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- ...lope and the ambient air. (This is in contrast to the more common use of [[Helium]] to provide lift.) Currently all thermal airships use hot air, as used in Thermal airships have the advantage of being less expensive than [[helium]]-based airships. They are also routinely deflated after each flight and c4 KB (586 words) - 06:17, 12 September 2013
- {{r|Helium}}1 KB (164 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (165 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (175 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (169 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (184 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (184 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (185 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (185 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (155 words) - 17:08, 22 March 2024
- {{r|Helium}}1 KB (188 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (189 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (173 words) - 05:43, 6 March 2024
- ...[elementary charge]]. An α-particle is in fact the nucleus of the [[helium]]-4 [[isotope]], consisting of two [[proton]]s and two [[neutron]]s, thus h ...ption required </ref> in which it was explained that α-particles are helium atoms that have lost their negative charge. In 1908 it was not yet known th3 KB (412 words) - 20:02, 20 September 2021
- {{r|Helium}}1 KB (194 words) - 12:49, 15 March 2024
- {{r|Helium}}1 KB (193 words) - 09:18, 6 March 2024
- {{r|Helium}}1 KB (197 words) - 12:49, 15 March 2024
- {{r|Helium}}1 KB (199 words) - 12:57, 15 March 2024
- {{r|Helium}}1 KB (199 words) - 12:57, 15 March 2024
- {{r|Helium}}1 KB (202 words) - 09:18, 6 March 2024