an online Instagram web viewer
  • theskepticalchemist
    The Skeptical Chemist
    @theskepticalchemist

Images by theskepticalchemist

Pfizer is set to lose out on market exclusivity for Viagra (sildenafil citrate) come 2020, signaling the end of an era. We take a look back at the iconic drug that generated tens of billions of dollars in revenue over 20 years; what's in store for the little blue pill that never really harbored blockbuster dreams?
...
Link to article in bio, as always!
...
#viagra #sildenafil #FDA #drugs #medicine #science #research #drugdevelopment #chemistry #quimica #biochemistry #physics #biology  #TheSkepticalChemist
Pfizer is set to lose out on market exclusivity for Viagra (sildenafil citrate) come 2020, signaling the end of an era. We take a look back at the iconic drug that generated tens of billions of dollars in revenue over 20 years; what's in store for the little blue pill that never really harbored blockbuster dreams? ... Link to article in bio, as always! ... #viagra  #sildenafil  #FDA  #drugs  #medicine  #science  #research  #drugdevelopment  #chemistry  #quimica  #biochemistry  #physics  #biology  #TheSkepticalChemist 
Adding a little color to our feed with this liquid-liquid extraction - when was the last time you saw separation this clean?
... Solvent system: water/chloroform
#saynotoemulsions #toomuchsolvent #liquidliquid #chemistrylab #scienceexperiment #researchanddevelopment #stemeducation #chemistry #quimica #biochem #physics #biology #TheSkepticalChemist
It's been a hectic week; for best results, don't forget to slow things down every so often. ...
#selfcarefirst #mentalhealth #science #laboratory #chemicals #research #chemistry #biology #physics #TheSkepticalChemist
Congratulations to our giveaway WINNERS; big big thanks to everyone who participated/shared! You can now order the iron-on patches from our website! Or sign up to our quarterly newsletter for a chance to receive future goodies - we've made it easy with the link in our bio ;)
...
#giveaway #goodies #inthemail #science #labcoat #irononpatches #research #chemistry #physics #biology #biochem #TheSkepticalChemist #TheSkepticalStore
What's the difference between a substance's flash point and its autoignition temperature? And how is this related to the Ray Bradbury classic - Fahrenheit 451? Read about it in our latest post! (Link in bio)
...
On another note, it is with a heavy heart that we bring to your attention that the 200-year-old Rio national museum - Brazil's oldest scientific institution - was recently caught in a huge fire that consumed almost all of it's 20 million artifacts. Our thoughts are with the people of Brazil.
...
#fire #flashpoint #autoignition #Fahrenheit451 #RayBradbury #chemistry #physics #biology #science #education #research #TheSkepticalChemist
What's the difference between a substance's flash point and its autoignition temperature? And how is this related to the Ray Bradbury classic - Fahrenheit 451? Read about it in our latest post! (Link in bio) ... On another note, it is with a heavy heart that we bring to your attention that the 200-year-old Rio national museum - Brazil's oldest scientific institution - was recently caught in a huge fire that consumed almost all of it's 20 million artifacts. Our thoughts are with the people of Brazil. ... #fire  #flashpoint  #autoignition  #Fahrenheit451  #RayBradbury  #chemistry  #physics  #biology  #science  #education  #research  #TheSkepticalChemist 
Heat catalyzed nitration - watch the full vid on our YouTube channel! (Link in bio)
...
#chemicalreaction #catalyst #activationbarrier #scienceeducation #scicomm #research #experiment #chemistry #biochem #biology #physics #TheSkepticalChemist
UPDATE: Giveaway is now closed! We will draw the winners shortly. ...
Wanna add a little color to your labcoat, backpack or grandma's favorite tablecloth? We've got some iron-on patches with custom embroidery, and we're giving them away to SIX lucky winners!
...
How to enter:
1. Follow us!
2. Tag up to 3 friends in the comments below
3. That's it! Giveaway is open to everyone worldwide. Closing date for entries is 7 September 9pm SGT.
...
#giveawaytime #irononpatches #TSCrex #customdesign #science #chemistry #biology #physics #TheSkepticalChemist 
#stemeducation #womeninstem #stemsquad #sciencerules #scienceeducation #sciences #phdlife #unilife #studygram #studymotivation #studyspo #chemistrylab #labcoat #quimica #labselfie #lablife
UPDATE: Giveaway is now closed! We will draw the winners shortly. ... Wanna add a little color to your labcoat, backpack or grandma's favorite tablecloth? We've got some iron-on patches with custom embroidery, and we're giving them away to SIX lucky winners! ... How to enter: 1. Follow us! 2. Tag up to 3 friends in the comments below 3. That's it! Giveaway is open to everyone worldwide. Closing date for entries is 7 September 9pm SGT. ... #giveawaytime  #irononpatches  #TSCrex  #customdesign  #science  #chemistry  #biology  #physics  #TheSkepticalChemist  #stemeducation  #womeninstem  #stemsquad  #sciencerules  #scienceeducation  #sciences  #phdlife  #unilife  #studygram  #studymotivation  #studyspo  #chemistrylab  #labcoat  #quimica  #labselfie  #lablife 
An age-old question that has split many a lab apart (and Instagram, based on our recent poll)... Is coolant flow in a coil condenser supposed to be co-current (bottom to top) or counter-current (top to bottom)?
............
It turns out that there actually is a correct answer for this, hidden in a calculation called the 'log mean temperature difference' which is a measure of the heat exchange ability of a system. If the flow rate, coolant thermal properties and heat exchange surface area are kept the same (i.e. water in our coil condenser), the calculation shows that counter-current flow will be more efficient!
..............
This stems from the driving force of heat transfer being temperature gradients, which counter-current flow better provides. This is more apparent in systems with large temperature differences between the hot and cold feeds!
.............
Special thanks to @easy.e123456789 and @eatswithengineers for pointing us in the right direction (counter current btw)
.............
#science #sciencerules #scienceeducation #chemistrylab #heatexchange #chemistryproblems #engineerproblems #stemeducation #biochemistry #physics #engineering #TheSkepticalChemist
An age-old question that has split many a lab apart (and Instagram, based on our recent poll)... Is coolant flow in a coil condenser supposed to be co-current (bottom to top) or counter-current (top to bottom)? ............ It turns out that there actually is a correct answer for this, hidden in a calculation called the 'log mean temperature difference' which is a measure of the heat exchange ability of a system. If the flow rate, coolant thermal properties and heat exchange surface area are kept the same (i.e. water in our coil condenser), the calculation shows that counter-current flow will be more efficient! .............. This stems from the driving force of heat transfer being temperature gradients, which counter-current flow better provides. This is more apparent in systems with large temperature differences between the hot and cold feeds! ............. Special thanks to @easy.e123456789 and @eatswithengineers for pointing us in the right direction (counter current btw) ............. #science  #sciencerules  #scienceeducation  #chemistrylab  #heatexchange  #chemistryproblems  #engineerproblems  #stemeducation  #biochemistry  #physics  #engineering  #TheSkepticalChemist 
Beautiful crystals of... lactose! Yup the very same lactose in your milk that's really not sweet enough to be called a sugar but is still considered one πŸ€·πŸ»β€β™‚οΈ
...
Magnification 800x
...
#microscopy #lactose #crystals #sugar #science #research #chemistry #physics #biology #TheSkepticalChemist
It's been a long day, time for a break! Hope everyone is having a great day πŸ˜‰

