Durban, South Africa. Are these different colors due to the Umgeni river or the difference in temperature that affects plankton?

---

• Durban, South Africa. Are these different colors due to the Umgeni river or the difference in temperature that affects plankton?
• Could you use jet engine with, ramjet and than sramjet in series?
• How is a fighter jet engine different from a commercial jet engine?
• Why does salt increase rusting in a metal when it doesnt take part in the reaction. Is it a catalyst? If so how?
• Can we use nuclear weapons for good? Elon Musk said we can use them to melt Mars's ice caps. Are there any other positive uses?
• I've been fascinated by ball lightning for a long time. Has a reasonable theory emerged as to what causes it or is it still a mystery?
• Does the heat released in a chemical reaction affect the rate of the reaction?
• Is There a Relationship Between Standard Candle Stars and Stars on the Main Sequence of the Hertzsprung-Russell Diagram?
• Physicists sometimes talk about symmetry or "supersymmetry", but they seem to use it in a different way than in normal conversation. What does it mean in this context?
• What's actually going on in double-jointed people?
• Where is the flaw in my reasoning?
• What happened to Apollo 16 Lunar Module?
• Why can insects survive so long after receiving wounds that would instantly kill a human or other animal?
• When you are in a coma, do you go through sleep stages like REM or deep sleep?
• The bennu asteroid has a 1 in 2,700 chance of striking Earth on September 25, 2135. How are odds of an asteroid impact calculated? How are they adjusted over time? What don't we know that makes them measured by chance?
• How can we tell the make-up of exo-planets from light alone?
• How accurate is our measurement of great distances in space?
• Approx what percentage of the Universe is visible in the famous “Pale Blue Dot” photo?
• How did umbilical cords work before modern surgery, lets say the stoneage? Did they just fall off? Did humans just have pieces of gut dangling for a while?

Durban, South Africa. Are these different colors due to the Umgeni river or the difference in temperature that affects plankton? Posted: 18 Mar 2018 06:13 AM PDT https://i.pinimg.com/originals/68/cb/d4/68cbd4ef6dfe679f329cb1bf38b82a8c.jpg Couldn't find much info, maybe when they release the dam it carries more sediment because in the pictures I found the river is not so brown. submitted by /u/JohnnyFriendzone [link] [comments]

Could you use jet engine with, ramjet and than sramjet in series? Posted: 18 Mar 2018 04:38 AM PDT Consider that jet engine would be at the front and would have turbine cappable of reducing speed bellow mach 1 and keeping temperature in save level. submitted by /u/davcrt [link] [comments]

How is a fighter jet engine different from a commercial jet engine? Posted: 18 Mar 2018 06:03 AM PDT submitted by /u/Rpn0708 [link] [comments]

Why does salt increase rusting in a metal when it doesnt take part in the reaction. Is it a catalyst? If so how? Posted: 17 Mar 2018 07:01 PM PDT submitted by /u/fit_n_fine [link] [comments]

Can we use nuclear weapons for good? Elon Musk said we can use them to melt Mars's ice caps. Are there any other positive uses? Posted: 18 Mar 2018 05:23 AM PDT submitted by /u/KoKauH [link] [comments]

I've been fascinated by ball lightning for a long time. Has a reasonable theory emerged as to what causes it or is it still a mystery? Posted: 17 Mar 2018 05:14 PM PDT submitted by /u/Lursmani1 [link] [comments]

Does the heat released in a chemical reaction affect the rate of the reaction? Posted: 17 Mar 2018 07:30 PM PDT Every single reaction is either exothermic or endothermic and the temperature the reaction happens in affects the rate constant k and therefore the equilibrium of the reaction, so does, for example the heat released from an endothermic reaction affect the rate constant of that reaction, increasing the rate? this would mean that any calculated rate constants and equilibrium constants are only correct for a very short period time would it? Or is the heat released somehow accounted for in the rate constant? submitted by /u/mlop098 [link] [comments]

Is There a Relationship Between Standard Candle Stars and Stars on the Main Sequence of the Hertzsprung-Russell Diagram? Posted: 18 Mar 2018 06:01 AM PDT submitted by /u/thewildriven [link] [comments]

