisture or other chemicals in the environment (such as alkali or alkaline earth metal oxides and hydroxides, or boron oxide), or that the impurities are quantified (loss on ignition). Evaporation losses during glass melting should be considered during the selection of the raw materials, e.g., sodium selenite may be preferred over easily evaporating SeO2. Also, more readily reacting raw materials may be preferred over relatively inert ones, such as Al(OH)3 over Al2O3. Usually, the melts are carried out in platinum crucibles to reduce contamination from the crucible material. Glass homogeneity is achieved by homogenizing the raw materials mixture (glass batch), by stirring the melt, and by crushing and re-melting the first melt. The obtained glass is usually annealed to prevent breakage during processing.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is the reason for crushing the glass and melting it again?
Ah, so.. homogeneity

The Dutch Republic, also known as the Republic of the Seven United Netherlands (Republiek der Zeven Verenigde Nederlanden), Republic of the United Netherlands or Republic of the Seven United Provinces (Republiek der Zeven Verenigde Provincien), was a republic in Europe existing from 1581, when part of the Netherlands separated from Spanish rule, until 1795. It preceded the Batavian Republic, the Kingdom of Holland, the United Kingdom of the Netherlands, and ultimately the modern Kingdom of the Netherlands. Alternative names include the United Provinces (Verenigde Provincien), Federated Dutch Provinces (Foederatae Belgii Provinciae), and Dutch Federation (Belgica Foederata).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What are some other names the Batvian Republic is known by?
Ah, so..
unanswerable