Luminance

Alright thank you lots! Yeap I understand the background water isn't actually smoother, thus the term "appears" is applied. =)

Initially, I thought it was a cult but guessed I was wrong. It's merely a flat space for flat trolling.

Hi J.C.MacSwell Thank you for the further elaboration. My understanding of your explanation is that in the background, the boundary layer of air, which moves at 3 to 5 knots, is turbulent enough to break the surface tension on the water to a certain degree, such that it appears "lighter and smoother", while in the foreground, where the wind speed is 1 to 3 knots, the boundary layer of water is laminar as the water surface tension remains intact due to weaker wind energy. The difference in wind speeds between the two regions creates a wind shear where the air in the background rises up and over the air in the foreground. Additionally, similar effects can be noted in hurricane force conditions, where they can be read when a gust of upper airflow breaks the water surface tension and fans out pushing against the "relatively"(reason for quotation marks?) slower surface air that had established a more laminar boundary layer, even at those greater wind speeds and larger wave conditions. Is my understanding right? Also, does boundary layer refer to the surface of the water or basically the layer of air above the surface of the water? Or perhaps both, depending on specification?

Haha I see. That was interesting. Our ever changing lifestyles are degrading the sacredness of water indeed. On my part, I actually thought along the line of using our technology to ensure water sustainability, such as installing push button sink faucets instead of the usual and common household faucets where the water can run off the tap forever. Your clear insight in this matter has certainly helped me! =) Thank you.

Hi there. I was actually referring "litter" to basically anything thrown into a water body that affects the quality of the water. I think your mentioned examples concern a group effort, a community-based effort. However, what can we personally do as an individual? Thank you for your reply. Regards.

I wouldn't rule out coincidence in this case. I'd tried doing something similar; 'planning' my dreams. It worked occasionally. I wasn't amazed because the dream wasn't totally what I wanted though similar. Something similar to share though. That is, I can force myself out of a dream easily. I can remember vividly once I was walking on the street in a dream and I intentionally ran towards a wall to get myself awake. I've to admit, though, that I already planned to do that while I was preparing to slip into my dream. It seems that if you try to "kill" yourself in a dream, you'd be able to wake out of your dream! Interesting for me. =)

Hi J.C.MacSwell Thank you for your reply. If I were to use this photograph to relate a science concept, would water surface tension and laminar flow or specular/diffusion reflecton of light be a more suitable candidate?

Honestly speaking, what can we personally do to help ensure water substainability, apart from the usual wasting less water and not polluting water bodies by dumping litter into them? As much as this is an assignment given, I too have interest in discussing on this topic. Seems interesting enough. I believe we can do a lot more to ensure water sustainability. Thoughts?

Hi CaptainPanic! Great to see you again! Didn't thought of the wind factor. Thanks for the enlightenment! =) EDIT: @Swansont: I can't remember but it was in the noon. On overexposure, I highly doubt so. I remember seeing this sight elsewhere during my journey. And not excluding this of course.

Took this photo for my assignment and the clear distinct "separation" shown in the midground got me thinking. What causes this to happen? The region of water in the background appears to be "lighter in colour" and smoother as opposed to the region of water in the foreground. Please kindly comment. Regards.

Hello CaptainPanic. Thank you for the comments! I'll elaborate more on my initial post. And with regards to the issue of erosion, wouldn't the vegetation near the shore protect it from being eroded? I mean I've learned in geography classes where vegetation anchor the soil firmly such that it prevents river banks from erosion. Moreover, the energy of the river flow shouldn't be really strong in a stream/lake/river if I remember correctly. However, the main point of the question is actually to know how the trees depend on the river for survival. Thank you for your reply. =)

Hello fellow 'forumites' of Science Forums! I've encountered a little biology question which I've failed to obtain information from Google so please kindly enlighten me. So... the thing is that I would like to know the relationship between a water body (rivers, lakes, reservoirs etc) and the trees growing near it. I've captured an image, primarily for the assignment I'm working on, but I can show a similar one which I've found using Google Image. Source: http://www.a2jlp.co..../capontree.html I suppose that the vegetation around the lake depend on the lake for water and there is actually an ecological cycle involved which I am still seeking an explanation for. EDIT: The main thing I'm trying to find out is how the trees growing near the water body depend on the water for survival. Does the water that the trees receive come primarily from the water body such that it allows the trees to survie? Or it just happens to grow near the water body and helps to prevent erosion/intercept rainwater? I think there're existing sites which can serve as references for my assignment but I can't seem to find any and your knowledge is definitely much needed here. It would be fun to engage in a discussion here Hope to see replies soon. Thank you =)