Author
Forum Elite

Posts: 1552
Posted: Sat Jul 28, 2018 7:05 am

Can you see the Sea of Crises with your naked eye?

The size of Mare Crisium = 345 miles
The average distance to Mare Crisium = 238,855 miles = 30 "earths" away

The distance from Montreal to Toronto = 336 miles

 DrCaleb CKA Moderator Posts: 37158 Posted: Mon Jul 30, 2018 6:43 am   What's a 'mile'?
 BartSimpson CKA Moderator   Posts: 65450 Posted: Mon Jul 30, 2018 8:15 am   DrCaleb wrote:What's a 'mile'? A mile is a measure of distance equal to 8.7 stadia.
 DrCaleb CKA Moderator Posts: 37158 Posted: Mon Jul 30, 2018 8:31 am   BartSimpson wrote:DrCaleb wrote:What's a 'mile'? A mile is a measure of distance equal to 8.7 stadia.Ah yes, 320 rods to the mile, or ~44 rods to the stadia. (I wonder how many would know that without looking it up? )
 DrCaleb CKA Moderator Posts: 37158 Posted: Mon Jul 30, 2018 8:32 am   Also, at my last Ophthalmologists appointment, my eyesight was 20/10 without my glasses, and 20/8 with.
 BartSimpson CKA Moderator   Posts: 65450 Posted: Mon Jul 30, 2018 8:38 am   A rod can also be a chain if you're a surveyor.
 BartSimpson CKA Moderator   Posts: 65450 Posted: Mon Jul 30, 2018 8:40 am   DrCaleb wrote:Also, at my last Ophthalmologists appointment, my eyesight was 20/10 without my glasses, and 20/8 with. Good for you! After I fully retired from the last career I traded my Coke-bottle-bottom glasses for Lasik and came out with 20/20 and 20/15.
 DrCaleb CKA Moderator Posts: 37158 Posted: Mon Jul 30, 2018 8:48 am   BartSimpson wrote:DrCaleb wrote:Also, at my last Ophthalmologists appointment, my eyesight was 20/10 without my glasses, and 20/8 with. Good for you! After I fully retired from the last career I traded my Coke-bottle-bottom glasses for Lasik and came out with 20/20 and 20/15. My prescription is very mild, less than .75 near sighted. I have to take them off to read the cell phone though. Aging sucks. Not strong enough for Lasik, and I have pretty good night vision so I wouldn't want to mess that up with Lasik. (one of the side effects, I understand)
 BartSimpson CKA Moderator   Posts: 65450 Posted: Mon Jul 30, 2018 8:59 am   Oh, yeah. My night vision is completely gone. Between Lasik and laser surgeries for detached retina it's so bad that I won't drive at night anymore.
 Page 1 of 1 [ 9 posts ]

#### Who is online

Users browsing this forum: No registered users and 2 guests

All logos and trademarks in this site are property of their respective owner.