أي رشة مدتها ربع ثانية

https://www.wikihow.com/Measure-Olive-Oil-Spray
Typical serving sizes for olive oil spray only last 1/4 of a second. However, spraying olive oil for 1/4 of a second is super hard, and you’ll probably spray it for at least 1 second. Take note of how many times you spray your olive oil, then use that number to calculate how many calories you are eating.[7]
For example, if you sprayed your olive oil for 3 seconds and it has 2.4 calories in each 1/4 of a second spray, add up the amount of 1/4 sprays are in each second (4). Then, multiply 3 seconds x 4 to get 12. Finally, multiply 12 x 2.4 to get 28.8 calories in a 3 second spray.
Some fitness tracker apps and websites will do this calculation for you, but it’s always good to double check yourself.
If you are calculating total fat, take your total number of 1/4 second sprays (in this case 12) and multiply it by 0.25 to get 3 grams of fat for a 3 second spray of olive oil.