Science

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schonovic

electricity

is there anyone out there savvy enough in physics to ponder my idea, it is of an object i call an inverse element, the opposite of a space heater;the inverse element would be a band of material that...

crazzyfrogg3

invisible light

if a spacecrafter were 900 million meters from earth, how long would it take to send a radio sihnal from earth to the spacecraft?

nicolab6

Does lava smell?

Can anyone resolve a long standing family argument? Does lava smell? Thanks Nicky

flobadob

What is dark matter, and is it proven to exist?

Could someone explain in lay terms what dark matter is and also is there any evidence of dark matter's existence or is it a theory?

two-penneth

Conservation of momentum - problem?

Can't remember the formula, but it does occur to me that, for instance, a bee hitting a train coming in the opposite direction has at some point to change direction as it is carried with the train. if...

China Doll

Fun Science Question (I think!)

Evening All, It's been a while since I graced Science with my ramblings so hopefully you've all had suitable time to recover! I was out for dinner with a friend this evening and he was telling me...

sfsorrow

total combinatons

Using the numbers 0-9 in a 4 figure number what is the total amount of combinations you can have,i.e pin number for a debit card,we was discussing this at work and it made me think that surely there...

lianching

Science

Watermelon sink or float?

schonovic

electricity

icebread

looking out to sea

how far can the eye see when looking out at the sea

devayaani

ocean tides and waves

Is there any relationship between the ocean tides and the ocean waves? Are they two unconnected phenomena? Thank you.

lianching

Science

Durian float or Sink?

devayaani

isotopes

Thank you for clarifying the doubts . I know chemical elements have naturally occurring isotopes. Is there any element (atomic number 1 to 92) that exists in nature but does not have any isotope ?...

claymore

The theory of physics

Are the laws of physics set in stone like when god gave moses the ten commandments.?..."moses ,here are the ten commandments, that s all there is and there non negotiable" .Isn`t it...