1

General Science / Re: Do You Dream in Monochrome or Colour?

« on: 03/01/2023 15:06:31 »

I have to say, I never once thought of this one, in fact it looks like colours to me, but I'm not sure, something new and exciting to me!
I can't wait to fall asleep to find out.

2

That CAN'T be true! / Re: Are home water filtration systems a waste of money?

« on: 03/01/2023 12:46:03 »

To me the water filter makes no sense, because I live on land where I have permanently good water from the ground, and if the water really is bad, the filter is what's going to help you survive so it's definitely not a waste of money.

3

Just Chat! / Re: Book travel package

« on: 03/01/2023 12:42:30 »

We are best travel agency in India and tour operator offering travel services

We’ll help you on your way out of this forum
Bye

I'm glad it works that way, but do you guys have somewhere here to say 'a list of useful sources' where you can find what you need by keyword? This seems like a good idea to me.
(I do agree that this kind of advertising is not acceptable) but make a page where there would be more sources that would go through moderation.

4

Technology / Re: How fast do earth temperatures change in the surface layer?

« on: 03/01/2023 12:37:51 »

      15 m (  49') 5.69 °C
      20 m (  66') 5.65 °C

Going slightly "backwards" between 15m & 20m is a bit odd?

I wondered about that as well.  Seems strange.  Since I had to enter the depth each time I may have mistakenly tweaked either the gps coordinates or the time of day by mistake.

I feel the same.

5

General Science / Re: How would you explain or define calculus in a sentence or two?

« on: 03/01/2023 12:36:31 »

Perhaps impossible, but give it your best shot, please.

I remember my college professor saying it was practically impossible.
Besides I don't hesitate to give you this source https://supremestudy.com/ to try to reach out to these guys, because they deal with everything that has to do with college and school, most likely they could give you an answer to this question. Because I have used them several times and I have always been satisfied with what they have done, in any case it is possible to correct what you don't like.
This is all I know 

6

General Science / Re: How fast does a magnet attract ?..and other magnet questions !

« on: 03/01/2023 12:34:54 »

The magnetic field starts propagating exactly the instant you switch on the power for the first time.

The magnetic field is proportional to the current, and the rate of current growth is limited by the inductance:
di/dt = V/L in the absence of any resistance,
or in a real solenoid with resistance:
i = V/R(1-e^-tR/L)

Isn't there a computer that would do this independently? Or am I missing something.

7

The Environment / Re: Is global warming man-made?

« on: 03/01/2023 12:29:52 »

8 billion humans 3 to 4 billion cars driven daily over a hundred thousand flights a day industry pumping it out.We also have overrun every habitat.I think we can say for sure we are responsible and blind to our imprint.We are going to hit peak population very soon  things will only get worse the more humans there are.Its amazing how many people have blinders on  8 billion humans  and growing some how have no effect on the environment.

Actually I would say that everything is under control, the earth could hold much higher capacity.

8

Science Experiments / Re: Investigation on diffraction of light

« on: 03/01/2023 12:25:16 »

Investigation on Diffraction of Light 21 : Long Shot Diffraction
Experiment on diffraction of light with long distance between the obstacle and the screen to show the difference of interference pattern between single slit and thin wire diffraction.

Something new and interesting for me, if you still find this kind of video, please let me know.

9

Science Experiments / Re: How to build DIY lasers?

« on: 03/01/2023 12:23:41 »

I just found a great Youtube channel named Les' Lab, explaining how to build DIY laser. I'd like to share the videos here. I hope you find them useful.

Nitrogen Laser tear down, power up, and Home Made Dye Laser Demonstration

I have just such a parata in the garage, I'm going to try to make this one.
Thanks for sharing!

10

New Theories / Re: An essay in futility, too long to read :)

« on: 10/12/2022 10:33:43 »

Seen higher figures too, especially if you own a house.

My house is on the ground and now I really have to say it's going to be hard to get through this winter, why don't the politicians do something about it? Besides being a student I use https://paperell.net/buy-research-papers to buy research paper because I don't have time to do this independently, because I'm a student who has no money (parents don't do this) and I have to work and parallel to do my studies, and this is getting very hard, I'm glad that at least university can be avoided by homework done by these guys.