/u/eterevsky's posts in /r/askscience

Year:

Only show posts with narrations

I am sitting in a boat in a lake of superfluid helium. Can I use oars to propel myself? What about propeller? Also, am I in danger of sinking?

34 upvotes

Mark as read: Add to a list

Why is Venus atmosphere so much denser than the atmosphere of Mars?

11 upvotes

Mark as read: Add to a list

Why is the capacity of batteries measured in mAh, and not in mWh?

2 upvotes

Mark as read: Add to a list

In the past few decades have different dialects and languages grown closer to each other due to TV, Internet and global culture?

1 upvotes

Mark as read: Add to a list

Can a tidally locked planet have atmosphere? How will it behave?

1 upvotes

Mark as read: Add to a list

There were two studies recently of neurogenesis in adults with wildly contradictory conlusions: one saying that adult neurogenesis is extremely low to non-existant, another that adults grow as many hippocampal neurons as young people. Which one should I believe?

1 upvotes

Mark as read: Add to a list

Why do astronauts need a spacesuite, while a climber on top of Everest can do with an oxygen mask, even though the air pressure on Everest (1/3 atm) is closer to vacuum than to sea-level pressure?

1 upvotes

Mark as read: Add to a list

If I am washed out into the ocean by a tsunami, what are my chances to survive and swim to shore if I am an ok swimmer and the water is not particularly cold?

1 upvotes

Mark as read: Add to a list

CDC director Rochelle Walensky recently tweeted that "Masks can help reduce your chance of #COVID19 infection by more than 80%." Is there any evidence to support this?

1 upvotes

Mark as read: Add to a list

Can any animals perceive beauty?

1 upvotes

Mark as read: Add to a list

Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
I am sitting in a boat in a lake of superfluid helium. Can I use oars to propel myself? What about propeller? Also, am I in danger of sinking?	34
Why is Venus atmosphere so much denser than the atmosphere of Mars?	11
Why is the capacity of batteries measured in mAh, and not in mWh?	2
In the past few decades have different dialects and languages grown closer to each other due to TV, Internet and global culture?	1
Can a tidally locked planet have atmosphere? How will it behave?	1
There were two studies recently of neurogenesis in adults with wildly contradictory conlusions: one saying that adult neurogenesis is extremely low to non-existant, another that adults grow as many hippocampal neurons as young people. Which one should I believe?	1
Why do astronauts need a spacesuite, while a climber on top of Everest can do with an oxygen mask, even though the air pressure on Everest (1/3 atm) is closer to vacuum than to sea-level pressure?	1
If I am washed out into the ocean by a tsunami, what are my chances to survive and swim to shore if I am an ok swimmer and the water is not particularly cold?	1
CDC director Rochelle Walensky recently tweeted that "Masks can help reduce your chance of #COVID19 infection by more than 80%." Is there any evidence to support this?	1
Can any animals perceive beauty?	1