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2. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   Lastly, manufacturers may decide to combine two type numbers into a single name, which their one device can replace, such as: 6DX8/ECL84 (6DX8 and ECL84 being identical devices under different naming schemes) or 6BC5/6CE5 (sufficiently identical devices within the RETMA naming system) and even 3A3/3B2, or 6AC5-GT/6AC5-G (where the single type ...

3. List of Mullard–Philips vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_Mullard–Philips...

   Z70U/7710 – Subminiature, 3 mA avg, 12 mA peak, Gas-filled, cold-cathode DC trigger tetrode, one starter and a primer electrode, positive starter voltage, 4-pin all-glass wire-ended Z71U/7711 – Subminiature, 7 mA avg , 12 mA peak , Gas-filled, cold-cathode DC trigger tetrode, two starters, positive starter voltage, low impedance for audio ...

4. Chicago Pile-1 - Wikipedia

   en.wikipedia.org/wiki/Chicago_Pile-1

   On 12 December 1942, CP-1's power output was increased to 200 W, enough to power a light bulb. Lacking shielding of any kind, it was a radiation hazard for everyone in the vicinity, and further testing was continued at 0.5 W. [ 101 ] Operation was terminated on 28 February 1943, [ 102 ] and the pile was dismantled and moved to Site A in the ...

5. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

6. Longest-lasting light bulbs - Wikipedia

   en.wikipedia.org/wiki/Longest-lasting_light_bulbs

   Thomas Edison designed a bulb that was supposed to last forever, called the Eternal Light, and turned it on on October 22, 1929. The bulb is located in the Edison Memorial Tower at the Thomas Edison Center at Menlo Park, a small museum near the tower in Menlo Park, New Jersey. The tower fell down in 1937, but the bulb's power was supposedly ...

7. How to watch the 2024 Macy’s Thanksgiving Day Parade - AOL

   www.aol.com/watch-2024-macy-thanksgiving-day...

   Here’s what to know about this year’s Macy’s Thanksgiving Day Parade, which will include 17 featured character balloons, 22 floats, 15 heritage and novelty balloons, more than 700 clowns, 11 ...

8. Mortgage companies that borrowers are most satisfied with ...

   www.aol.com/finance/mortgage-companies-borrowers...

   J.D. Power released its 2024 mortgage lender customer satisfaction survey — and the results are surprising. Here are the major changes in lender satisfaction.

9. Sodium-vapor lamp - Wikipedia

   en.wikipedia.org/wiki/Sodium-vapor_lamp

   A high-pressure sodium street light in Toronto A high-pressure sodium-vapor lamp An HPS lamp that isn't entirely off. A sodium-vapor lamp is a gas-discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm. Two varieties of such lamps exist: low pressure and high pressure.