Pengaruh Intensitas Spektrum Cahaya Warna Merah Dan Hijau Terhadap Perkecambahan Dan Fotosintesis Kacang Hijau ( Vigna Radiata L.)

Abstract

In this research, we analyz the effect of the intensity of the light spectrum on the color of red and green on germination and photosynthesis of green beans (Vigna radiata L.). The purpose of our research is to know the most effective wavelength for photosynthesis and comparison of effect of red and green light spectrum on germination. First, tools and materials to be prepared are cardboard, plastic cup, cutter, scissors, ruler, green bean seeds, double tape, red mica, green mica, cotton, and water. Second , create a research framework. Third, analysis of data obtained from observation of root lenght size, number of leaves, stem diameter and height of plant. The data indicate that the germination in the red color spectrum is faster than in the green color spectrum because the red color spectrum has the most effective wavelength for chlorophyll to perform photosynthesis and growth than the green color spectrum.

An Analysis of Prospective Science Teacher Students’ Misconceptions on Photosynthesis and Plant Respiration

“…The correct concept in the process of photosynthesis still requires light even though it is not in the form of sunlight, with the help of visible light that comes from the light of lamp photosynthesis will continue, in condition the existing energy must be able to meet the energy needs needed by plants to carry out photosynthesis, where blue light with the waves lenght (470 -500 nm) and red (650 -760 nm) that can be used for photosynthesis. Red light is light that is effective in photosynthesis and growth (Hasanah et al, 2018;Naomi et al, 2018). For the concept of the dark reaction, photosynthesis does not mean that photosynthesis takes place in the dark, but is a fixation reaction or CO2 binding using energy in the form of ATP and NADPH derived from the light reaction (Johnson, 2016;Suyatman, 2020).…”

Prototipe Pengaman Kebakaran Rumah Menggunakan Thermal Camera

“…Cahaya merupakan energi berbentuk gelombang dan membantu manusia untuk dapat melihat. Visible light spectrum adalah spektrum radiasi elektromagnetik yang mampu merangsang mata manusia sehingga dapat dilihat [4]. Spektrum cahaya hanyalah sebagian kecil spektrum radiasi gelombang elektromagnetik.…”

Pemanfaatan Solar Cell Untuk Penggunaan Hidroponik (Deep Flow Technique) Menggunakan Led Strip Sebagai Pencahayaan Terhadap Pertumbuhan Tanaman Kangkung

“…Cahaya tampak yaitu cahaya yang sensitif pada mata kita jatuh pada kisaran 400nm -750nm. Kisaran ini dikenal sebagai spektrum tampak, dan didalamnya terdapat warna ungu sampai merah [5].…”