The value of a Hermle grandfather clock can vary widely depending on factors such as its age, condition, style, and any unique features it may have. Generally, a new Hermle grandfather clock can range in price from several hundred to several thousand dollars. Vintage or antique Hermle grandfather clocks may have even higher value, especially if they are in good working condition and have been well-maintained. It's best to have a professional appraiser assess the specific clock to determine its current market value. **

No, silent letters in English have not always been silent. Many silent letters were once pronounced in Old English or Middle English, but over time, the pronunciation of these letters changed or dropped out of use. For example, the "k" in "knight" was once pronounced, but it eventually became silent. The evolution of language and changes in pronunciation have led to the silent letters we see in English today. **

The cost of a 3-axis CNC milling machine from Hermle can range from $100,000 to $500,000, depending on the specific model and features. On the other hand, a 5-axis CNC milling machine from Hermle can cost anywhere from $200,000 to over $1 million, depending on the size, capabilities, and additional features. These machines are high-precision and high-performance, which contributes to their higher cost compared to other types of milling machines. **

Pumps can vary in noise level depending on their size, design, and the type of fluid being pumped. Generally, smaller pumps such as those used in household appliances or aquariums tend to be quieter. Larger industrial pumps, on the other hand, can produce more noise due to their higher power and flow rates. To reduce noise, pumps can be placed on vibration isolators or have soundproofing materials installed around them. Overall, pumps can range from being nearly silent to producing a noticeable hum or vibration. **

Silent letters are letters in words that are not pronounced when the word is spoken. These letters are present in the spelling of the word but do not contribute to the sound of the word. Silent letters can be found in various languages and are often a result of historical changes in pronunciation or the influence of other languages. Examples of silent letters in English include the 'k' in 'knight' and the 'b' in 'doubt'. **

Silent switches are mechanical keyboard switches that are designed to produce minimal noise when pressed. They are popular among users who prefer a quieter typing experience, such as in office environments or shared workspaces. Silent switches typically have dampening materials or designs that reduce the sound of the key press without compromising on the tactile feedback or typing performance. **

Silent films are movies that were produced before the invention of synchronized sound in cinema. These films relied on visual storytelling, intertitles, and accompanying live music to convey the plot and emotions to the audience. Silent films were popular from the late 19th century to the early 1930s, with iconic actors such as Charlie Chaplin and Buster Keaton making their mark in this era. Despite the lack of spoken dialogue, silent films were able to captivate audiences and convey powerful stories through the art of visual storytelling. **

Electric cars are generally quieter than traditional gasoline-powered cars because they do not have a loud combustion engine. However, they are not completely silent. Electric cars still produce some noise from the tires on the road, wind resistance, and other mechanical components. To address safety concerns for pedestrians and cyclists, many electric cars are now equipped with artificial sound generators that produce noise at low speeds to alert others of their presence. **