WOver here, I to write onlyusually to only write about subjects with which I am already familiar with. However, with this method, I might not discover the areas of English in which I still need improvement. Over here, I usually to only write about subjects with which I am already familiar with. However, with this method, I might not discover the areas of English in which I still need improvement.

Just added a few words to improve flow. Use connecting words (e.g. moreover, furthermore, likewise, however). It makes sentences flow with one another.

Therefore, I shall attempt to describe the following subject in a manner that is both precise and understandable. Therefore, I shall attempt to describe the following subject in a manner that is both precise and understandable.

Good good!

Although humans have always been aware of visible light and radiant heat, it was not until recently that scientists understood these two phenomena to be connected. Although humans have always been aware of visible light and radiant heat, it was not until recently that scientists understood these two phenomena to be connected.

Great use of although. Great flow from the previous sentence to the next one.

The human eye is capable of perceiving part of this spectrum because the retinae contain photoreceptors that are sensitive to wavelengths between 300 and 1,050 nm, or UV-B (ultraviolet-B) to NIR (near-infrared), that encompassinges all wavelengths of visible light wavelengths. The human eye is capable of perceiving part of this spectrum because the retinae contain photoreceptors that are sensitive to wavelengths between 300 and 1,050 nm, or UV-B (ultraviolet-B) to NIR (near-infrared) that encompasses all wavelengths of visible light.

You were grammatically correct and I think most English speakers would have understood you. This is just more natural

However, this sensitivity does not correspond directly to the range of wavelengths that can be visualizedseen. However, this sensitivity does not correspond directly to the range of wavelengths that can be seen.

The word "visualized" tends to only be used when picturing something in your mind.

Although we should theoretically be able to visualize some ultraviolet and infrared electromagnetic radiation, we cannot (under normal conditions). Although we should theoretically be able to visualize some ultraviolet and infrared electromagnetic radiation, we cannot under normal conditions.

I removed the parentheses because while the sentence functions just fine without under normal conditions, those three words do add emphasis to your topic and the point you are making overall so inclusion of them would necessitate absence of parentheses. You could also write this section as Although we should theoretically be able to visualize some ultraviolet and infrared electromagnetic radiation, we generally cannot under normal conditions. Although we should theoretically be able to visualize some ultraviolet and infrared electromagnetic radiation, under normal conditions we cannot. You can of course substitute we cannot with We're unable to

Although we should theoretically be able to visualizsee some ultraviolet and infrared electromagnetic radiation, we cannot (under normal conditions). Although we should theoretically be able to see some ultraviolet and infrared electromagnetic radiation, we cannot under normal conditions.

Again, I would recommend not using the word "visualize" here. I would also remove the parentheses, as they should be used to add clarifying or non-essential information. With the parentheses, the phrase "we cannot" is incomplete. To complete the thought, include the "under normal conditions" as part of the main sentence.

UV radiation is harmful to our eyes, just as it is to our skin. UV radiation is harmful to our eyes just as it is to our skin.

The addition of just makes this more natural. Again it adds emphasis to UV radiation's harmfulness

As a result, human eyes have evolved ocular lenses to filter out much of said radiation; were these mechanisms absent, our retinae would be exposed to wavelengths capable of causing damage. As a result, human eyes have evolved ocular lenses to filter out much of said radiation; were these mechanisms absent, our retinae would be exposed to wavelengths capable of causing damage.

Not a bad use of semicolon. I think many language resources would agree with your use here. There is another means to communicate this point that is also natural as well As a result, human eyes have evolved ocular lenses to filter out much of said radiation. Had it not been for the presence of these mechanics, our retinae would be exposed to wavelengths capable of causing damage.

As a result, human eyes have evolved ocular lenses to filter out much of said radiation; were these mechanisms absent, our retinae would be exposed to wavelengths capable of causing damage. As a result, human eyes have evolved ocular lenses to filter out much of said radiation; were these mechanisms absent, our retinae would be exposed to wavelengths capable of causing damage.

Amazing use of semi colon. I'm loving how easy it is to read about a complicated subject. Never been a physics person myself, but your prose makes in understandable.

IMeanwhile infrared radiation, meanwhile, can be detected in the form of heat but cannot be seen, as humans do not have the appropriate photoreceptors sufficiently sensitive to visualize infrared. Meanwhile infrared radiation can be detected in the form of heat but cannot be seen, as humans do not have the appropriate photoreceptors sufficiently sensitive to visualize infrared.

Alternatively you can leave out meanwhile

Infrared radiations, meanwhile, can be detected in the form of heat but cannot be seen, as humans do not have the appropriate photoreceptors sufficiently sensitive to visualize infrared. radiations Infrared radiations, meanwhile, can be detected in the form of heat but cannot be seen, as humans do not have the appropriate photoreceptors sufficiently sensitive to visualize infrared radiations

Infrared radiation, meanwhile, can be detected in the form of heat but cannot be seen, as humans do not have the appropriate photoreceptors that are sufficiently sensitive to visualize infrared. Infrared radiation, meanwhile, can be detected in the form of heat but cannot be seen, as humans do not have the appropriate photoreceptors that are sufficiently sensitive to visualize infrared.

While technically grammatically correct, the last part is a bit awkward. This can be solved by either adding clarification ("that are") or by just picking one descriptor (eg. "appropriate photoreceptors" or "sufficiently sensitive photoreceptors").

Even though our retinae are sensitive to some NIR light wavelengths, the resulting signals are insufficient to produce a visual perception of infrared. radiations Even though our retinae are sensitive to some NIR light wavelengths, the resulting signals are insufficient to produce a visual perception of infrared radiations