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The krytron is a cold-cathode gas-filled tube intended for use as a very high-speed switch, somewhat similar to the thyratron. It consists of a sealed glass tube with four electrodes. A small triggering pulse on the grid electrode switches the tube on, allowing a large current to flow between the cathode and anode electrodes.
The cost of a new YouTube TV base plan subscription is increasing from $72.99 to $82.99, starting Dec. 12, 2024, for new users, the company … YouTube TV Raises Price 14%, to $83 per Month ...
YouTube TV is an American Internet Protocol television service operated by YouTube, a subsidiary of Google.Announced on February 28, 2017, [2] the virtual multichannel video programming distributor offers a selection of live linear channel feeds and on-demand content from more than 100 television networks (including affiliates of the Big Three broadcast networks (such as ABC, NBC and CBS), Fox ...
After launching in 2017, YouTube TV gained popularity for its low-cost entertainment service that attracted many people to cut the cord on their cable. Users can watch anything they wanted for $35 ...
Guitar slide made of borosilicate glass. Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to thermal shock than any other common glass.
Quartz glassware is occasionally used in chemistry laboratories when standard borosilicate glass cannot withstand high temperatures or when high UV transmission is required. The cost of production is significantly higher, limiting its use; it is usually found as a single basic element, such as a tube in a furnace, or as a flask, the elements in ...
3 – Tube used in TV broadcasting equipment; 4 – Tube for radiocommunication equipment with unbalanced modulation; 5 – Modulator or pulse tube; The second digit after the "/" is sequentially assigned. Examples: Q01 – Power tetrode up to 125 MHz, 0.1 kW (=100 W) Q3.5 – Power tetrode up to 220 MHz, 3.5 kW
Ultra low expansion glass has an coefficient of thermal expansion of about 10 −8 /K at 5–35 °C. [2] It has a thermal conductivity of 1.31 W/(m·°C), thermal diffusion of 0.0079 cm 2 /s, a mean specific heat of 767 J/(kg·°C), a strain point of 890 °C [1634 °F], and an estimated softening point of 1490 °C [2714 °F], an annealing point ...