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Chemistry
After all, black plastic kitchen utensils aren’t that toxic: But you should still throw them away, says group
Credit: Pixabay/CC0 Public Domain A recent study that recommended immediate disposal of toxic chemicals in black plastic products contained mathematical errors that greatly exaggerated the risk of contamination, but its authors stand by their conclusions. , warns against the use of such products. Experts from the non-profit Toxic Free Future, published in the peer-reviewed journal Chemosphere, found that flame retardants…
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Physics
Observation of gain-induced group delay between multiphoton pulses generated in spontaneous downconversion sources
Deformation of the shape of a photon pair as the spontaneous parametric downconversion interaction strength increases (from left to right). Credit: Thekkadath et al. Spontaneous parametric downconversion (SPDC) and spontaneous four-wave mixing are powerful nonlinear optical processes that can generate multiphoton light beams with unique quantum properties. These processes can be exploited to create a variety of quantum technologies, such…
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