Kurtagag@lemmy.ca to Asklemmy@lemmy.mlEnglish · 8 个月前What was a fact taught to you in school that has been proven false during your lifetime?message-squaremessage-square214fedilinkarrow-up1169arrow-down11
arrow-up1168arrow-down1message-squareWhat was a fact taught to you in school that has been proven false during your lifetime?Kurtagag@lemmy.ca to Asklemmy@lemmy.mlEnglish · 8 个月前message-square214fedilink
minus-squareKacarott@aussie.zonelinkfedilinkarrow-up33arrow-down1·8 个月前That blood is actually blue until it gets in contact with air
minus-squareAppoxo@lemmy.dbzer0.comlinkfedilinkarrow-up8·8 个月前Easy to proof: Vaccumated capsule to draw blood. No contact with air and still red.
minus-squareMasterFlamingo@lemm.eelinkfedilinkEnglisharrow-up4·edit-28 个月前I remember my science teacher in seventh grade saying this. I was just very confused because my mother who was a nurse said it was just a dark red.
That blood is actually blue until it gets in contact with air
Easy to proof: Vaccumated capsule to draw blood.
No contact with air and still red.
I remember my science teacher in seventh grade saying this. I was just very confused because my mother who was a nurse said it was just a dark red.