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Crash

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Submitted By MariaRahimNaz
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Mere jern
Højovnen - under renæssancen.
Medførte en mulighed for at øge produktionen af jern. - jern kunne bruges i militærteknologien.
Højovnen er skorstensformet. Der stakkes malm og brændsel (skiftevis) ovenfra og når den derefter tændes og blæses igennem med blæsebælge bliver temp. høj nok til at jernet smelter. Det opnås uden affaldsstoffer. Den kører kontinuert. Blot stakke malm og brændsel, og så tappe smeltet jern og affaldsstoffer hver for sig. Batch process, da man skal grave ovnen ud og derefter bygge en ny ovn op.
Man ved ikke om det Sverige eller Kina, der har fået udvikling til at komme til Europa.
Den fyres med trækul, og svidning af trækul er derfor en vigtig hjælpeindustri for jernproduktionen.
Den er billigere i drift, da man ikke skal køle den op og varme den op hele tiden. Den må dog ikke gå kold, den skal gå i gang hele tiden.) heller ikke genopvarme for at banke slaggen ud af jernet.
Det øgede forbrug af trækul = voldsomt pres på skovene. (da de skulle levere træ til skibe, husholdningen og skibe).

Renæssancen:
Skabte grobund for et nyt tankesæt, hvor enkle og rationelle forklaringer var til at foretrække frem for spekulationer. Katolske kirke fik svært ved at acceptere udviklingen.
Helt tilbage fra oldtiden troede man på geocentrisk verdensbillede.
1543- Kopernikus hævede et heliocentrisk verdensbillede. Grundet opdagelsesrejserne, hvor Columbus navigerede efter stjernerne og kom til Amerika i stedet for Indien. Derfor en præcis forståelse af stjernernes placering og bevægelse på himlen. - Hans skrifter blev bandlyste af kirken.
Så kom Tycho Brahe. Satte nye standarder for astronomisk videnskab.
Johanes Kepler kunne ud fra Brahes data af planeternes position give et matematisk grundlag for det heliocentriske verdensbillede.
Galilei fandt ud af at Jupiter havde fire kredsende måner og det var ikke kun jorden som havde en måne i kredsløb. Jordens særlige status forsvandt væsentligt.
Kirken var ikke kun imod nye erkendelser. - gav viden omkring mekaniske forhold. Optikken som videnskaben.
Gav lighedorienteret menneskesyn.

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