#cobalt #blue #science #research #chemistry #biology #physics #sciencerules #scienceeducation #TheSkepticalChemist
Are 'therapeutic' essential oils effective? Or even safe? Read about the chemistry behind them in our latest article! (Link in bio)
...
#aromatherapy #essentialoils #danger #science #research #chemistry #biology #physics #skeptical #education #TheSkepticalChemist
It's a wrap! Big thanks to everyone who stopped by to say hello/watch us set stuff on fire/buy some glassware. Till next time! #carouselland ...
The Skeptical Team
...
#carouselland2018 #laboratory #glassware #beakers #flasks #science #research #biology #chemistry #physics #TheSkepticalChemist
For our friends in Singapore - @theskepticalstore will be at Marina Bay Sands this weekend as part of Carouselland. Come check out some science demonstrations and maybe leave with a shiny new beaker or three!
...
Oh, we'll also be giving away free stuff! Who doesn't like free stuff?
...
#carousell #carouselland #carouselland2018 #marinabaysands #singapore #funforthewholefamily #chemistry #biology #physics #science #TheSkepticalChemist
Orange -> Green -> Red -> Orange! Find out why indicator dyes and some transition metals have such intense colors but many organic small molecules tend to be white powders - in our latest post (link in bio)

#pH #indicator #chemistry #physics #biology #research #science #education #STEM #TheSkepticalChemist
I've got a lovely bunch of round-bottomed flasks, there they are all standing in a row...
.....
#ivegotalovelybunchofcoconuts #shiny #glassware #science #research #STEM #sciencerules #chemistry #biology #physics #TheSkepticalChemist
It gives me great pleasure to share with everyone... just how neon pink this solution is!
...
#pinkpinkpink #fluorescence #science #sciencerules #chemistry #biology #physics #stemeducation #TheSkepticalChemist
Cultured Vulpes vulpes - when a chemist finds a microscope unattended πŸ€¦πŸ»β€β™‚οΈ
...
#microscopy #microbiology #getbacktowork #science #scienceeducation #biology #biochem #chemistry #physics #research #TheSkepticalChemist