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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Volkin Newsgroups: fr.sci.astronautique Subject: Re: Vitesse possible avec une voile solaire Date: Thu, 7 Dec 2023 10:35:07 +0100 Organization: A noiseless patient Spider Lines: 33 Message-ID: References: <8FwDAw0eI_53rOzbh9F4dMNd1Co@jntp> <05yJWBEsqDuBnMMkeX2gqhmQYxo@jntp> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Injection-Date: Thu, 7 Dec 2023 09:35:16 -0000 (UTC) Injection-Info: dont-email.me; posting-host="3300053c1fc7ecc3e6daf7629da0f8b8"; logging-data="1287753"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/vl0ZTY/DReUK154Y4ItwJ" User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:52.0) Gecko/20100101 Firefox/52.0 SeaMonkey/2.49.2 Cancel-Lock: sha1:1p3nKmZLRvBQg34HLCazElj2MLE= In-Reply-To: <05yJWBEsqDuBnMMkeX2gqhmQYxo@jntp> Bytes: 2124 bp wrote: > Le 06/12/2023 =C3=A0 10:26, Volkin a =C3=A9crit : >=20 >>> quelle peut =C3=AAtre l'acceleration=C2=A0 en prenant comme base 1m2,= un=C2=A0 objet=20 >>> de 1kg ? >> >> A la distance de 1UA du Soleil Wikipedia donne une pression >> de 9,08 =CE=BCN/m2 : >> >> https://en.wikipedia.org/wiki/Radiation_pressure >> >> Si c'est vrai l'acc=C3=A9l=C3=A9ration devrait =C3=AAtre de >> >> a =3D 9,08E-6 N / 1 kg =3D 9,08E-6 m/s2 >> >> Non ? >=20 > Aucune id=C3=A9e=C2=A0 je vais aller voir ce qu'est une unit=C3=A9 Astr= onomique (je=20 > crois que c'est comme =C3=A7a) > Merci UA =3D Unit=C3=A9 Astronomique =3D distance Soleil Terre =3D 150 millions= de km. La pression est sens=C3=A9e =C3=AAtre le carr=C3=A9 de la distance, donc = grosso modo 25 fois plus forte =C3=A0 l'orbite de Mercure, 25 plus faible =C3=A0= l'orbite de Jupiter.