Physicists sometimes talk about symmetry or "supersymmetry", but they seem to use it in a different way than in normal conversation. What does it mean in this context? Posted: 17 Mar 2018 02:21 PM PDT submitted by /u/Paulonium1 [link] [comments]

What's actually going on in double-jointed people? Posted: 17 Mar 2018 11:17 AM PDT submitted by /u/phatfingerpat [link] [comments]

Where is the flaw in my reasoning? Posted: 18 Mar 2018 02:52 AM PDT This page poses a question: If it takes 5 machines 5 minutes to make 5 widgets, how long would it take 100 machines to make 100 widgets? My solution: If it takes 5 machines 5 minutes to make 5 widgets then 5 machines produce widgets at a rate of 1 widget/min. That means 1 machine produces widgets at a rate of 0.2 widgets/min. So 100 machines would make 50 widgets a minute. Therefore, it would take 100 machines 2 minutes to make 100 widgets. But the page suggests that the answer is 5 minutes. Where is the flaw in my reasoning? submitted by /u/foxneZz [link] [comments]

What happened to Apollo 16 Lunar Module? Posted: 17 Mar 2018 05:06 PM PDT After the ascent, it was intended to crash on the Moon. But I've read it did stay on orbit for over a year... How? and How it crashed if on the Moon there is no atmosphere to drag it down like on Earth?? submitted by /u/rBeowulf [link] [comments]

Why can insects survive so long after receiving wounds that would instantly kill a human or other animal? Posted: 17 Mar 2018 09:40 AM PDT submitted by /u/TheCockKnight [link] [comments]

When you are in a coma, do you go through sleep stages like REM or deep sleep? Posted: 17 Mar 2018 06:15 AM PDT My Dad is currently in hospital at the moment and is in a medically induced coma and I was wondering whether or not when people get put into a coma, induced or not, whether they go through the three stages and following from that. Do they dream? submitted by /u/ep123pearce [link] [comments]

The bennu asteroid has a 1 in 2,700 chance of striking Earth on September 25, 2135. How are odds of an asteroid impact calculated? How are they adjusted over time? What don't we know that makes them measured by chance? Posted: 17 Mar 2018 08:52 AM PDT I keep seeing articles about the bennu asteroid having a 1 in 2,700 chance of striking Earth on September 25, 2135. I'm curious about what factors into how these chances are progressively changed over time. submitted by /u/eastarcadia [link] [comments]

How can we tell the make-up of exo-planets from light alone? Posted: 17 Mar 2018 01:45 PM PDT Was watching a YouTube video the other day of cool planets (i.e planet made of diamond etc) Now from my understanding (and I may have this completely wrong) is the only way we can 'see' exo-planets is when they pass infront of the star. So how can we, from just the shadow predict the make up of these planets? Is there other tests I do not know about or do we just know how light 'passes-by' these planets? TIA submitted by /u/kingkornish [link] [comments]

How accurate is our measurement of great distances in space? Posted: 17 Mar 2018 05:02 PM PDT This is a two part question: Given that the Earth orbits the Sun on an ellipse, does the Astronomical Unit change on any given day when trying to determine the distance of celestial bodies? If parallax is only effective for objects within a certain distance, how do we measure the distance of bodies that are really far away? Thank you! submitted by /u/Jak03e [link] [comments]

Approx what percentage of the Universe is visible in the famous “Pale Blue Dot” photo? Posted: 17 Mar 2018 06:44 PM PDT I understand this photo is an astronomically small portion of the universe but I was wondering if there is a rough estimate as to what fraction of a percent of the universe it shows? Trying to really wrap a friends head around how small earth is in the universe. submitted by /u/chudleyjustin [link] [comments]

How did umbilical cords work before modern surgery, lets say the stoneage? Did they just fall off? Did humans just have pieces of gut dangling for a while? Posted: 17 Mar 2018 09:42 AM PDT Like bruh what did their belly buttons look like submitted by /u/fabbez98 [link] [comments]

You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now.	Email delivery powered by Google
Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States