lasts

If you ask 50 different people how long the effects of cannabis last, you're likely to get 50 different answers. This can be a problem for figuring out how long a patient using the drug for medical purposes is going to remain impaired.A meta-analysis of 80 papers published in 2021 narrowed down this timeframe. Depending on factors such as how the cannabis is consumed and how strong it is, the user can remain impaired for between three and 10 hours, scientists say.This information can help inform advisory information…

A semiconductor made from indium gallium arsenide has just set a duration record for a seemingly impossible material that repeats itself through time.Lasting at least 40 minutes, the period of oscillations sustained by an experiment led by researchers from TU Dortmund University in Germany blew everything else in its class out of the water, setting a new benchmark in a field where researchers have struggled to push the phenomenon past a handful of milliseconds.The 'tick-tock' of this itty-bitty clock took the form of…

Samsung Galaxy S24 Ultra battery test resultsModelsRuntime (Hrs)Samsung Galaxy S24 Ultra11:00iPhone 15 Pro Max10:20Google Pixel 8 Pro10:00Samsung Galaxy S23 Ultra08:10In this test conducted by YouTuber XEETCHARGE, we see various long and short-form videos, X (app), games, video recording through default camera apps, and synthetic benchmark apps like 3DMark run on all 4 phones. At about 8 hours and 10 minutes mark, the Samsung Galaxy S23 Ultra (with a 5,000mAh battery) powered off the first. It thus gets the last…

Inching forward bumper to bumper on a highway when you’re on the way to an appointment, or worse, the airport, is enough to spike anyone’s blood pressure (BP). But researchers have found that a BP surge occurs independent of external stressors, and it could be due to the poor air flowing into the car from surrounding traffic.The University of Washington (UW) researchers undertook a randomized crossover trial and were surprised to see that sitting in traffic and breathing unfiltered air was linked to a 4.5 mm Hg surge in…

Graco A good car seat will grow with your child, reducing the amount times you have to re-purchase and swap out for a new model. How, you ask? Well, Graco’s 4EVER DLX 4-in-1 car seat is the ideal example. It offers up to ten years of use, with seamless transformations between rear-facing harness, forward-facing harness, high back belt positioned, and backless belt positioned booster modes. For Black Friday — and really, this should be featured in the best Black Friday deals — this exact car seat is on sale for 25%…

Do you know what's better than getting a smart plug cheap? Getting two of them, and right now you can do exactly that as part of the annual Amazon Prime Day extravaganza.Amazon is now selling a pair of meross smart plugs, complete with HomeKit compatibility, for just $18.99. You don't need to jump through hoops to get that price either which means there are no discount codes or coupons here. But you do need to keep in mind that this price is a limited-time affair — Prime Day isn't going to be around forever.HomeKit smart…

YOU CAN USE most nice speakers on your patio— if you have outlets in reach—but can you trust them around day-drinking parents or sticky-fingered children who might bump them into a pool or sandbox? Rest easier with a portable Bluetooth speaker designed to survive water, sand and dirt. In the past, sound quality and portability were often mutually exclusive. More recently, manufacturers have found ways to outfit still-totable shapes with beefier sonic components. Here, five that are sealed well enough against…

After a COVID-19 infection, whether it's a first, second, or even a third, many of us wonder how long we might be protected against a reinfection, and whether we'll be susceptible to new variants.Also, if we do catch COVID-19 again, will the immunity we've acquired from this infection reduce the severity of the next one?A new study published in The Lancet set out to answer these questions, looking at the strength and duration of natural immunity by COVID-19 variant.The authors collected data from 65 studies across 19…

Masic’s paper is the latest in a string of investigations into Roman concrete. Last year, he published research with Marie Jackson, a researcher at the University of Utah, that examined the 70-foot-tall tomb of first-century Roman noblewoman Caecilia Metella on the Appian Way, an ancient Roman road that runs across Italy. Their investigation revealed that the particular formation of Roman concrete used in the tomb interacts with rainwater and groundwater, becoming more resilient over time.And in earlier work, Jackson and…

Apple’s upcoming Reality Pro mixed reality headset will sport an external battery pack the size of two of the company’s biggest and best iPhones, according to a new report.While Apple has reportedly worked on a version of the headset with a built-in battery pack that charges via a USB-C cable, it’s now thought that the model that will ship uses an external power source that Apple hopes will help keep the headset cool during use.However, that battery pack isn’t going to last a long time between charges — just two hours,…