Paul Fraser Collectibles’ Top 10 strangest-ever collectibles
#4 Apollo 11 navigational chart - $218,000
This piece is a historically important as it is unique, having been used by Apollo 11 astronauts Neil Armstrong and Buzz Aldrin to determine their exact position on the lunar surface, just after their historic 1969 moonlanding.
It appeared at Bonhams’ Space Sale in New York in 2009 and, as one of the few flight devices returned from the lunar surface to be available on the market, was a major highlight in the sale. In the end, it sold for $218,000.
“This star chart was the single most critical navigational device we used while on the Moon,” wrote Aldrin in an accompanying letter. You can’t beat provenance like that.
Submitted by Alex Manford
![fyeahuniverse:
image by Flickr/Cyberchemist
The Tollen’s Reagent is used to determine whether a solution contains an aldehyde or a ketone.
Dilute sodium hydroxide is added to aqueous silver nitrate, this gives silver oxide, sodium nitrate and water.
2 AgNO3 (aq) + 2 NaOH (aq) → Ag2O (s) + 2 NaNO3 (aq) + H2O (l)
Then, aqueous ammonia is added to the solution until it goes clear. This is due to the now silver ions existing as [Ag(NH3)2]+ complexes.
Ag2O (s) + 4 NH3 (aq) + 2 NaNO3 (aq) + H2O (l) → 2 Ag(NH3)2NO3(aq) + 2 NaOH (aq)
The silver precipitates out onto the inside of the container, giving the notable silver mirror as seen above.](http://25.media.tumblr.com/tumblr_lxxje8HrGH1rn3wcfo1_400.jpg)
image by Flickr/Cyberchemist
The Tollen’s Reagent is used to determine whether a solution contains an aldehyde or a ketone.
Dilute sodium hydroxide is added to aqueous silver nitrate, this gives silver oxide, sodium nitrate and water.
2 AgNO3 (aq) + 2 NaOH (aq) → Ag2O (s) + 2 NaNO3 (aq) + H2O (l)
Then, aqueous ammonia is added to the solution until it goes clear. This is due to the now silver ions existing as [Ag(NH3)2]+ complexes.
Ag2O (s) + 4 NH3 (aq) + 2 NaNO3 (aq) + H2O (l) → 2 Ag(NH3)2NO3(aq) + 2 NaOH (aq)
The silver precipitates out onto the inside of the container, giving the notable silver mirror as seen above.
(via laboratoryequipment)
Through crimson stars and silent stars and tumbling nebulas like oceans set on fire, through empires of glass and civilizations of pure thought and a whole, terrible, wonderful universe of impossibilities.
(Source: charlottelightanddark, via buvonsbien)
In his jar at R’lyeh
Dead pickle lies dreaming
(Source: randominternet)
What scientists say in research papers vs. What they actually mean
Ok this is funny:
“In my experience” -> Once
“In case after case” -> Twice
“In a series of cases” -> Three times
“Typical results are shown”
Yeeees…
